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Author Topic: Converter stall question, 302 vs 351W  (Read 2404 times)
danford1
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« on: June 28, 2015, 09:10:44 pm »

 I have a converter stall question.
I'll list basic info on both a 302 and a 351W.

For this discussion let's use the same car for both engines and rear end and same built AOD.

Set up A) is a 302 roller, ported GT40 heads, Stage 1 TFS cam, Weiand Stealth intake, Holley 600 carb, Hedman headers, AOD with 4.11 gears in a 69 Mustang. Let's say 375 flywheel hp. Weight is say 3200 lb.

Set up B) is a built 351W, 10.5:1 compression, AFR 185 heads, Mild roller cam 230 duration, .575 lift, 112 LSA, Eddy Torker, Holley 750 carb, Hooker headers, same AOD, 4:11 gears, same 69 Mustang. Let's say 450 flywheel hp. Weight because of heavier engine, say 3300 lb.

Now. Let's say a 3000 stall Edge lock up converter is used for BOTH engines.
Let's also say that with the 302 it DID stall at 3000 rpm.

My question is about what stall will the same converter have behind the more powerful 351W engine?

 This discussion isn't about how fast the car is with either engine or if either engine can have a better combo of parts etc. This discussion will be about the stall of the same converter behind two different engines.

 This is a hypothetical car with hypothetical engines. Not real world. I just want to understand more about the stall of the same converter for both engines.

What are your predictions given the 3000 stall converter DID stall at 3000 rpm with the 302?

Thanks.
Danford1
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« Reply #1 on: June 28, 2015, 09:24:35 pm »

My money is on the heavier setup will flash higher on the accelerator...

Or are you talking "foot braking"?
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« Reply #2 on: June 28, 2015, 09:51:05 pm »

If the 351 developing more torque at 3000 then the 302 did, then the stall will be higher.  The cam is a little wilder, but the inches may still give you more torque.
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danford1
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« Reply #3 on: June 28, 2015, 10:11:09 pm »

 Foot braking at the strip is what I had in mind.
Thanks.
I thought it would be higher, just wanted more opinions.

Danford1
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Those who say it can't be done should not interrupt those that are busy doing it.


Dart 376 SHP block, 4.155" bore, 3.47" stroke, Woody custom cam, TFS 11R 205, ported Vic Jr, 750 mechanical carb. 1 5/8" Hedman headers. 517 Flywheel hp, 498 Flywheel tq.
Outlaw Bill
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« Reply #4 on: June 29, 2015, 05:58:53 am »

The stall will be slightly higher with the 351.
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