243 vs L92
Thread Starter
Staging Lane
Joined: Feb 2010
Posts: 61
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243 vs L92 So I have been running a set of done up 243 heads flow 320 cfm on my ls1, now I'm building a 402ci ls2 with a 88mil turbo and wanted to get some input if it's worth going to a l92 style head or is it not worth it.
The stock l92s flow about the same as your worked 243s. I guess the only advantage would be the larger intake valves,(2.16). Then again if you port those l92s you'll be ahead of the game all around. I have stock l92s on my 402ci with an 88mm Turbo, no dyno numbers yet tho. Cam is 230 238.
Instead of spending the money on new intake and valvetrain stuff, you may be better off spending the money on a head with an aftermarket casting. I guess it depends on how hard you're trying to push the motor.
