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Old 01-22-2008, 09:54 AM
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Stall Question

I am running a 381 with a TH350. I have a Comp Cam 268H High Energy cam with a Holley 650 dbl pumper and Edelbrock Performer intake. My question is can i use the stock converter with this setup or should i go to something like a 2200 or 2500 stall. What would be the benefits/disadvantages of both?

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Old 01-22-2008, 11:37 AM
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I am in the middle of changing mine aswell
I would say to call TCI or the other guys and give them your specs.
I would suggest calling them because depending on who you talk to youll get a different answer everytime on what torque converter to use.
Then afte you talk to TCI call HUghes and see if both answers jive.
here is a write up from TCI.
Drivability concerns in choosing a torque converter - A performance torque converter should not compromise one aspect of car performance to achieve another. When investigating a converter purchase ask whether the particular torque converter being looked at may improve initial takeoff at the sacrifice of top end mph or other similar results, questions, etc. With the technology and product available today a buyer very seldom needs to sacrifice one area of performance to gain in another. However, without proper selection assistance or guidance (and with many under engineered products on the market today) it is unfortunate that many buyers end up with a product that does not best suit his needs or expectations. Too low a stall torque converter will not benefit the customer. If the user has an application which requires at least 3000 rpm stall and they purchase a 2000 to 2500 rpm stall range converter, it will normally not even give them the 2000 rpm stall. It will act very similar to the stock torque converter they just removed.why? Because the engine needs to operate in its optimum rpm range and since the chosen torque converter is below that range, it is not getting enough load from the crankshaft side to operate as designed. Symptoms include engine stalling when in gear at a stop, low stall speed, hesitation when going to full throttle, a "bog" when leaving from stop at wide open throttle. Too high a stall range torque converter will not benefit the customer. You will see this situation most often when the customer does not have sufficient gear ratio for the converter stall range or the engine is not capable of the appropriate rpm range (too small a duration camshaft, inadequate valve springs, too low compression, etc.) Symptoms include high "revs" to pull away from stop, "marshmallow" accelerator feel when driving at part throttle, transmission and possibly engine overheating, and a pronounced engine rev when nailing the throttle from a cruising speed.
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Old 01-22-2008, 12:14 PM
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Quote:
Originally Posted by mightycarlo10
I am running a 381 with a TH350. I have a Comp Cam 268H High Energy cam with a Holley 650 dbl pumper and Edelbrock Performer intake. My question is can i use the stock converter with this setup or should i go to something like a 2200 or 2500 stall. What would be the benefits/disadvantages of both?

That cam was designed by Harold Brookshire i believe . It can be ran with the stock convertor . Not sure of your cars weight, or the gearing you have . This DOES play an important roll in convertor selection .

1,500-5,500 is the range for that cam . Thou a stock convetor will work as Comp even says , i'd contacta couple convertor company's . I'd tend to think you'd have a performance gain with a 2,200 to 2,400 convertor ( cam makes good torque there) .

You don't want to much higher on the convertor ( you may be to far into power range of the cam ) Not enough convertor may have a * Bog* off idle .

Dang i type slow ... Like dawg said , check with convert company's and get a feel that way.
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Old 01-22-2008, 01:55 PM
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I will contact some of those people, but just to add, the car weighs about 3800 lbs and has 3.42 gears and 27 inch tires.
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Old 01-22-2008, 04:16 PM
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heres something from TCI to help out

**********

Full text: http://www.tciauto.com/Products/Converters/

Last edited by Jon; 01-22-2008 at 09:35 PM. Reason: Copy-pasting. Please see: copy-pasting guidelines.
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