Ordered AFR 205s
Thread Starter
Drifting
Joined: Jun 2002
Posts: 1,682
Likes: 3
Ordered AFR 205s
I just ordered all the parts for my setup and my car goes into the shop August 4th for the head/cam swap. My goal was to keep as much refinement as possible but make good power. I decided to use the Thunder Racing CheaTR cam (designed to run with stock manifolds).
The cam is more aggressive than it looks because of the ramp rates ect... Should be worth 15-20 over an 02Z06 cam. The negative 10 overlap also will make it idle like stock. - Perfect sleeper!
AFR 205s milled .035 to achieve 11.1 compression
Cam - 214/230 .601 / .578 117 LSA (similar to the C6Z06 cam)
Honker Intake
Any guesses on the HP????
A guy on ls1tech made 394 with this setup on an A4 LS1...
The cam is more aggressive than it looks because of the ramp rates ect... Should be worth 15-20 over an 02Z06 cam. The negative 10 overlap also will make it idle like stock. - Perfect sleeper!
AFR 205s milled .035 to achieve 11.1 compression
Cam - 214/230 .601 / .578 117 LSA (similar to the C6Z06 cam)
Honker Intake
Any guesses on the HP????
A guy on ls1tech made 394 with this setup on an A4 LS1...
Safety Car
Joined: Dec 1999
Posts: 4,148
Likes: 5
From: Roxbury NJ
I ran the 205s on my C5 and loved them. Great heads. Sounds like a great setup.
You're having them milled .035", then putting them on an LS2? That will yield WAY over 11:1. Mine were milled .024" and they would have put my LS2 at 11.4:1, too high for my needs, so I sold them.
You're having them milled .035", then putting them on an LS2? That will yield WAY over 11:1. Mine were milled .024" and they would have put my LS2 at 11.4:1, too high for my needs, so I sold them.
Thread Starter
Drifting
Joined: Jun 2002
Posts: 1,682
Likes: 3
Originally Posted by Flareside
I ran the 205s on my C5 and loved them. Great heads. Sounds like a great setup.
You're having them milled .035", then putting them on an LS2? That will yield WAY over 11:1. Mine were milled .024" and they would have put my LS2 at 11.4:1, too high for my needs, so I sold them.
You're having them milled .035", then putting them on an LS2? That will yield WAY over 11:1. Mine were milled .024" and they would have put my LS2 at 11.4:1, too high for my needs, so I sold them.
Safety Car
Joined: Dec 1999
Posts: 4,148
Likes: 5
From: Roxbury NJ
Originally Posted by xstang
Were you running the .040 gasket or the stock gasket?
The stock LS2 heads at 65cc, along with the stock .054 gasket will yield around 10.9:1 (this is the stock set up). Milll the AFR .035, and you'll be around 59cc. That's real tight for a street LS2, if that's what your planning. Without knowing the specifics of your combo, I'd suspect that you'll be around 11.8:1 with the stock gaskets, and higher with an .040 gasket.
Drifting
Joined: Jun 2005
Posts: 1,824
Likes: 1
From: Middleboro Massachusetts
Originally Posted by xstang
I just ordered all the parts for my setup and my car goes into the shop August 4th for the head/cam swap. My goal was to keep as much refinement as possible but make good power. I decided to use the Thunder Racing CheaTR cam (designed to run with stock manifolds).
The cam is more aggressive than it looks because of the ramp rates ect... Should be worth 15-20 over an 02Z06 cam. The negative 10 overlap also will make it idle like stock. - Perfect sleeper!
AFR 205s milled .035 to achieve 11.1 compression
Cam - 214/230 .601 / .578 117 LSA (similar to the C6Z06 cam)
Honker Intake
Any guesses on the HP????
A guy on ls1tech made 394 with this setup on an A4 LS1...
The cam is more aggressive than it looks because of the ramp rates ect... Should be worth 15-20 over an 02Z06 cam. The negative 10 overlap also will make it idle like stock. - Perfect sleeper!
AFR 205s milled .035 to achieve 11.1 compression
Cam - 214/230 .601 / .578 117 LSA (similar to the C6Z06 cam)
Honker Intake
Any guesses on the HP????
A guy on ls1tech made 394 with this setup on an A4 LS1...
Safety Car
Joined: Dec 1999
Posts: 4,148
Likes: 5
From: Roxbury NJ
Originally Posted by xstang
Can anyone tell me what I need the heads milled to get to 11:1?
You already know that the stock engine is 10.9 using a .054 gasket and 65 cc heads.
Stock AFRs at 66cc and a Cometic .040" gasket will put you very close to 11.1, maybe a little over.
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Thread Starter
Drifting
Joined: Jun 2002
Posts: 1,682
Likes: 3
Sounds about right, I just figured it... My math may be off but this is what I did....
Stock CR is 10.9/1 at 64.45 ccs
The AFR heads are 66 cc
1.55 difference in cc size
1.55 * .006 = .0093 will get me back to 10:9/1
Using the Cometic .40 gasket or milling .0141 should put me right at 11:1
Stock CR is 10.9/1 at 64.45 ccs
The AFR heads are 66 cc
1.55 difference in cc size
1.55 * .006 = .0093 will get me back to 10:9/1
Using the Cometic .40 gasket or milling .0141 should put me right at 11:1
