AFR heads??

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Jan 20, 2005 | 10:53 PM

jcdurst1

Thread Starter

3rd Gear

Joined: Jan 2005

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AFR heads??

I getting ready to buy some AFR heads & cam for my C5, what kind of RWHP should I expect from an engine with a cold air intake, GM LS6 manifold, Dynatech Supermaxx headers & corsa cat back.

Jan 20, 2005 | 11:13 PM

Goody

Le Mans Master

Joined: Oct 2000

Posts: 6,362

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From: Oak Harbor WA

There are many posts covering this set of mods: some of the signatures of members here match that list.

Need cam specs for a more accurate guess.
Need a good tune to maximize benefits of all the changes.

400+

Jan 20, 2005 | 11:25 PM

Black01Z

Racer

Joined: Jun 2004

Posts: 256

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From: Colorado Springs CO

i agree. depends on a lot. 400-440rwhp i'd guess on 93 octane. of course depending on the cam and tune, and cats/no cats.

check my sig for 91 octane.

Jan 23, 2005 | 01:20 AM

mdhmi

Team Owner

Joined: Jul 2003

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From: Detroit

Really depends on cam and CR. Keep us posted on your results.

Mark

Jan 23, 2005 | 01:11 PM

blktie8

Drifting

Joined: Sep 2002

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From: Howell MI.

Et Performance

Quote:

Originally Posted by mdhmi

Really depends on cam and CR. Keep us posted on your results.

Mark

I thought you had ET PERFORMANCE heads Mark?
I do, and they are coming out in Feburary with some new stuff 225 to 255 intake port volume.
I'll be running the 225 soon
John Sr. blktie8

Jan 23, 2005 | 01:25 PM

Irish Whiskey

Melting Slicks

Joined: Sep 2002

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Quote:

Originally Posted by blktie8

I thought you had ET PERFORMANCE heads Mark?
I do, and they are coming out in Feburary with some new stuff 225 to 255 intake port volume.
I'll be running the 225 soon
John Sr. blktie8

At Dave &Busters got caught over my head in discussion about ET Performance heads -5.3L ones. I thought they looked pretty good but was dismayed to hear negative remarks about them. I live in the land of "a little knowledge is a dangerous thing."

Jan 23, 2005 | 01:47 PM

mdhmi

Team Owner

Joined: Jul 2003

Posts: 20,474

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From: Detroit

I'm still running stock LS1 heads. I was very close to doing the ET LS1 heads last season, but, decided to hold off until I got my setup dialed in. Now that it's dialed in (I hope) there are more head options. The AFR 205's look very good, but, I'm going to hold out to see what results people have with the 225's. I'm also hoping that the release of the AFR's will bring down the cost of worked over 6.0L heads - which I think would also be a decent option for my blower setup.

Cheers,

Mark

Jan 23, 2005 | 02:20 PM

Bink

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Joined: Mar 2002

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Cruise-In V Veteran

St. Jude Donor '09

Guys - the LS7 heads are supposed to flow 370-ish STOCK. Based on the C5R head design with similar intake port and same 12* valve angle. You may want to wait