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Search found 3522 matches

by pmuller9
Fri Jan 24, 2020 9:29 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston and connecting rod combination
Replies: 27
Views: 1441

Re: Another piston and connecting rod combination

The rod that fits the 300 six that has the same .990" big end width is the 2.100" small journal 6.385" long BBC rod. Both Molnar and Compstar make one. The reason for considering the LS rod is it opens up the wide variety of SBC pistons that have a close enough pin height to work in t...
by pmuller9
Fri Jan 24, 2020 9:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Valve length
Replies: 8
Views: 161

Re: Valve length

The DCOE style is just another option for me. I'm also looking at single bodies. With the DCOE style I was thinking about a narrow common plenum right after the TB's then into straight tubes into the head. Kind of like a sideways tunnel ram manifold between the DCOE TB's and the head. Not sure whic...
by pmuller9
Fri Jan 24, 2020 7:41 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Valve length
Replies: 8
Views: 161

Re: Valve length

For rocker arms I am going to get the Comp 1826-12 you ran in the catalog of conceptual build plans thread. Haven't decided on cam specs yet, but it will be aggressive. Might do a roller, beehive springs. The plan is to put this build in a 32-34 Ford eventually so sound, looks and fair amount of po...
by pmuller9
Fri Jan 24, 2020 6:26 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston and connecting rod combination
Replies: 27
Views: 1441

Re: Another piston and connecting rod combination

Very Good Info. Thanks
The LS rod adds .050" rod clearance which isn't that much IMO and the article states that a lot of side clearance can be a problem in high rpm race engines which the 300 six is not.
I'm thinking that LS rod side clearance control is not a concern in the 300 six.
by pmuller9
Fri Jan 24, 2020 6:19 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Turbo Manifold DIY
Replies: 7
Views: 551

Re: Turbo Manifold DIY

Firepower354 wrote:Isn't there room for the shortened HD, or even standard?

Yes but the goal is to move away from a manifold that has a common log to all six cylinders.
The exhaust manifold pressure is at least twice the intake manifold pressure and the engine hits wall as you try to make high rpm power.
by pmuller9
Fri Jan 24, 2020 6:07 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up a Turbo
Replies: 19
Views: 457

Re: Picked up a Turbo

For some reason I lost this paragraph in the previous post. I was thinking that you could use the complete EFI intake and exhaust system but use an aftermarket EFI system like the Megasquirt with speed density. Trying to stay with the budget concept but wanting you to have something that works well....
by pmuller9
Fri Jan 24, 2020 2:15 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up a Turbo
Replies: 19
Views: 457

Re: Picked up a Turbo

This is a good planning conversation IMO the C6 is still the best route for off road and you could use the BW turbo you have now. In reference to the 500 rpm idle. If you go with the manual trans, I was thinking a very smooth low rpm idle and good off idle torque would be better suitable for extreme...
by pmuller9
Fri Jan 24, 2020 1:50 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Valve length
Replies: 8
Views: 161

Re: Valve length

For rocker arms I am going to get the Comp 1826-12 you ran in the catalog of conceptual build plans thread. Haven't decided on cam specs yet, but it will be aggressive. Might do a roller, beehive springs. Sounds like a very fun project. I love the looks of six intake stacks. I have since changed my...
by pmuller9
Thu Jan 23, 2020 9:14 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Valve length
Replies: 8
Views: 161

Re: Valve length

Very Nice Valves! The stock 240 valves are 4.810" in length. The SBC 4.910" length valves have been used many times to allow a higher installed spring height. There will be no problem using a 4.960" length valve. It will give you room for a locator and spring shims so you can get all ...
by pmuller9
Wed Jan 22, 2020 11:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Tractor Puller
Replies: 208
Views: 28037

Re: Tractor Puller

Looking Good!
by pmuller9
Wed Jan 22, 2020 7:06 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up a Turbo
Replies: 19
Views: 457

