i blew mine up with very minimal bolt-ons at 52k.....im also lugging around close to 1000lbs. more than you f-body guys. they arent very good transmissions IMO. when you do blow it up, get one built by a reputable shop (pro-built, team tripp, dynotech) you wont be sorry. the mom and pop shops just cant be trusted, i've heard too many horror stories of people blowing rebuilt 4l60e's just months later because the shop they used didnt know what they were doing
I dont have a very positive outlook on them, I have seen really built ones in the 9s and 10s, but I have also seen the same trans that are supose to be built, all by reputable places, gernade in low 11 sec cars constantly. I like my 4L60, because having over drive rocks, but if it went, I would be very tempted to go down to Transking or Circle D and get a TH350 built, I have plenty of friends in the mid 9s w/ TH350 cars
A forum community dedicated to all LS1 and LT1 powered vehicles owners and enthusiasts. Come join the discussion about performance, specs, builds, conversions, swaps, modifications, troubleshooting, maintenance, and more!