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300 torque build 85 Bronco

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BigBlue94
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Posts: 374
Joined: Wed Mar 07, 2018 6:38 pm
Location: Hoyt, Kansas

Re: 300 torque build 85 Bronco

Post #301 by BigBlue94 » Tue May 07, 2019 12:30 pm

Well, Sunday I made it 700 miles. I made it up over 10.5k and 11k passes, only dropping down to 40mph at the top. Shift er back into 3rd and up we went. Got down to 3100 ft before the jets were just too lean and I couldn't maintain speed without opening g the secondaries.

The next day I made it about 60 or 70 miles before disaster struck.

Image

Spent last night in Salina, 120 miles from home waiting on parts. Luckily the 4x4 shop across the street had a NIB Spicer spindle for me!
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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THE FRENCHTOWN FLYER
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Location: FRENCHTOWN

Re: 300 torque build 85 Bronco

Post #302 by THE FRENCHTOWN FLYER » Tue May 07, 2019 12:57 pm

ouch
I hope there's no frame damage. I just looked at my friends rebuild and he had to boiler plate the frame in front.
FORD 300 INLINE SIX - THE BEST KEPT SECRET IN DRAG RACING

pmuller9
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Posts: 3475
Joined: Tue Aug 06, 2013 12:33 am
Location: Columbus, Indiana

Re: 300 torque build 85 Bronco

Post #303 by pmuller9 » Tue May 07, 2019 1:20 pm

Wow! When you decide to do a shaken down run you get serious.
Hope the rest of the way home is smooth sailing.

BigBlue94
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Posts: 374
Joined: Wed Mar 07, 2018 6:38 pm
Location: Hoyt, Kansas

Re: 300 torque build 85 Bronco

Post #304 by BigBlue94 » Tue May 07, 2019 4:17 pm

pmuller9 wrote:Wow! When you decide to do a shaken down run you get serious.
Hope the rest of the way home is smooth sailing.


Hah you arent the first to say that!
Broke a rear driveshaft out there and my spare tire carrier too. But man it was a good time! AbandonedBronco and I were the only big sixes out there of upwards or 150 Broncos. I think there was at least one 200 small six too, in a stock 77 bronco. And a bent 6 in a bronco 2.

Damage was kept to a minimum luckily.

Had to get a new spindle and nuts, hub assembly, and caliper and pads. And obviously the lockouts. Luckily, when it happened, the caliper slid out of its mount, instead of breaking the knuckle.

Image

I was 150 miles from home and my AAA covers up to 100 miles...

This was the first morning, with my band-aided harmonic balancer. Not the steepest I went up... or down for that matter.

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.

54-4x4
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Location: Valemount,B.C.

Re: 300 torque build 85 Bronco

Post #305 by 54-4x4 » Tue May 07, 2019 6:16 pm

Nice tortcher test.I have a friend that does the same.He likes to find the weak points then he can fix the problem and try to make it better.

Wesman07
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Joined: Tue Aug 23, 2016 10:00 am

Re: 300 torque build 85 Bronco

Post #306 by Wesman07 » Thu May 09, 2019 12:26 am

When those wheel bearings fail on big trucks, they fail fast and without warning. I have almost doubled the life of my wheel bearing by switching to Lucas marine wheel bearing grease from their red and tacky. It doesn’t look like grease wash out was the problem though. Even with a Dana 60 and 35s I only get 20-30 thousand miles out of wheel bearings.

How do you like your Irocks?

Post more pics!
In-lines we trust

86 f150 300 efi with advanced stock cam. Np435, Dana 60/ 10.25, 35" BFG's, four link front suspension with 12" travel fox coil overs, custom deaver leaf pack in the rear.

BigBlue94
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Posts: 374
Joined: Wed Mar 07, 2018 6:38 pm
Location: Hoyt, Kansas

Re: 300 torque build 85 Bronco

Post #307 by BigBlue94 » Thu May 09, 2019 12:04 pm

I had taken that side apart right before I left to fix the lockout cap screws. I packed that sucker with Ford Moly Grease out of a blue can. I'm pretty sure I gave the bearings too much preload.

I love the Iroks. Mine are the non-directional version, in ten ply. I drive a lot of highway, hence the ten plys. The ND irok helps in reverse with traction. They are also relatively quiet on the highway. I ran about 25psi all the way out there and never aired down.

I dont have many of my own pics, as I was driving white knuckled lol.