Re: Picked up a Turbo

Thanks for the explanation of what you want to do. I assuming you will be using a manual transmission with a 4.90 1st gear ratio. That will require the use of a smaller turbo so here is what I'm am thinking. For crawling with good traction it would be good if the engine had a heavy flywheel and idle...
by pmuller9
Wed Jan 22, 2020 11:41 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up a Turbo
Replies: 19
Views: 457

Re: Picked up a Turbo

A 300 crank works in a 240 block. You really want the low rpm power the 300 provides over the 240 for off road work. A 57 mm turbo would give you a 2000 to 5000 rpm power band. Please explain what rpm power band you actually need when you specified a "Crawler" engine. What type of terrain ...
by pmuller9
Tue Jan 21, 2020 11:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up a Turbo
Replies: 19
Views: 457

Re: Picked up a Turbo

The Borg Warner 179079 turbo is way to big for a 240 six for your application so if you are still planning on using it you need a 300 six. The following is for your consideration: If a 300 six with a manual transmission is set up for boost off idle with full boost coming in at 1500 rpm, it is fitted...
by pmuller9
Mon Jan 20, 2020 5:13 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Torino Wagon Turbo 250 build
Replies: 10
Views: 514

Re: Torino Wagon Turbo 250 build

How are you going to retard the timing as boost increases?
by pmuller9
Mon Jan 20, 2020 12:39 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up a Turbo
Replies: 19
Views: 457

Re: Picked up a Turbo

why would you use a 240 head if you want to lower the compression ratio?
Last time I looked you had 15cc KB pistons with a big valve 300 head?

What are you thinking about for a "Crawler" engine?
I have some questions.
by pmuller9
Mon Jan 20, 2020 11:54 am
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up a Turbo
Replies: 19
Views: 457

Re: Picked up a Turbo

The turbo is the right size for a 300 six if you are looking at making a lot of upper rpm power. Did you look at the link to MatchBot that was in my post? At the bottom you will see the points on the compressor map for your turbocharger that represent where the engine would be operating at 12 lbs of...
by pmuller9
Sun Jan 19, 2020 5:23 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Picked up a Turbo
Replies: 19
Views: 457

Re: Picked up a Turbo

The Borg Warner 179079 turbocharger has a high pressure compressor and will run comfortably at 45 psi of boost. It has a 61.4 mm compressor inducer that has the usually Borg Warner wide band operating range. The high pressure compressor doesn't really start to work until 10 to 12 psi of boost at sea...
by pmuller9
Sun Jan 19, 2020 11:37 am
Forum: 240-300 "Big Block" Six Performance
Topic: HELP WITH a 70s 4.9 300 upgrade
Replies: 5
Views: 246

Re: HELP WITH a 70s 4.9 300 upgrade

If you are going to use an aftermarket cam that has higher lift then you don't need the higher ratio rocker arm. As you found out the Scorpion roller rockers only fit the 1985 and later pedestal mount heads. The Harland Sharp are the only roller rockers that have the correct length for the proper ge...
by pmuller9
Sun Jan 19, 2020 11:24 am
Forum: 240-300 "Big Block" Six Performance
Topic: Engine is back
Replies: 90
Views: 6273

Re: Engine is back

How even is the valve stem tips now?

Please go over the valve seats lightly with lapping compound as FTF suggested to check the contact area on both the seats and the valve
surfaces.
The contact width should be around .040"
by pmuller9
Fri Jan 10, 2020 6:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 300 Rebuild
Replies: 95
Views: 7190

Re: 300 Rebuild

Keystoner16 wrote:I did finally degree the cam yesterday, and the numbers are right on. The process took a while to figure out, and then I felt dumb, because it's actually pretty simple. At any rate, now I can press on the timing gear

How did you degree the cam without the timing gear pressed on to the cam?
by pmuller9
Fri Jan 10, 2020 9:36 am
Forum: 240-300 "Big Block" Six Performance
Topic: New valve spring retainer suppliers?
Replies: 8
Views: 328

Re: New valve spring retainer suppliers?

