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Old 06-01-2012, 10:18 PM
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Allison torque converter??

Ok here's another possibility, the powerglide t/c to a 30 spline th400 is out. I talked to Mike @ Freakshow t/c, he used to work for Art Carr/Redneck before they went belly up. He says he can build a nice Allison t/c that will be pretty much bullet proof to fit my '32 Ford with the 507" Cadillac. It would be a 12" unit that will have 1800-2200 stall, my engine is supposed to idle at around 800 in gear. As said before going to dyno it next month then I'll know exactly what I'll need stall wise. I'm not in any hurry, just looking at viable options, does the sound like it would be a good t/c for a street cruiser with lots of torque.
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Old 06-02-2012, 06:13 AM
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As pointed out in your other thread on this application; an experienced converter person can build what your application requires.

It is all about fin angle inside the converter. Fin angle in the converter shell, turbine angle and stator fin angles. Clearance of these parts as the 2 pieces are welded together play a part of it too.

Call Hughes Performance , talk only to Pete ; he is sales manager with your specs on the engine and vehicle. What you are building is not that unusual of a package of power.

Caddy motor do not like to rev high, so your gear choice is important too
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Old 06-02-2012, 10:07 AM
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I think your stall is set up too tight..what is needed ffor the street is having the stall set so at an idle the car will not want to creep as in being stopped at a light..the stall in the stock cad is set tight because that is a big heavy car and takes a lot to move it..on our street rods we need a loose converter because they weigh a lot less and move easier..As far as revving a Cad motor the weakness is in the valve train as Cad never intended to rev high as what was needed was lots of down low torque to move a heavy car and not disturb the occupants while doing that hence the lots of cubes. That was the design philosophy of the cad drivetrain..

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Old 06-02-2012, 01:03 PM
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Thanks for your replys....I have already spoken with Pete @ Hughes, he must of been having a "ho-hum" day because he was less than enthused about my set up. I'm well aware of the Cad's engine design and weaknesses, that's why I installed forged cap screw rods and a shaft mounted roller rocker system.....among other upgrades during the complete re-build.

This engine will only see 5k very occasionally, I'll reword my question, will the Allison be overkill or would a well built TH400 converter with the usual upgrades be a better deal? I don't want to beat this subject to death, just want the right converter to start with so I don't have to tear it out after the car is done.....again thanks for your input........Dave
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Old 06-02-2012, 01:44 PM
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Quote:
Originally Posted by 327NUT
Thanks for your replys....I have already spoken with Pete @ Hughes, he must of been having a "ho-hum" day because he was less than enthused about my set up. I'm well aware of the Cad's engine design and weaknesses, that's why I installed forged cap screw rods and a shaft mounted roller rocker system.....among other upgrades during the complete re-build.

This engine will only see 5k very occasionally, I'll reword my question, will the Allison be overkill or would a well built TH400 converter with the usual upgrades be a better deal? I don't want to beat this subject to death, just want the right converter to start with so I don't have to tear it out after the car is done.....again thanks for your input........Dave
Pete is a laid back , knowledgeable guy. Your application is not that extreme .

Just a good converter build, with proper parts put together will work well for this.

I dismiss the allison converter comment myself, but then I've been in the biz a few years
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Old 06-02-2012, 02:31 PM
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id just use a oe converter a th350 is a bit lighter i would stay under 2000rpm if u go with a stall converter i agree the allision is over kill for a street rod just get a transstar or dacco converter youll be fine and save a few dolllars
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