View Poll Results: Would you buy Small cube L92 heads?
Voters: 50. You may not vote on this poll
Small Cube L92 Heads?
Nope...not until someone proves that they can make better numbers than a cathedral head given our typical RPM ranges. The L92s out now flow some great numbers, but don't do much on a dyno with those numbers. Maybe if people get some better cams out for them...
Originally Posted by MeentSS02
Nope...not until someone proves that they can make better numbers than a cathedral head given our typical RPM ranges. The L92s out now flow some great numbers, but don't do much on a dyno with those numbers. Maybe if people get some better cams out for them...
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TECH Fanatic
Joined: Sep 2003
Posts: 1,265
Likes: 4
From: St. Clair Shores Mi.
If they can make the adjustments and still sell them for a similar price it should force the aftermarket to drop their prices on the cathedral port Heads.
So It is a good thing that may work out for all of us.
So It is a good thing that may work out for all of us.
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I would be interested, and from what I've read, the biggest issue is getting the combustion chambers down in size by milling the heads. Look at everyone who runs and makes good power with the AFR heads, almost all of them have milled the heads to bump up the compression ratio, both static and dynamic.
I think dynamic compression ratio is too frequently overlooked when it comes to making power.
I think dynamic compression ratio is too frequently overlooked when it comes to making power.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Well just looking at stock L92s they lack in the exhaust area a lot. I would be curious to test them with a cam like a 231/242 .643/.610 110+4
Either that or port the exhaust only to 75/80% of intake. and shorten the split with less exhaust bias.
Either that or port the exhaust only to 75/80% of intake. and shorten the split with less exhaust bias.
If these heads were priced inexpenisively like the bigger bore heads, I would pick them up quick!! And a new cam to go with it.
I just can't justify buying cylinder heads for over 2g's. If I could get an assebled set like these for under a grand..............I'd be all over than like stink on ****!!!
I just can't justify buying cylinder heads for over 2g's. If I could get an assebled set like these for under a grand..............I'd be all over than like stink on ****!!!
I believe I will just stay with proven parts. Big ports on a small cube motor=beatdowns by small port small cube motor. Those heads are ideal for Forced Induction motors were port velocity doesnt matter. Until I see a solid combination put together, and not a dyno queen, i'll keep my money in the wifes purse. 
Id be afraid of losing low end with those large runners and smaller valves. Would be nice to be able to use the l76 intake though.
If good numbers started rolling in, it would certainly grab my attention.
If good numbers started rolling in, it would certainly grab my attention.
12 Second Club
Joined: Feb 2007
Posts: 150
Likes: 0
From: Fairfield, Cali
GMHTP says its suppose to be 44% more hp than the LS-6 heads.. They already have the heads for big bore engines like the LS-2 or LS-7.. If that is the case and flow more than the LS-6.. Save your money and just wait..
Originally Posted by WARP211
GMHTP says its suppose to be 44% more hp than the LS-6 heads.. They already have the heads for big bore engines like the LS-2 or LS-7.. If that is the case and flow more than the LS-6.. Save your money and just wait..
Originally Posted by bluenyghthawk
l92 heads only run about 850 bux for the pair assembled from gm ive call but they wont fit anything smaller then a 6.0
