What torque convertor stall should I get? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 04-24-2010, 12:58 PM
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What torque convertor stall should I get?

Hey guys got another question for you.

I have a 1972 Chevy Luv that I just pulled a 350 SBC out of. I am putting back in it's place a 454 BBC that will be mounted up to a T350 trans. The specifics that I know about the motor (I did some of the modifications listed below, but did not build the bottom end of the motor, so this is what I do know about it) are as follows:

4 bolt main Gen IV block.
Probably stock compression.
Dual feed 750 Holley Single Pumper.
Edelbrock Performer Intake.
Peanut port heads (yes I know they suck but this motor will be something fun to drive at the track occassionally until I get the cash to build this motor right).
The heads do have springs that are matched to the cam.
The cam is a flat tappet hydraulic Lunati, split pattern, .530/.542 lift at 219/227 at .050" with 112 centers.
The current gearing in the car is a Dana 40 with a 3.73 posi set up. However within the next couple of months that will be switched out for a 31 spline, 9 inch Ford, full tub with 4.33 gears and 33x15 Hoosiers or M/T Sportsman Pros and a 4 link.
I am estimating that the entire truck will weigh between 2700 and 2900 pounds when done with me in it.

I plan on going with a Hughes or TCI convertor, I am just wondering what would be the best stall speed to select given my torque band (which I have no idea where it will start or stop). Any guidance is appreciated. Thanks.

Brent

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Old 04-24-2010, 01:59 PM
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The stock 12" GM th 350 torque converter will work fine.

You'll see 2500 stall behind the BBC with this converter.
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Old 04-24-2010, 02:22 PM
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Sounds like you have the Voodoo #60202

Quote:
Hydraulic. Mid-level performance street cam with excellent drivability. Exceptional replacement for muscle car type cams with automatic transmissions. Works well with stock type exhaust manifolds and dual plane intake with mild 4 bbl carb. This is an awesome 4X4 and performance marine cam.

•Advertised Duration (Int/Exh): 262/268
•Duration @ .050 (Int/Exh): 219/227
•Gross Valve Lift (Int/Exh): .530/.542
•LSA/ICL: 112/108
•Valve Lash (Int/Exh): Hyd/Hyd
•RPM Range: 1400-5800
•Includes: Cam Only

Part Number: 60202
I originally chose a cam with similar specs to yours and ordered the B&M Nitrous Holeshot 2400 for my (TH400) truck.
This convertor is supposedly built to take 600+ HP, should you decide to go with nitrous or a blower.
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Old 04-24-2010, 07:55 PM
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Thanks Firebird and 66. Anyone else have any input?
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Old 04-25-2010, 06:40 AM
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...What F-BIRD'88 said...
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