Trans and converter
10-24-2009, 06:16 PM
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Trans and converter hey i have a question i have a ls1 with ms3 cam and 5.3l tsp heads. I had a built 4L60E transmission for it with shift kit and i had a custom tq converter built for it. The trans guy is friends with my family and has been building transmissions for 20+ years, i got the car completely together, and running and drove it for the first time today, the converter was built for 2400 rpms since thats the beginning of power for the cam. my question is does the computer tuning affect the stall on the converter he told me its supose to hold to 2400 rpm and it holds to like 1300 please any info???
10-24-2009, 07:08 PM
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What do you mean it "holds"?
The tuning has nothing to do with the stall, just the shift points and rev limiter. It can affect line pressure but that wouldn't change the stall speed, that is all via mechanical parts.
If by "built" for 2400rpm you mean that's the stall speed, than that is a pretty low stall for such a large cam and head package. You can't tell the stall speed unless you have a transbrake and can hold the trans to the stall speed. Even then it's not perfect.
You're probably leaving a lot on the table by having a 2400 stall. I have a 3600 stall and I'm nowhere near the power you're making. Most people with your setup are running 4000-4400 rpm stall for street/strip applications.
The tuning has nothing to do with the stall, just the shift points and rev limiter. It can affect line pressure but that wouldn't change the stall speed, that is all via mechanical parts.
If by "built" for 2400rpm you mean that's the stall speed, than that is a pretty low stall for such a large cam and head package. You can't tell the stall speed unless you have a transbrake and can hold the trans to the stall speed. Even then it's not perfect.
You're probably leaving a lot on the table by having a 2400 stall. I have a 3600 stall and I'm nowhere near the power you're making. Most people with your setup are running 4000-4400 rpm stall for street/strip applications.
