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300 torque build 85 Bronco

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BigBlue94
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Re: 300 torque build 85 Bronco

Post #101 by BigBlue94 » Fri Jan 11, 2019 9:10 am

I picked it up yesterday!

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Image

Got my sheet of specs at home, but main and rod bearing clearance is .0027 and .0029 respectively. He originally prepped the crank and set it in the mains to find it had only .001 clearance and wouldn't spin. Pulled it out and noticed the crankshaft was bent nearly .002". He straightened it and reground it.

My pushrod guideplates seem to set a couple of the pushrods awful close to the edge of their bore, but all the rocker tips appeared centered on quick glance.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #102 by BigBlue94 » Mon Jan 21, 2019 9:22 am

So I went to set my valve cover on the other day and it wasnt close to touching the head surface. I need approximately .400 to clear the rocker arm nuts. I've got a Marshall spacer coming to cure that. However it had me thinking because I know others have had much better clearance. I decided to check what pushrods were used. They are Smith bros 3/8 like I wanted, but they are 10.250" long! However, they all fit and spin like they are supposed to other than the couple under full spring pressure. So that leads me to thinking my rocker pedestals weren't milled down to the "normal" height. Guideplates were welded up at PMuller's specs. So if they are 1/4" higher than "normal", does that affect my geometry in an adverse way?

Just for reminders, I'm using an 85 head, arp rocker studs, harland sharp rollers, and a 74 valve cover. Schneider cam and lifters.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #103 by pmuller9 » Mon Jan 21, 2019 9:34 am

FWIW the pushrods on my 1985 head was 10.290" with BBC roller rockers and .100" longer Chevy valves.
Considering that I lost about .060" in height due to head and block decking it looks about right.

As long as the rocker roller tip pattern is centered in the tip of the valve stem tip everything is good.
Once the geometry is correct the rocker should be sitting low on the studs below the threaded section.

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Re: 300 torque build 85 Bronco

Post #104 by BigBlue94 » Mon Jan 21, 2019 10:12 am

Okay thanks Paul. I'll definitely check for proper roller to valvetip pattern.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #105 by pmuller9 » Mon Jan 21, 2019 5:00 pm

Meanwhile if you have two valve covers use one for an extension and make a high stock cover.
Image

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Re: 300 torque build 85 Bronco

Post #106 by 1986F150six » Tue Jan 22, 2019 8:26 am

That valve cover is "purdy"! :D

BigBlue94
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Re: 300 torque build 85 Bronco

Post #107 by BigBlue94 » Tue Jan 22, 2019 8:52 am

pmuller9 wrote:Meanwhile if you have two valve covers use one for an extension and make a high stock cover.
Image


I have a 74 and an 85 cover. The 85 has extra height on both ends. I'm contemplating chopping the 74 PBF section out and cutting the center out of the 85 cover and welding the PBF in place, at the higher height. This would be if I dont like how the 74 fits with those stacked gaskets I need to use with the spacer.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #108 by Mdixon300f100 » Tue Jan 22, 2019 1:05 pm

The PBF and efi valve covers have different dimensions, I recently ran into this same issue with my new cylinder head. The efi valve cover is narrower and I believe slightly shorter. If you look closely there’s a large radius in the PBF cover for bolt clearance, where the efi cover doesn’t.

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Re: 300 torque build 85 Bronco

Post #109 by BigBlue94 » Sat Jan 26, 2019 10:50 am

Mdixon300f100 wrote:The PBF and efi valve covers have different dimensions, I recently ran into this same issue with my new cylinder head. The efi valve cover is narrower and I believe slightly shorter. If you look closely there’s a large radius in the PBF cover for bolt clearance, where the efi cover doesn’t.


The 74 and 85 valve covers are the same height in the center. The 85 is raised on the ends, about the last 5" or so. I had considered welding the PBF center section into that 'valley' in the 85 cover.