Welding a track bar
Image

Awesome B2 on He11's Gate. I didnt do this one lol
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View from He11's Revenge, over the top of the bronco.
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74 gettin some!
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Ready to roll out to Fins N Things in the rain
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You can see part of the trail in the upper left, two black stripes
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Some FSBs
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AbandonedBronco in the middle
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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THE FRENCHTOWN FLYER
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Re: 300 torque build 85 Bronco

Post #308 by THE FRENCHTOWN FLYER » Thu May 09, 2019 12:22 pm

Stunning shots.
You guys got chutzpah going out there far from civilization with little tech support.
FORD 300 INLINE SIX - THE BEST KEPT SECRET IN DRAG RACING

BigBlue94
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Posts: 374
Joined: Wed Mar 07, 2018 6:38 pm
Location: Hoyt, Kansas

Re: 300 torque build 85 Bronco

Post #309 by BigBlue94 » Thu May 09, 2019 12:57 pm

There were like 150 Broncos our there playing around. While official tech support is sparse, theres plenty of good ol Ford guys and gals out there that brought the right part or tool.

The one shot is showing a trail welder being used to repair a trackbar. It just hooks to the battery and goes. There was apparently more breakage this year than the 9 previous years
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.

Wesman07
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Posts: 437
Joined: Tue Aug 23, 2016 10:00 am

Re: 300 torque build 85 Bronco

Post #310 by Wesman07 » Thu May 09, 2019 4:48 pm

Now that your carb is tuned. Do you like the 220 duration cam for your set up?
In-lines we trust

86 f150 300 efi with advanced stock cam. Np435, Dana 60/ 10.25, 35" BFG's, four link front suspension with 12" travel fox coil overs, custom deaver leaf pack in the rear.

BigBlue94
Registered User
Posts: 374
Joined: Wed Mar 07, 2018 6:38 pm
Location: Hoyt, Kansas

Re: 300 torque build 85 Bronco

Post #311 by BigBlue94 » Fri May 10, 2019 11:05 am

Wesman07 wrote:Now that your carb is tuned. Do you like the 220 duration cam for your set up?


Carb is far from perfect, but drivable for sure. Still a bit lacking out of the hole.

The 280 cam I'm running seems to be great. It feels way more peppy than any SBF I've driven. It seems to have great power all the way through the powerband. Once the secondaries open around 3000 rpm, it really takes off.

On a side note, I've been running 91 octane and not had one bit of pinging or detonation with the 9.75 CR and 7.5 dynamic CR
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.

pmuller9
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Joined: Tue Aug 06, 2013 12:33 am
Location: Columbus, Indiana

Re: 300 torque build 85 Bronco

Post #312 by pmuller9 » Fri May 10, 2019 12:56 pm

Great feedback. Thanks.

There should be better low rpm response and gas mileage.
What is the initial timing and total timing?
Are you running vacuum advance?

BigBlue94
Registered User
Posts: 374
Joined: Wed Mar 07, 2018 6:38 pm
Location: Hoyt, Kansas

Re: 300 torque build 85 Bronco

Post #313 by BigBlue94 » Fri May 10, 2019 4:54 pm

pmuller9 wrote:Great feedback. Thanks.

There should be better low rpm response and gas mileage.
What is the initial timing and total timing?
Are you running vacuum advance?


Milage coming back was better, a bit over 12mpg. Coming down the mountains, and in eastern CO, I was cruising at 16 to 17 on the wideband and it was cruising great. But after I got below 3500 ft, it was getting too lean, 17+. That's when I changed the jets out.

Initial timing is 14, and the DUI is set to 24° at 3000 rpm. I have not physically checked total timing yet. Yes vacuum advance.

It's not so much poor throttle response at low rpms, it just has a bit of a stumble. Not very bad, but with a manual trans I notice it, especially since i start in 2nd gear.
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.

pmuller9
Registered User
Posts: 3475
Joined: Tue Aug 06, 2013 12:33 am
Location: Columbus, Indiana

Re: 300 torque build 85 Bronco

Post #314 by pmuller9 » Fri May 10, 2019 6:07 pm

BigBlue94 wrote:Milage coming back was better, a bit over 12mpg. Coming down the mountains, and in eastern CO, I was cruising at 16 to 17 on the wideband and it was cruising great. But after I got below 3500 ft, it was getting too lean, 17+. That's when I changed the jets out.

Initial timing is 14, and the DUI is set to 24° at 3000 rpm. I have not physically checked total timing yet. Yes vacuum advance.

It's not so much poor throttle response at low rpms, it just has a bit of a stumble. Not very bad, but with a manual trans I notice it, especially since i start in 2nd gear.

"F-250 restorer" was having similar stumble issues but has managed to resolve it.
https://www.ford-trucks.com/forums/1581 ... st18646099

Your ignition timing looks good but yes, you should check it with a light.

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