BrntWS6

iTrader: (7)

^^^ what's the power difference between your LS6 and as cast heads?

windmill

iTrader: (4)

with using the as cast heads vs the reg 799 heads how much more ptv clearance do they give? just wondering then i could have more compression cause I could mill them more...

Sales3@Texas-Speed

iTrader: (2)

Between our stage 2.5 LS6 heads and the AsCast you can typically expect around 10 rwhp plus the benefits of going to the aftermarket casting. Such as a 3/4" deck surface for better clamping force and a raised valve cover rail in case you would like to run aftermarket rockers and don't want to run a spacer.

They're comparable to our stage 2.5 LS6 heads with about .010 more clearance on the exhaust. Though we do have small chambers that start at 62cc and we can mill down from there.

Lonnie

COSPEED2

iTrader: (7)

Milling the head will effect the flow.

Sales3@Texas-Speed

iTrader: (2)

Correct. Though our power figures and flow numbers are based off of the standard 62cc chambers. The gain from milling typically outweighs any loss in flow.

Lonnie

COSPEED2

iTrader: (7)

Up to a certain point at least.

speedtigger

iTrader: (16)

Performance for dollar, I still think these are THE BEST deal out there:
http://texas-speed.com/p-1391-prc-st...ted-heads.aspx

$1199 for 313 CFM. Hell of a deal.

Sales3@Texas-Speed

iTrader: (2)

Also, just an FYI, we were able to get over 300 castings of new 5.3 heads and can offer our stage 2.5 5.3 heads out right again and no longer require customer cores.

Lonnie

windmill

iTrader: (4)

Thanks Lonnie for the info.

possessedsaint

well to throw a wrench in the equation ....im thinkin of now doing an lq4 swap....so ill have to take that into consideration with the heads

COSPEED2

iTrader: (7)

Unless you use an over 600lift cam then just like trick flow you recommend roller rockers. No one says that though.

COSPEED2

iTrader: (7)

You are reading too much on the internet. Seriously just get something and go with it. The more you read the less you may learn.

dr_whigham

iTrader: (49)

Reading on the Internet is what built my first car.

Having said that, I see you're on a budget, like most of us are. Honestly OP, the first set of used (good used) aftermarket heads you run across on here I'd scoop them up and have a cam spec'd around them. That's what I did.

I already had the cam in the closet, but the heads I just so happened to come across (AFR 205's) worked well with them. It was custom spec'd from Ed Curtis.

Quick Ranger

iTrader: (2)

Tigger- Are you running these heads with the stock valves using the nitrous? They aren't a bad deal, just add some BTR springs.

possessedsaint

id rather gain as much info as i can before the build.

SoFla01SSLookinstok

I mean, you gotta understand what your reading about, but you can learn a lot on the net. I mean just doing research myself i'm so glad I went with the PRC 215 heads. I was about to go for the stage 2.5 or stage 3 LS6 heads. For a bit more I got the 215's. I'm surprised there are'nt more vouching for the PRC's. They are awesome heads!

COSPEED2

iTrader: (7)

Quite a few people including reputable shops around the country dont post on the net. You can also get lopsided experience as well. Hence you shouldn't always believe all of it.

speedtigger

iTrader: (16)

Yes. Those are the heads that I am using. I just think they are one of the best bangs for the buck out there.

SoFla01SSLookinstok

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