My spacer came in today, and without gaskets, the 74 cover sits down 'flush' on the spacer. No clearance issues. I've got about $300 worth of stuff left to order, and it's time to get it put back in.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #110 by Mdixon300f100 » Sun Jan 27, 2019 7:49 am

BigBlue94 wrote:
Mdixon300f100 wrote:The PBF and efi valve covers have different dimensions, I recently ran into this same issue with my new cylinder head. The efi valve cover is narrower and I believe slightly shorter. If you look closely there’s a large radius in the PBF cover for bolt clearance, where the efi cover doesn’t.


The 74 and 85 valve covers are the same height in the center. The 85 is raised on the ends, about the last 5" or so. I had considered welding the PBF center section into that 'valley' in the 85 cover.

My spacer came in today, and without gaskets, the 74 cover sits down 'flush' on the spacer. No clearance issues. I've got about $300 worth of stuff left to order, and it's time to get it put back in.



You know I have an 85 head in my 80, and I just assumed it had a efi valve cover because of the raised ends. I think I have to go pull a valve cover and check dimensions now... :thanks:

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Re: 300 torque build 85 Bronco

Post #111 by BigBlue94 » Sun Jan 27, 2019 11:02 am

Mdixon300f100 wrote:You know I have an 85 head in my 80, and I just assumed it had a efi valve cover because of the raised ends. I think I have to go pull a valve cover and check dimensions now... :thanks:


I can't say my 'humped' valve cover is an original 85 part, but it came on my 85 with a reman engine. When setting next to the PBF 74 cover, the centers are basically the same height.

On a side note, I'm looking at mechanical fuel pumps. I dont want electric because of the noise from cheap ones and can't afford a good one. I'm looking at the Carter m60092. 7 psi and 35 gph. However it's only 1/8" npt ports, and I'd like -6AN, as that's what my current fuel system is. I can obviously continue to run adapters, but I'd rather not. I've seen threads about swapping pump arms. Are there certain fuel pump models that would work, or are all mechanical pumps a viable candidate to swap arms out?
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #112 by Mdixon300f100 » Sun Jan 27, 2019 9:02 pm

My understanding is the bolt pattern matches sbc fuel pumps, just the pump arm swap to make them work. The efi cover I recently picked up to make my PBF cover taller is the same height, it’s the width and length that’s smaller, about 3/16 in both directions. I’ll try and get a picture.

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Re: 300 torque build 85 Bronco

Post #113 by BigBlue94 » Mon Jan 28, 2019 2:06 pm

One pump I saw was for not only all the "modern" Ford sixes, as well as the 360 and 390fe.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #114 by BigBlue94 » Mon Feb 04, 2019 11:44 am

My box of parts finally showed up so I'm ready to get this puppy back in the bronco. I ended up getting the Carter m60092 fuel pump, and it's quite different looking than my original, but honestly looks much better made.

I also ended up making my own intake clamping washers out of brass on the lathe. 1" diameter, .25" thick and a hole to clear the 3/8s studs.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #115 by BigBlue94 » Wed Feb 06, 2019 5:43 pm

Got some work done this afternoon.

Got my manifold studs installed. Also had to make the little locating stud for the intake manifold on the lathe. The was a .312" pin, pressed in the head.
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Doing some mockup and test fitting
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I'm very pleased with how well the gray paint on the intake and the jet-hot coating match.
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I turned out these little clamps made of brass on the lathe. They dont fit a few of the lower rear studs so I'll use the factory clamps and some washers.
Image

Just had to see what it looked like!
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I got the motor mounts bolted on and installed the new Flowkooler waterpump. However, when I went to put the pulley on, it had a slight scrape on the waterpump. So I did what I know how to do. Chucked that pulley up in the lathe and gave her a trim!
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The shiney part is where I shaved about a 1/16" off, maybe a little more.
Image
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #116 by THE FRENCHTOWN FLYER » Wed Feb 06, 2019 7:50 pm

nice
Thanks for sharing.
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Re: 300 torque build 85 Bronco

Post #117 by 54-4x4 » Thu Feb 07, 2019 10:37 am

She sure looks good.

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Re: 300 torque build 85 Bronco

Post #118 by BigBlue94 » Mon Feb 18, 2019 10:27 am

Made some good progress in the last couple weekends. Got mounts built for my new shiney BeCool radiator and my power steering cooler mounted up and AN hoses made. Got the engine sitting in its permanent home too!