You are correct. I haven't found an aftermarket retainer to fit the Comp 903 springs. I don't have any stock retainers left. I'm hoping another member here can help you out. Is there a local wrecking yard that might have a 300 six that you can get the stock retainers from? Which Comp cam do you have?
by pmuller9
Tue Jan 07, 2020 9:42 am
Forum: 240-300 "Big Block" Six Performance
Topic: 300 truck headers
Replies: 13
Views: 638

Re: 300 truck headers

Flow is only part of the concern.
The other important feature is scavenging.
The long tube header provides the best scavenging all through the power band.
by pmuller9
Mon Jan 06, 2020 12:12 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Big cam small cam:
Replies: 5
Views: 383

Re: Big cam small cam:

I know we've had this discussion previously on another site but I would like to review it again since this type of feedback from your project is valuable. When the engine was behind the C6 with a converter, the engine rpm would rise to converter stall under load and never have to work at off idle rp...
by pmuller9
Thu Jan 02, 2020 11:25 am
Forum: 240-300 "Big Block" Six Performance
Topic: Turbo Manifold DIY
Replies: 7
Views: 551

Re: Turbo Manifold DIY

The pipe increases diameter in the center to accommodate the other cylinders. My eventual goal with the built motor is 4-500HP, would this diameter piping support that? https://www.exhaustvideos.com/faq/how-to-calculate-muffler-size-pipe-diameter There isn't a need to increase the log diameter for ...
by pmuller9
Tue Dec 31, 2019 4:00 pm
Forum: 144-250 "Small Block" Six Performance
Topic: Alternative 200 six connecting rod
Replies: 41
Views: 8026

Re: Alternative 200 six connecting rod

And some bushed or better than stock custom 5.09" V8 Windsor con-rods would be better, with the right offset ordered. So its all a delicate balancing act... What offset are you talking about here? I'm gathering parts for a hi-po 200 build right now, and just ordered a set of Scat H-beam 302W r...
by pmuller9
Fri Dec 27, 2019 9:47 am
Forum: 240-300 "Big Block" Six Performance
Topic: 240 rod beam clean up
Replies: 18
Views: 777

Re: 240 rod beam clean up

You will have to recondition the the big end housing bores of the connecting rods if you replace the bolt bolts. You have to physically measure the bearing clearances with dial bore gauges and the bearings torqued in the rods. Just measuring the bearing thickness and doing the math won't give you t...
by pmuller9
Thu Dec 26, 2019 4:19 pm
Forum: 240-300 "Big Block" Six Performance
Topic: 240 rod beam clean up
Replies: 18
Views: 777

Re: 240 rod beam clean up

Is the polishing and balancing something that benefits a daily driver which stays under 3000 rpm? If you are doing a near stock rebuild like yours, polishing the beams won't have a benefit. Aside from that I prefer not to reuse the old rod bolts. The ARP bolts fit tighter and give better rod cap al...
by pmuller9
Mon Dec 23, 2019 12:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Another piston and connecting rod combination
Replies: 27
Views: 1441

Re: Another piston and connecting rod combination

Max_Effort wrote:With the narrower rod, I'd go with a piston guided rod set up.

That was the general consensus when I posed the question at this years PRI.
by pmuller9
Mon Dec 23, 2019 12:24 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Turbo 240 bit the dust. Hole in the block.
Replies: 43
Views: 1456

Re: Turbo 240 bit the dust. Hole in the block.

The oil pressure concern had to do with the very badly worn bearings at 5000 miles.
by pmuller9
Sun Dec 22, 2019 5:01 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Turbo 240 bit the dust. Hole in the block.
Replies: 43
Views: 1456

Re: Turbo 240 bit the dust. Hole in the block.

