Hello all I have a question about which lifters to use in my new engine for my daily driver street/strip LT1, it's a na all forged 383 with ft pistons,splayed mains,the normal high performance mods ported heads & intake etc etc anyway which lifters are best suited to run up to 6500 - 6700 rpm?
I have a set of Comp R's but I've read alot of bad things about them so I've been looking at the GMPP racing lifters as used in the Caddy CTSV but I've heard they are noisy. I have Morels in another 383 I have but $550 is not in the budget for a set of those right now so what's the most relieable lifter on a budget? I also will be using the AFR hydra-rev kit if that makes any difference, I'm concerned about the lifters longevity and if they are noisy won't they cause tuning problems with the knock sensor?

 

OE lifters worked fine in my LE2 motor which saw 6500-6700 alot. It depends on the camshaft and valvesprings too.

 

OEM's.

Rich

 

i use the ls sevens, sorry num keys broken, but i am pretty sure they are the same as the oem

 

Another vote for ls7 lifters, same as stock, been working hard for me for 6k miles now. cant beat em for $100ish.

 

gotta part #?

 

LS7 lefter set - GM part number - 12499225 - $99.74 + S+H at Scoggin Dickey or GM parts direct.

 

Thanks guys I will get a set of LS7 lifters then.

 

I am also going to be putting some new lifters in my LT1. So if I am reading this correctly, stock lifters from an LS7 will fit in my stock LT1?

 

yes that is correct but i am not sure if they are actually an improvement, why are you replacing them?

 

I am doing a roller rocker upgrade and I am doing it once the right way. I have all new springs, retainers, locks, seals, rockers, pushrods, guideplates, studs and just about everything needed except lifters. I figure with 112,000 on the clock, it might be some safe insurance.

 

Yes the will

 

How are the LS7 lifters different from other LSx lifters?

 

Also curious...

 

ls7's are the replacement lifters now for all lsx engines

and get the cadillac racing lifters... they are only $200 and they are better than everything already mentioned here.