Stick with the 241s or go 243 heads?
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Stick with the 241s or go 243 heads? So long story short I blew my forged 348 up a few months ago. I'm building another ls1 now. I need to put some money in the heads due to them being slightly damaged. Nothing major.
should I switch it up? My 241s are ported but I didn't get any flow numbers when I bought them. I was thinking of buying the texas speed ported 243 heads.
Would I really see much of a power gain on a boosted set up? I made 675whp with the 241s and then ran out of turbo.
should I switch it up? My 241s are ported but I didn't get any flow numbers when I bought them. I was thinking of buying the texas speed ported 243 heads.
Would I really see much of a power gain on a boosted set up? I made 675whp with the 241s and then ran out of turbo.
Thread Starter
10 Second Club
iTrader: (22)
Joined: Mar 2006
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Likes: 2
From: Northwest side of Chicago
My other option would be put a couple hundred into my current 241s and save alittle cash. I guess my question would be are 317 or 243 heads that much better than ported 241s? Will I really see an increase in power?
Its a matter of lowered compression more than anything, the 317s drop you about a half point. With FI you dont need to have awesome flowing heads to make gobs of power either
i wouldnt even consider lowering compression if its 10:1 or less. No reason to go lower than that with todays technology. I vote to keep the 241s myself, you wont be head limited anyway
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I also ran 317s on my 6.0L up to 18lbs, completely stock motor with a cam. I dont suggest EVER going below 9.5:1 compression though, high compression turbo motors are the best of both worlds