What was the cam spec on you Crower cam? The cam is .472 lift duration intake 219 @.050 exhaust 213 and 114 lobe seperation I like the short piston idea. It seems like thats the new way to go in modern engines. Did you see fords 7.3 gas will have a steel piston? It looks skeletonized I like the cam...
by pmuller9
Sun Dec 22, 2019 4:24 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Turbo 240 bit the dust. Hole in the block.
Replies: 43
Views: 1456

Re: Turbo 240 bit the dust. Hole in the block.

The turbocharger does drop the oil pressure so I wouldn't be afraid to use the HV pump. The only thing I would do is replace the roll pin that holds the distributor drive gear with a better grade solid pin to prevent shear. The 240 6.8" rod length allows the engine to rev to the moon. I wouldn'...
by pmuller9
Sun Dec 22, 2019 3:59 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Tractor Puller
Replies: 208
Views: 28037

Re: Tractor Puller

The numbers are looking very good.
Should work well at 7000+ rpm
by pmuller9
Sun Dec 22, 2019 3:43 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Turbo 240 bit the dust. Hole in the block.
Replies: 43
Views: 1456

Re: Turbo 240 bit the dust. Hole in the block.

Hot oil pressure needs to be 70 psi at speed when working the engine that hard. If you are going to use another set of stock 240 rods have the beams polished and shot peened after checking for cracks. Resize with ARP bolts. https://www.dropbox.com/s/95g3bpoga368gyo/240%20rod%20and%20piston.jpg?raw=1...
by pmuller9
Sun Dec 22, 2019 10:17 am
Forum: 240-300 "Big Block" Six Performance
Topic: Turbo 240 bit the dust. Hole in the block.
Replies: 43
Views: 1456

Re: Turbo 240 bit the dust. Hole in the block.

The Eagle LS rods come in 6.2", 6.46" and 6.56" lengths. After several conversation at PRI with those that have experience using rods that have less big end width than the crank journal width (NASCAR) it was recommended using the piston clearance to keep the rods from wandering on the...
by pmuller9
Wed Dec 18, 2019 11:58 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: B&M 144 Roots Blower 200 Planning
Replies: 9
Views: 667

Re: B&M 144 Roots Blower 200 Planning

Concerning the spreadsheet calculations for FINAL COMPRESSION RATIO. It is calculating the effective static compression ratio but the detonation threshold for a specific engine is more of a function of the Dynamic Compression Ratio. Generally the Ford 300 six operates naturally aspirated with a Dyna...
by pmuller9
Wed Dec 18, 2019 11:05 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Holman moody intake use for Paxton supercharger
Replies: 1
Views: 134

Re: Holman moody intake use for Paxton supercharger

The modified spacer that went partially into the plenum was used to increase the low to midrange response and was more beneficial on the 240 six.
IMO it doesn't meet your needs since the power is being supplied by the supercharger and mainly at high rpm.
by pmuller9
Wed Dec 18, 2019 9:31 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: B&M 144 Roots Blower 200 Planning
Replies: 9
Views: 667

Re: B&M 144 Roots Blower 200 Planning

The Autotec pistons are custom order. They are forged 4032 alloy aluminum. They run about $550 for a set of 6 dish pistons. The Weiand formula gets you close for a good starting place but it doesn't account for different engine Volumetric Efficiencies. It also doesn't take into account that the supe...
by pmuller9
Sun Dec 15, 2019 1:21 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Hypereutectic piston ring gap
Replies: 2
Views: 248

Re: Hypereutectic piston ring gap

KB hypereutectic pistons require more top ring end gap. See the two links below for further information.
http://www.hughesengines.com/TechArticl ... istons.php
https://www.lsxmag.com/tech-stories/blu ... g-end-gap/
by pmuller9
Sat Dec 14, 2019 10:55 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: B&M 144 Roots Blower 200 Planning
Replies: 9
Views: 667

