355 at .600 is very respectable. 242cc intake runner 
what heads for 416 l92
I've got a set that will give you the best opportunity to do it.
https://ls1tech.com/forums/lsx-parts-sale/899912-new-box-all-pro-race-prepped-heads.html
I'll cut you a deal on them over the stated price
https://ls1tech.com/forums/lsx-parts-sale/899912-new-box-all-pro-race-prepped-heads.html
I'll cut you a deal on them over the stated price
TECH Enthusiast
Joined: Jan 2008
Posts: 625
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I've got a set that will give you the best opportunity to do it.
https://ls1tech.com/forums/showthread.php?t=899912
I'll cut you a deal on them over the stated price
https://ls1tech.com/forums/showthread.php?t=899912
I'll cut you a deal on them over the stated price
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11 Second Club
Joined: Oct 2005
Posts: 1,847
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From: Sandwich, IL
ETP LS7 heads for the 4.0 bore with an LS7 intake. With a nice size cam you should get some real nice numbers both on the dyno and at the track. Call Cary @ ETP and I guarantee you he'll recommend this setup over his 245 heads.
Aren't these heads for 4.125 in. and larger bores?
Same with these aren't they for 4.125 in. bore?
I was just checking these out and they don't seem to flow as much as the WCCH l92's especially on exhaust side. The WCCH l92's look like they have pretty impressive flow numbers. What do you guys think of the WCCH l92's, would they be a good choice?
I was just checking these out and they don't seem to flow as much as the WCCH l92's especially on exhaust side. The WCCH l92's look like they have pretty impressive flow numbers. What do you guys think of the WCCH l92's, would they be a good choice?
the tfs 235 will fit on the 4.065 bore. they use smallish valves and have small runners, and make tons of power. obviously bigger bore = more flow etc, but you will be hard pressed to find a better head.
the l92's are nice, but the l76 manifold is not (imo) and limits the head more than a FAST etc.
the l92's are nice, but the l76 manifold is not (imo) and limits the head more than a FAST etc.