Ls6/ls2 heads

[El Toro Loco]

okay so this might sound stupid. butwhat is the difference if any from the ls6and ls2 heads is one better than the other?

[mark21742]

they are both 243 castings, but the ls6 has lighter sodium filled valves....other than that I think they are the same

[shady milkman]

okay so this might sound stupid. butwhat is the difference if any from the ls6and ls2 heads is one better than the other?

they are both 243 castings, but the ls6 has lighter sodium filled valves....other than that I think they are the same

^ along with those lighter valves they springs are different and the stem of the valve is longer on the light weight valves ....you a shorter pushrod should be used for a ls6 with a stock base diameter ls1 or 2 cam.

[mark21742]

^ along with those lighter valves they springs are different and the stem of the valve is longer on the light weight valves ....you a shorter pushrod should be used for a ls6 with a stock base diameter ls1 or 2 cam.

I thought the springs were different, but wasn't sure

[El Toro Loco]

so i take it the ls6 heads are better

[mark21742]

so i take it the ls6 heads are better

if your going to up valves and springs beyond stock anyway, I'd just go for whichever head you can get cheaper.
I'd never do a head swap and leave the stock springs in it, even with stock cam I'd upgrade to comp 918's

[El Toro Loco]

yea heard good things about those 918's and seems to be popular on here.

[mark21742]

yea heard good things about those 918's and seems to be popular on here.

several years ago there were a few bad batch of them that were prone to breakage, but they fixed the problem and all of tge bad ones should have been out of circulation for a long time now.
they are cheap and very good. now they are rated upto .625" lift which covers probably 85-90% of the daily driven cams out there.
I run them

[El Toro Loco]

good info really appreciate it.