FI402Z

Could not find an exact thread on this, so basically will an LS7 lifter hold up in the 800rwhp range? I was going to go with the GMPP (CTS-VR) lifters but had read alot about them failing. THANKS!

The Fugitive

iTrader: (6)

The LS7 lifters would do alright many people use them and i am one of them. The GMPP does sound like a stronger lifter but I have no experience with them because i am still using the LS7's. Try calling Speedinc or EPP and see what they say.

black98ws6ta

iTrader: (77)

ls7 lifters will do fine.

pwrtrip75

iTrader: (8)

I have the stock 5.3 lifters in mine. Work just great and have for 3 years. I would think your cam and springs would have more to do with it, FI wouldnt.

LS1RedZ

iTrader: (19)

You will be fine with LS7. I am in the 700+ and mine are working fine.

Shawn @ VA Speed

iTrader: (3)

i have seen ls7 lifters in 1200rwhp builds,i usually use them to about 1000rwhp,after that i use the lunati link bar

bravoboost

I'm at 730whp on stock lifters. Do I have LS7 lifter from factory?

FI402Z

Thanks again guys for the overwhelming pour out of knowledge and support! LS7s it is!