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Generation III Internal Engine 1997-2006 LS1 | LS6
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59cc or 64cc heads ?

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Old May 6, 2006 | 07:09 PM
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Default 59cc or 64cc heads ?
2002 A4 with a TR CheaTR cam and full boltons and im between these 2 patriot ls6 stage 2 heads

Assy. 2.02"/1.57"/59cc
Assy. 2.02"/1.57"/64cc

car has ported stock 241 heads right now
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Old May 6, 2006 | 07:54 PM
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your ported stockers should be fine..what valves do you have in stockers? the 64cc is octane freindly
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Old May 6, 2006 | 08:04 PM
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they are just ported with stock valves so they are basicllay stock and need to be upgraded
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Old May 6, 2006 | 08:08 PM
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save money if you upgrade your port job, then get new stainless valves rather than buying a whole new set of heads. if money isnt issue then get AFR Stage 2 64cc
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Old May 6, 2006 | 09:10 PM
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it will cost me to get the valves and double springs and thats why im getting the patriots with the gold springs and bigger valves but not sure which cc and what pushrod size need
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Old May 6, 2006 | 09:26 PM
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Go with the 59 cc's and check the pushrod length and you will be set.
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Old May 6, 2006 | 09:51 PM
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It depends on what your plans are for the car personally i would go with the 64's.
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Old May 6, 2006 | 11:54 PM
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Originally Posted by 8GTOKLR
the 64cc is octane freindly
I had 59cc ran great no problems at all, used normal 93 octane. 59cc = 11:1 CR 64cc = 10.6:1. I'd personally go 62cc or 59cc for N/A application.
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Old May 7, 2006 | 01:26 AM
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11.35 SCR is the compression you'll have with 59 cc

But looking at your sig, $$$ shouldn't be a problem for you (unless you're a car dealer), so I suggest to get AFR milled to specs with the size gasket he was running.
PM him, he'll set you up for the best CheaTR combo.
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Old May 7, 2006 | 06:12 AM
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My AFRs are milled to 63cc. Close to the line, but nothing to have to worry about
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Old May 7, 2006 | 06:20 AM
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Originally Posted by MKS
2002 A4 with a TR CheaTR cam and full boltons and im between these 2 patriot ls6 stage 2 heads

Assy. 2.02"/1.57"/59cc
Assy. 2.02"/1.57"/64cc

car has ported stock 241 heads right now
You need to find out the intake closing point at .006" on your cam and then figure your dynamic compression. Keep it around 8.5/1 and your good.
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Old May 7, 2006 | 08:55 AM
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Thanks alot guys for the help im calling tomorrow to order the 59cc
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Old May 7, 2006 | 08:56 AM
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Originally Posted by Ksett
Go with the 59 cc's and check the pushrod length and you will be set.
do you know what size pushrods with with the 2.02 59cc
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Old May 7, 2006 | 09:31 AM
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I would go 7.425
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Old May 7, 2006 | 10:04 AM
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59cc is the way.
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Old May 7, 2006 | 03:32 PM
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Thanks again
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