ls2 heads

[01tao6gto]

how much gain will you get by putting ls2 heads on a ls1

[bills98ta]

You will drop compression... If you plan on boost, it would work well. Be better off to port what you have. Heres a neat head spec link !

http://www.smokemup.com/tech/ls1.php

I went with the 5.3 heads & had big valves installed with a port job.

[MikeMoss]

ls2 heads are the 243 castings which is the same thing as the ls6 head but the ls2 didnt come with the sodium filled valves.

241's have 66.67cc combustion chambers
and
243's have 64.45cc combustion chambers

so your compression will actually go up from like 10.1:1 to like 10.5:1.

Just unported 243 usually make almost 20hp over the 241's.

[WhatUpWhatUp]

how much hp and tq if the ls2 heads were fully ported and polished over stock ls1(241's) ?

[INMY01TA]

You will drop compression... If you plan on boost, it would work well. Be better off to port what you have.

[WhatUpWhatUp]

so should i pick up some 243's fullly ported and polished for $400-$450 ?

[cfgioja]

are they just the heads or do they have the valves and springs in them?

[WhatUpWhatUp]

are they just the heads or do they have the valves and springs in them?

nope their just the heads

[cfgioja]

I found mine for that price, the guy never picked them up from the machine shop after 6 months and had dual springs installed and reseated valves.

From what I have been seeing 400 is not too bad of a price for just heads especially if the port job was good, that can get expensive, just think about the cost of valves and springs and go from there.

[WhatUpWhatUp]

okay thanks alot! i better hurry on them before their gone then

[KC&97TA]

nope their just the heads

buy them and send them to Total Engine Airflow for a stage 2, I did, 225cc runners, 61cc chambers, they flow better than TFS 215's. You'll be happy with those, add a cam and you'll be set into the 400+ rwhp club

[WhatUpWhatUp]

i would love to do that but thats too much for my pockets.

you dont think i'll be able to hit the 400hp mark with 243's full ported and a TorquerV2 ?