Re: B&M 144 Roots Blower 200 Planning

I believe the 250 2V head had 58cc combustion chambers. Some things to consider. The B&M 144 blower runs best between 5000 and 10K rotor rpm with an absolute max at 14K rpm. The Volumetric Efficiency (VE) falls off below 4500 rpm. On your V8 engine where the drive ratio is around 2:1 you may hav...
by pmuller9
Thu Dec 12, 2019 9:53 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Casting and date code confusion
Replies: 12
Views: 747

Re: Casting and date code confusion

JPierce wrote:Image


Change "dl=0" to "raw=1"
by pmuller9
Thu Dec 12, 2019 9:49 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Coated pistons
Replies: 2
Views: 282

Re: Coated pistons

As wessman07 stated, there isn't any break-in requirements for coated pistons. We have tried many of the piston coatings and none have stayed on the piston skirts. The only process that is long term and has worked for us is hard anodizing. For our application it reduces piston expansion and protects...
by pmuller9
Tue Dec 10, 2019 10:30 am
Forum: 240-300 "Big Block" Six Performance
Topic: Tractor Puller
Replies: 208
Views: 28037

Re: Tractor Puller

Update?
by pmuller9
Mon Dec 09, 2019 2:42 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Ford should have done it
Replies: 43
Views: 1458

Re: Ford should have done it

Maybe
It needs to drain to the pan above the oil level in the pan.
It must be a big line (no resistance to gravity flow) that is downhill all the way.

Different thought. If you run two pipes back for the wastegates, the pipes can merge at the ends, at the gate therefore needing only one waste gate.
by pmuller9
Mon Dec 09, 2019 1:35 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Ford should have done it
Replies: 43
Views: 1458

Re: Ford should have done it

Would it help anything if the alternator was moved upward?
by pmuller9
Mon Dec 09, 2019 10:17 am
Forum: 240-300 "Big Block" Six Performance
Topic: Using a Holly 9776 on a 300
Replies: 7
Views: 547

Re: Using a Holly 9776 on a 300

Where is the ignition timing set at idle with the vacuum advance disconnected?
Which direction is the carb facing on the DP intake manifold?
by pmuller9
Mon Dec 09, 2019 10:12 am
Forum: Turbo, Supercharger, and Nitrous
Topic: Ford should have done it
Replies: 43
Views: 1458

Re: Ford should have done it

If the turbo is under the alternator, will the oil return line from the turbo be above the top of the oil pan?
by pmuller9
Sun Dec 08, 2019 6:38 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Ford should have done it
Replies: 43
Views: 1458

Re: Ford should have done it

Under the alternator looks like a good place. It was over 10 years ago for the turbo coating so even if I remembered that cost it wouldn't be relevent. There are some really good blankets as guhfluh pointed out. The wastegates on the 49 Ford were under the car while the turbochargers were high next ...
by pmuller9
Sun Dec 08, 2019 2:12 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Ford should have done it
Replies: 43
Views: 1458

Re: Ford should have done it

Is there room down by the starter?
The wastegates can be anywhere. They do not need to be close to the turbocharger.
by pmuller9
Sun Dec 08, 2019 1:55 pm
Forum: Turbo, Supercharger, and Nitrous
Topic: Ford should have done it
Replies: 43
Views: 1458

Re: Ford should have done it

Unless you are going to heat coat the turbine housing, the turbo will transfer a lot of heat to the alternator
On the 49 Ford we had to coat the turbine housings to prevent the paint from blistering on the hood.
https://www.dropbox.com/s/dj4en22i4xlpi ... 2.JPG?dl=0
by pmuller9
Fri Dec 06, 2019 3:27 pm
Forum: 240-300 "Big Block" Six Performance
Topic: Engine doesn't like a lot of timing.
Replies: 25
Views: 1015

Re: Engine doesn't like a lot of timing.

guhfluh is correct.
I made too broad of a statement in both cases.

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