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Check out the differences in these two throwout bearings. I thought the new one was cheap... the old one is mostly plastic!

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Little bit too long... had to rotate 90° to get it in.

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However, as I was finagling the engine in, I noticed my rocker tips are NOT centered on the valve tips side to side. Front to back is perfect. I think this is due to my guideplates being too narrow. Would also explain why some pushrods are awfully close to the edge of their bores. Looks like I'll be pulling the rockers and grinding them guideplates out a bit.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #119 by pmuller9 » Mon Feb 18, 2019 10:36 am

Are you saying that the intake and exhaust rockers on a cylinder pair are both facing outward?
Can you post a picture of a rocker pair?

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Re: 300 torque build 85 Bronco

Post #120 by BigBlue94 » Mon Feb 18, 2019 10:46 am

pmuller9 wrote:Are you saying that the intake and exhaust rockers on a cylinder pair are both facing outward?
Can you take a picture of a rocker pair?


I can get a pic this evening.

If you look down at the rockers, the pair points slightly club footed. The roller tips on the rockers are slightly off the side of the valve tip and a bit of the valve tips are out the other side. Like the pushrods are too close together at the rocker ends.

I'm using the longer 300 si valves and my pushrods are about 10.250. I do not know how much was machined off the pedestals. I wonder if the 1.9xx or whatever I centered those guide plates on was not quite right for my application.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #121 by pmuller9 » Mon Feb 18, 2019 10:53 am

The rocker tip pairs can be towed in towards each other just a bit so they end up centered on the tip at full valve lift.
I will wait for a picture.

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Re: 300 torque build 85 Bronco

Post #122 by BigBlue94 » Mon Feb 18, 2019 11:04 am

I see. I'll get a couple, one where the valve is being opened.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #123 by BigBlue94 » Mon Feb 18, 2019 5:34 pm

Cylinders 1 and 3 respectively. All six are about the same.

Image

Image
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #124 by pmuller9 » Mon Feb 18, 2019 5:56 pm

Good catch!
I'm glad you spotted that.

If the center to center valve spacing is 1.906" and the rocker stud spacing is the same at just over 1.900"
and you welded the guide plate center to centers at 1.940" then there is no way the rocker roller tips should be sitting to the outside.
Your guide plate spacing looked good.
Something is different than normal and we are about to find out.

Please simply measure between the pushrods at the guide plates.
Also measure between the valve stems and between the rocker studs.

Don't worry about adding any of the diameters. I just want the raw numbers.
Thanks

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Re: 300 torque build 85 Bronco

Post #125 by BigBlue94 » Mon Feb 18, 2019 6:07 pm

1.545" between 3/8s pushrods, give or take .010

1.209" between valve stem and rocker stud (not easy to measure)

1.92! Between valve tip centers
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #126 by pmuller9 » Mon Feb 18, 2019 6:12 pm

How much between rocker studs?

1.92" between valve stem tips or valve stem tip centers?

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Re: 300 torque build 85 Bronco

Post #127 by BigBlue94 » Mon Feb 18, 2019 6:21 pm

1.92 center to center came from measuring outside to outside, then subtracting the diameter if one stem.

1.94 approx center to center on rocker studs.

I roughly measured all the guideplates the same way and it came out to 1.918... I think that there is the problem!

All my pushrods look like this.
Image
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #128 by pmuller9 » Mon Feb 18, 2019 6:31 pm

To do this correctly you need to mark the pushrods where they go through the guides.
Then remove the guides and put the studs and rockers back in place at the correct lifter preload.
Then center the rocker roller tips on the valve stem and measure the distance between the pushrods at the place where you marked them.

You cannot just grind the guide slots out. The rockers will not stay centered and will cause damage.
You will need to weld a new set.

My head with the guide plates was also an 85 head.

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Re: 300 torque build 85 Bronco

Post #129 by BigBlue94 » Mon Feb 18, 2019 6:36 pm

pmuller9 wrote:To do this correctly you need to mark the pushrods where they go through the guides.
Then remove the guides and put the studs and rockers back in place at the correct lifter preload.
Then center the rocker roller tips on the valve stem and measure the distance between the pushrods at the place where you marked them.

