Transmission for a procharged 5.3 gmc

[ROLNLO GMC]

I just put a intercooled procharger on my 5.3 Gmc, and blew up the stock transmission. need help, what to use? I'm pushing 500 rwh. with 43 lb injectors.

[mjgjr72@juno.co]

get a fully build 4l60 or do a 4l80 swap

[Luke2kZ71]

where in tx are u located? might be able to reccomend a few shops.

[ROLNLO GMC]

Sherman

[99silveradoguy]

your best bet would to do a 4l60 to 4l80 conversion , it cost bout $600 minus the 4l80 tranny (check junkyards) and labor

you could buy a pre-built up 4l60 or 4l80 too but they tend to be alot more money.

btw if your truck has the stock 10 bolt , say good bye, plan on buying new gears for it or switching the axle over to a 14 bolt.

400+ hp on going to the 10 bolt and towing/racing/off roading kill the spider gears pretty bad , I know form experience :(