What size stall?
Thread Starter
Launching!
Joined: Aug 2008
Posts: 253
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What size stall? Ok, I'm building a LQ4 408 with stock LS3 heads, 10.8:1 compression, pat G cam, victor jr intake (running a carb). Its going in a 1970 firebird weighing about 3500 curb weight i'm guessing. The car has a 12 bolt rear with 3.73 gears and a 28" tire. I plan to drive the car to the track about 25 miles away with a turbo 400 so i have no overdrive and it will be a non-lock up converter. I was thinking a 2800rpm stall? Since i don't really know how stalls work to much. I didn't know if i had a 3200-3500rpm stall how much it would be slipping if i was taching 2600rpm on the freeway. I want the car to be slightly efficient getting to the track and not going to kill my transmission from heat. I'm putting a tranny cooler on the car. Looking to run low-mid 11's 
Any recommendations are appreciated on the size stall!
Any recommendations are appreciated on the size stall! 
TECH Resident
Joined: Sep 2009
Posts: 859
Likes: 2
From: Frozen Tundra, WI
I think you will want a high torque multiplication converter for non lock-up street use. My 3200 is around 2.3 torque multiplication which is quite high. This will require less throttle input to get/keep you moving verses a lower torque multiplication.
TECH Resident
Joined: Sep 2009
Posts: 859
Likes: 2
From: Frozen Tundra, WI
Most converters don't "flash" over the rated stall unless you have a real heavy car or significant displacement. Standing on the brake (and gas) you won't usually reach the stall rating. At least that has been my experience.
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fast, We design and build converters like you are looking for. A converter can be built to give you driveability and performance. We do a lot of conversions such as yours. Give me a call and we can go over your combo and I can make a sugestion.
Greg
Greg
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FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
info@ftiperformance.com
FTIPerformance.com
FTI Converter build sheet
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