You cannot just grind the guide slots out. The rockers will not stay centered and will cause damage.
You will need to weld a new set.

My head with the guide plates was also an 85 head.


That is crystal clear, thank you!

Yeah, once I said grind them out, I realized they would no longer be guiding the pushrods...
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #130 by 54-4x4 » Mon Feb 18, 2019 9:08 pm

Very good you found out before you fired up your engine.Would it be possible to remove your pushrod guide plates and cut your welds then clean them up and then reweld them in their correct spaceing?

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Re: 300 torque build 85 Bronco

Post #131 by pmuller9 » Mon Feb 18, 2019 11:42 pm

BigBlue
Would you do me a favor and measure the distance from the center of the rocker arm roller tip to the center of the pivot (fulcrum)
Thanks

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Re: 300 torque build 85 Bronco

Post #132 by BigBlue94 » Tue Feb 19, 2019 9:52 am

54-4x4 wrote:Very good you found out before you fired up your engine.Would it be possible to remove your pushrod guide plates and cut your welds then clean them up and then reweld them in their correct spaceing?


I'm sure I could, but that seems like a lot of work to save 50 bucks.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #133 by 54-4x4 » Tue Feb 19, 2019 5:58 pm

BigBlue94 wrote:
54-4x4 wrote:Very good you found out before you fired up your engine.Would it be possible to remove your pushrod guide plates and cut your welds then clean them up and then reweld them in their correct spaceing?


I'm sure I could, but that seems like a lot of work to save 50 bucks.

I guess you have more money than me and I have more time than you.Kidding aside,just a suggestion.

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Re: 300 torque build 85 Bronco

Post #134 by BigBlue94 » Tue Feb 19, 2019 6:05 pm

pmuller9 wrote:BigBlue
Would you do me a favor and measure the distance from the center of the rocker arm roller tip to the center of the pivot (fulcrum)
Thanks


Approximately 1.575"
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #135 by BigBlue94 » Tue Feb 19, 2019 6:08 pm

54-4x4 wrote:
BigBlue94 wrote:
54-4x4 wrote:Very good you found out before you fired up your engine.Would it be possible to remove your pushrod guide plates and cut your welds then clean them up and then reweld them in their correct spaceing?


I'm sure I could, but that seems like a lot of work to save 50 bucks.

I guess you have more money than me and I have more time than you.Kidding aside,just a suggestion.



Money, no, but I dont have a ton of time either lol

I'm really not sure I could get them straight and parallel after cutting them up.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #136 by BigBlue94 » Wed Feb 20, 2019 4:36 pm

Son of a !!!!!

I was supposed to use thread sealer on my flywheel to crank bolts wasnt I?
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #137 by Fordman75 » Wed Feb 20, 2019 6:19 pm

I use red loctite.
Ted

54 Ford F100/F150 4x4
300, NP435 4spd, NP205 transfercase

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Re: 300 torque build 85 Bronco

Post #138 by BigBlue94 » Wed Feb 20, 2019 6:53 pm

Thought I'd read they can weep oil if not sealed... maybe I'm wrong
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #139 by THE FRENCHTOWN FLYER » Wed Feb 20, 2019 7:10 pm

Yes. The bolt holes go through the rear crank flange into the crankcase. Do not put thread locker on the bolts until you are ready to torque them so the sealer does not start to set up and give a false torque reading.
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Re: 300 torque build 85 Bronco

Post #140 by BigBlue94 » Thu Feb 21, 2019 8:50 am

Thanks... I guess Haha now the engine has to come back out :bang:

Any specific reason for through holes instead of blind?
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #141 by bubba22349 » Thu Feb 21, 2019 2:03 pm

To be able to use a longer bolt with more thread area, would be my guess. :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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THE FRENCHTOWN FLYER
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Re: 300 torque build 85 Bronco

