Richard@WCCH

iTrader: (3)

We're guaging interest in providing a CNC ported Edelbrock head for the 5.3l engines. Some of the specs are 2.00"/1.57" valve sizes, 200cc/81cc runner sizes. The chamber sizes will end up at 58-60cc. Peak airflow will be around 275-280cfm on the intake ports and 210cfm on the exhaust ports. The chambers are designed to fit the smaller 3.780" bore diameters. We feel these heads will make a nice performance increase and add durability especially for FI applications. The heads are made with a thick deck for a better head gasket seal than the factory heads. We're about a month away from having heads machined and ready for sale. Pricing hasn't been established yet, but my guess is that it will range from $1950.00-$2150.00 depenging on spring choice.
Feel free to PM or call us with any questions.

Richard

LightFighter

iTrader: (1)

are these better than the LS6/ LS2 heads we have on our motors now?

Richard@WCCH

iTrader: (3)

We're compliling flow data on the 243 heads on a 3.780" bore. I'll post comparisons when the testing is done. Runner cross sections will be a bit smaller than the LS6 intake ports and the exhaust ports should show better average flow than the 243 heads.

Richard

LightFighter

iTrader: (1)

okay thanks for the info

silverGXP

Is there any more info on this?

BADDLS1SS

iTrader: (22)

Again... were gonna have to put cams in these things to really see the bennefit from a higher flow set of heads... there might be the initial increase But witha .480" lift stock cam.... these heads I feel would be a moot point other than maybe 20 hp. I guess im not willing to spend 2 grand on 20 hp... Maybe 40+ hp you would see with adition ofa cam that will accent these heads.

Area47

what he said
heads are cool and all, but having a cam that is a bit on the anemic side of the gm parts world {i think the cobalt has more aggressive cams}

i can see a good gain from heads AND cam, but like he said, dropping 2k on heads for 20 hp isn't worth it.

06 SS

No interest from me, I would rather spend (a lot) less cash on having the 243 castings worked over if I ever needed it. The engine seems to be cam limited at the present time and I would bet the intake/exhaust bottleneck would be next, heads would be the very last thing I would do on this car. No point in touching them unless you wanted to wring out every single pony possible after swapping cams (and why do so in a front driver? If you want max performance, start with a different platform.)

eddiemoney

iTrader: (2)

And do these heads require computer work, disable of DoD???

For $2000 I better get an edlebrock associate at my door to install them

Kazmaniac

No thanks - wouldn't drop $2K in the MCSS, especially on the heads.

Platform is stout, but like the guys said, we need a non DoD cam.

06MonteSS

my DOD is already disabled, can I try?? ooh, ooh, me, me.. LOL

nah, too rich for my blood...

kissmyss03

iTrader: (1)

stupid amount of money for a head. you can get heads for like 500-600 for a f body

Stang's Bane

iTrader: (22)

Are you smoking crack?????? Mybe used. FWIW, these are the same cores as the castings for a f-body. Just optimized for a smaller bore.

kissmyss03

iTrader: (1)

i meant 1500-1600 lol

joeilesGXP

In my constant need for more HP I had asked a well known speed shop in my area about head work. There response........ you need a real cam!! all the head work in the world would not help. give me heads and a new cam and you can count me in. 2K for 20hp??

Stang's Bane

iTrader: (22)

I disagree, by just doing heads you will gain power. Not really that much, probably 20 hp, but you will gain power. A cam will really let them shine though.