what stall convertar, and tranny should i use? - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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Old 02-04-2011, 11:46 PM
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Regardless, the amount of slip is not excessive at light throttle and/or cruise speeds w/a 3500 RPM stall speed TC- and that's where you are mistaken.

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Old 02-04-2011, 11:54 PM
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You are confusing stall speed(stator sprag locked, stator fins redirecting fluid at maximum efficiency, multiplying torque at the converter designs maximum rate(usually between 1.7 and 2.2 to 1 in most performance converters) with the speed at which the converter "couples"(stator sprag is no longer locked and converters driven turbine has matched (or nearly matched, never is 100% unless it is a lock-up clutch equipped converter) the drive turbine speed at lower than peak loads and power inputs.
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Old 02-05-2011, 04:03 PM
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I guess from your replies that you assume I've not been around cars or trannies since 1969. I give up, you're way too smart for me.
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Old 02-05-2011, 04:50 PM
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Quote:
Originally Posted by jeffery wells
o.k. im in the process of building a 400hp 350 to put in my 1980 chevy malibu, it has a thumper cam, performer intake manifold, 650cfm carb, and i just had the stock vortec heads machined out.
i have a turbo 350 transmition and i dont know if i should have a shift kit instaled or get a beefier tranny all together, and my other problem is i dont know what stall converter i should use, i have access to a tci 2400, but i dont know if it will give me the launch im going for, im really building this as an every day driver, but, there are so many imports around here that i cant help but run em from light to light, anyone with any sugestions would help.
I would question why you want to use a thumper cam- there are far better cams that make more power than those "bark w/o much bite" cams.

I know- you want the "sound", right?

AFA a "Performer" intake, if you add "RPM" to that, you'll have something worthy of your time and trouble.

Choose the torque converter to compliment the cam/engine's powerband. Often a "tight 10 inch" TC works well w/a performance SBC build, but this is a generalization- the exact TC will depend on other things besides the engine, like weight, use, traction, chassis set-up, etc. Use a tranny cooler.

A TH350 w/a solid rebuild- with a shift kit- will suffice- it will break the 7-1/2" diff way before the transmission breaks.
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