Post #142 by THE FRENCHTOWN FLYER » Thu Feb 21, 2019 6:17 pm

You do not have to take the engine back out. Clean out the bolt holes with carb cleaner or equivalent and torque the bolts to spec from underneath the vehicle. This will require that you lock the flywheel in place, not that hard to do.
FORD 300 INLINE SIX - THE BEST KEPT SECRET IN DRAG RACING

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Re: 300 torque build 85 Bronco

Post #143 by BigBlue94 » Thu Feb 21, 2019 6:33 pm

THE FRENCHTOWN FLYER wrote:You do not have to take the engine back out. Clean out the bolt holes with carb cleaner or equivalent and torque the bolts to spec from underneath the vehicle. This will require that you lock the flywheel in place, not that hard to do.


That would require removing the driveshafts, transmission, crossmember, skid plate, and transfer case. As it sits its mated to the trans and has only two old head bolts in the bell housing used as guides. The motor mounts aren't bolted to the frame even. I think pulling the engine would be easier, and not really all that hard.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #144 by BigBlue94 » Thu Feb 21, 2019 6:38 pm

bubba22349 wrote:To be able to use a longer bolt with more thread area, would be my guess. :nod:


Darn Ford engineers! present company excluded... Hahaha :mrgreen:

Makes sense to me. Blind holes generally cost more and are more tedious to machine too. They caused me some engineering fits on a catch can I designed and made for myself and a buddy.
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #145 by BigBlue94 » Sun Feb 24, 2019 12:37 pm

Took the engine back out today. Took about 15 minutes. Pulled the clutch and pulled the flywheel, only to find that I HAD indeed used red loctite on the flywheel bolts. :lol:

Oh well, itll make doing the work on my new guideplates easier, considering the top of the core support is 5ft off the ground. Speaking of guideplates, I still have two sets from my pack of 8 originals. They sell them individually so itll only be about 35 bucks!
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #146 by BigBlue94 » Sun Mar 03, 2019 3:04 pm

Well, I got the new guideplates welded up on 1.95 centers. As I was trial fitting before torquing the studs down, i noticed one rocker on the #5 cylinder was extra rockery. I pulled it off and compared to another one. The stud bore in the fulcrum was .440". Whereas the other 11 match eachother at .375". I'm using 3/8" studs...

Just another setback... :bang:
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #147 by THE FRENCHTOWN FLYER » Sun Mar 03, 2019 3:37 pm

You can probably contact the rocker arm manufacturer and just replace the fulcrum in your existing rocker arm.
FORD 300 INLINE SIX - THE BEST KEPT SECRET IN DRAG RACING

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Re: 300 torque build 85 Bronco

Post #148 by BigBlue94 » Mon Mar 04, 2019 1:03 pm

I contacted summit racing about my rocker arm. Since the individual rockers are on backorder, they are sending me a whole new set. I'll swap the 7/16 rocker out for a 3/8 one and send it back to them, all free of charge.

Now that's good service!
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

BigBlue94
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Re: 300 torque build 85 Bronco

Post #149 by BigBlue94 » Sun Mar 17, 2019 5:40 pm

I've been a busy beaver since my last post.

Most of the large stuff is done and hooked up. I made new starter cables out of 1/0 welding cable. Radiator is in, as is the power steering pump, alternator, starter, and carb. I poured oil in today through the top of the head, soaking all the rockers, valves, pushrods, and lifters. I also poured some in through the distributor hole. Fuel system is plumbed, as is the power steering, minus a fitting I misplaced.

Main items to go are:
-Wiring the DUI distributor
-Hooking up starter positive wire
-Install plugs and wires
-Drain the fuel tank
-Install guage senders and wires
-Find TDC and stab distributor after priming the oil pump

Image
1985 Bronco. 309ci I6, NP435, 4.56 gears, Detroit locker and tru-trac, 4" lift, and 37" swamper tires. The 309 is 9.75:1 CR with a Schneider 140H cam, 4bbl, roller rockers, larger valves, and headers.

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Re: 300 torque build 85 Bronco

Post #150 by 54-4x4 » Sun Mar 17, 2019 7:33 pm

That looks good.I bet it feels good to see that engine almost ready to fire up.Nice.

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