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4L60 Tranny shift kit

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Old Apr 3, 2026 | 10:49 PM
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Default 4L60 Tranny shift kit

Fellow Vette enthusiasts,

I want some options on what to put in my 82 to make the shifts harder and hopefully bark going into 2 (3?!) I want to buy the kit and have my trusted local shop put it, but wanted some input to see if there's anything else I might want done in the meantime. TIA.

Luke
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Old Apr 4, 2026 | 01:02 PM
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Perhaps a clutch pedal?

The fully-optioned versions of the Holley Terminator-X Max include automatic transmission control. And they'll also control a boosted LS engine. That would be my suggestion.

I think @DblTrbl has a 4L80e. His thread is worth reading,

https://www.corvetteforum.com/forums...strip-car.html
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Old Apr 4, 2026 | 01:57 PM
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Making a transmission "bark the tires" isn't exactly the best thing for a transmission internals. Do you have the "Corvette servo"? The Corvette servo along with a .472" or .500" boost valve will firm up the shifts. Both can be done with the transmission in the car.












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Old Apr 4, 2026 | 03:17 PM
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I'm not a 4l60 guy, but on the 4l80 in my C3, I bypassed the 2nd and 3rd accumulators and slightly increased the feed hole for 1st, 2nd and 3rd gears. 2nd gear shift is fantastic. During cruising, 2nd gear shift is very firm. Under boost it's a kick in the pants.

I even sheared all 5 studs on a second gear shift once.



Also, 2nd gear shifts (at full boost) spin the tires on the rim.



The best resource for 4l60 I've seen is LS forums automatic transmission section

With tips from the LS forums, I built my 4L80e to handle 1000 hp.
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