Blownz28man

iTrader: (2)

I was just curious what is the big deal on the L92 heads that scoggin Dickies sales..They have sets that arent cnc'd for 500 each or that have been cnc'd for like 600ea. Whats the big deal? What part is CNC'd?chambers? Is it worth the extra $$??Thanks

Sales2@Texas-speed

iTrader: (5)

We've flow tested those heads as well as the prc l92 heads next to each other. Both sell for about 1000-1100 for the pair fully cnc ported. Our PRC L92 heads gained 25rwhp over a stock l92 head on our dyno test engine! Pay a couple hundred extra bucks & get the prc cnc ported heads, you'll get better p/v, better air flow, & better power than the stock l92 head!

What are you thinking about installing this thing on?

8ByGoat

iTrader: (2)

Only if you are running 402+ cubic inches.

TT LS2 1969 Camaro

How much more airflow on the exhaust side is gained from the CNC heads vs. the stock L92 head?

edcmat-l1

iTrader: (10)

Talk to Richard @ West Coast Cylinder Heads. Hes probably got the best CNC program for the L92s right now. Def one of the best exhaust ports. They're more expensive but worth the money. And good on a 6.0 too. They're a board sponsor too.

Blownz28man

iTrader: (2)

Thanks guys..Just was really looking at if the scoggin dickies heads were really worth getting the cnc version.. I'm really open for any cylinder head company..as long as the price is right and there good head.

GTO 3447

Would you say go with the ported set on a 364 LS2 4 inch bore with a 228 cam?

Not to hijack the thread but I cubes has a lot to do with it.

WKMCD

iTrader: (2)

SS Enforcer

I have a set of Richards heads on mine and it makes good power to 6500 rpm. They look like a work of art.

We are putting the higher rev range down to increased exhaust flow. I don't think we have nailed it with the right cam yet.

cheers

Jason 98 TA

iTrader: (4)

You might search under my user name on l92 heads, we have tons of dyno data from engine dyno testing. We've produced past the 560rwhp mark with a m6 f-body running our l92 heads on a 418! I've even installed l92 ported heads on my stock cam a6 vette that made over 400rwhp with no cam!

bg-sdpc

iTrader: (4)

Here is the dyno comparison between the "As Cast" heads and the CNC heads.

OnyxSilveradoSS

iTrader: (4)

Nice graph. Looks like things are leveling out around 6K, which is fine for my application.
did anyone say if its worth the extra $800 bucks for the CNC, I know for max out it is but for a DD, ocasional track guy??? Or even more so for the budget limited guy

Spectre86

iTrader: (42)

Didnt realized the L92s were such a nice head still I started reading on them. Seems like the downfall is lack of intakemanifold choices. Does anyone know if/when FAST or any other companies will have one out?

firefighting1101

iTrader: (48)

the lack of the intake choices and how hard it is to spec a cam for them...

cbrracer

iTrader: (10)

Has anyone read the GMHP article where Golen built a 402 w/ L92 heads? Close to 600hp.
Golen did their own work on the heads. Here's the link.
http://www.gmhightechperformance.com...rse/index.html
Enjoy.
Don

Stang's Bane

iTrader: (22)

Just in case any one wasn't clear on this. The CNC L92 heads that SDPC sells are the PRC CNC heads.

WKMCD

iTrader: (2)

Those are engine dyno numbers. I do that with a cam with much less duration and on straight pump gas.

https://ls1tech.com/forums/showthrea...314&highlight=

Spectre86

iTrader: (42)

hmmmm. why is it hard to spec a cam for them?


has anyone heard when/if FAST is going to make one for the l92?

Hans Grüber

iTrader: (2)

Are you sure? Because they also sell the GMPP CNC L92 heads.

Sales2@Texas-speed

iTrader: (5)

Sorry to steal your thunder. They sell GMPP's CNC L92 heads more often than they sell the PRC's. But they can get anyone interested in the PRC heads setup too!