417LSX

I just bought a stock 98 ls1 and am looking to put some ported ls6 heads on it! My question is will the 243 or 799 casting heads from a ls2 work on my stock ls1. I have been told the combustion chambers were different and that they wouldnt work!

thanks,

Josh

NasbaGoat

i have LS2 243's on my LS1 and am very happy with them.... i however am very uneducated when it comes to 799's

Detoxx03

iTrader: (14)

They should work

417LSX

A guy is trying to sell me a set of 799 ls2 heads! They have some port work but just wanted to make sure they will fit!

Josh

thunderstruck507

iTrader: (18)

799 are the same thing as 243 just different casting facility, with port work they should be a very good upgrade

ringram

... ls6 valves are different..

417LSX

Will I need to change anything or will these just bolt on up and go? Im looking at doing a custom grind cam as well!

Josh

'02 WS6

iTrader: (73)

I ran 799s (TSP LS6 Stg 2) with my Pat G grind and loved it. They'll be fine. Get a port/valve/mill job on them and they'll flow like a champ.

brian_rs/ss

799's are essentialy the same thing as 243's. cast in different locations but they have the same chambers and ports.

these heads with a little work can be killer. my soon-to-be set up is going to be milled, pp'd, vj'd 799's with ls6 hollow/NaK valves and custom cam. hoping for around 440 rwhp. and this car is my DD so i'm leaving some on the table.

bww3588

iTrader: (49)

define "port work" its very very easy to make a set of heads flow worse if someone doesnt know what they are doing.

JonCR96Z

iTrader: (33)

799, 243, LS6, LS2. They are the same casting. Only an actual LS6 243 will have lightweight valves.

This info is probably posted on this board somewhere.s