. Get the 243. 
ls6 heads---243 and the 241's
Thread Starter
TECH Apprentice
Joined: Oct 2005
Posts: 384
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From: florida
ls6 heads---243 and the 241's What is the difference in the 241 and the 243 heads?Both are suppose to be ls6 heads(they both have the triangle tool mark) I have a chance to buy either set and just need to know which ones are better for the money?
Nothing special about the 241's, they just have smoother ports than the 853 heads. I just gave a set of 241's away because I couldn't sell them and get enough to cover shipping cost out of them.
Thread Starter
TECH Apprentice
Joined: Oct 2005
Posts: 384
Likes: 0
From: florida
Thanks fellas !
"""243s also are found on the LS2 motors, different valves / springs but same casting. So availabilityhas improved a lot"""
-------- Matter of fact, they came off a ls2. Would there be any issues using them on a cammed 'ls1'? Im gathering part for the ls1 swap, figure i could do it cheaper putting parts together.Thanks again
"""243s also are found on the LS2 motors, different valves / springs but same casting. So availabilityhas improved a lot"""
-------- Matter of fact, they came off a ls2. Would there be any issues using them on a cammed 'ls1'? Im gathering part for the ls1 swap, figure i could do it cheaper putting parts together.Thanks again
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GM started putting 243s on more engines lately, I've seen them on a stock 4.8L truck engine. Not sure if that is the exact same valves/springs as the 243s on the LS2 but I wouldn't doubt it.
Like stated above, the 241s never went on the LS6 and 243s always flow better.
Like stated above, the 241s never went on the LS6 and 243s always flow better.
GM started putting 243s on more engines lately, I've seen them on a stock 4.8L truck engine. Not sure if that is the exact same valves/springs as the 243s on the LS2 but I wouldn't doubt it.
Like stated above, the 241s never went on the LS6 and 243s always flow better.
Like stated above, the 241s never went on the LS6 and 243s always flow better.
Yeah I was thinking they were the motor with the different heads. Just wasnt to sure on that. I see that the 317 heads are being used on alot of setups now, is there any reasoning behind this? I've seen a few FI cars with them, do they work better with FI since they have more CCs?
