The reason the V6 Astro has a higher stall, when compared to the typical V8 application, is due to the lower torque output. It alows the motor to get a little more RPM, and therefore more power to accellerate the vehicle. Similarly, Performance and race converters allow an engine to get to a higher RPM, and get into the powerband of the engine before the full load is applied. (simplified explanation disclaimer)
For your application I would stick with a stock V8 converter.
btw, your LT1 is 260hp /330tq.
Dave
-- Edited by DaveM on Wednesday 10th of October 2012 10:47:04 PM
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There is a very fine line between “hobby” and “mental illness.”
I'm going to be swapping out my transmission and I was looking for some reliable information on torque converters so I came straight to the internet!
The motor is stock out of an 1995 Impala SS (260 hp/300 ft/lbs), 700r4, 3:42 rear and it weighs 3200lbs (without my fat ass in it).
The truck is about 1000 lbs lighter than the donor. I don't race it, just cruise and I want the torque converter lockup working too!
I understand the Impala had a stock stall of 1400-1600 rpm and it was suggested I get an stock T/C for a 4.3L Astro van that has a 1990 rpm stall. I'm not sure how the vehicle weight factors into the selection of the stall so any suggestions about the stall speed I should get would be appreciated?
We asked Big Ed what could be wrong with your tranny, and he said clutches. If the fluid isn't burned, then use the converter that's in your truck now for the replacement tranny, or just buy a Dodge.
-- Edited by hemi43 on Thursday 11th of October 2012 09:49:04 AM
