AFR heads

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Sep 13, 2009 | 11:36 PM

sspower23

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From: San francisco, California

AFR heads

LS1 eninge, 228 cam .580 lift-112lsa. Whats the best AFR heads to flow with this cam? 205s, 225s or 235s?

Sep 14, 2009 | 02:02 AM

99 Blue Bird

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From: CALI 707

Quote:

Originally Posted by sspower23

LS1 eninge, 228 cam .580 lift-112lsa. Whats the best AFR heads to flow with this cam? 205s, 225s or 235s?

i could not tell you man. i would like to know as well. but is there any reason your switching from the prc heads? cuz the ls6 stg 2.5 have a higher intake flow but the exhaust flow is better on the afr's the 205's that is. sorry this is a bit off topic but im lookin into buyin one of the two sets and wanted to know if the prc heads are just garbage since your thinkin of switchin over.

Sep 14, 2009 | 04:46 AM

vettenuts

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From: Little Rhody

205's. Two suggestions, talk to Tony and ask Tony about his custom chamber work. No modifications to the intake port but higher flow.

Sep 14, 2009 | 09:55 AM

Phil'sC5vette

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I have 205s for my 228R set up
See sign for numbers

Sep 14, 2009 | 05:30 PM

TransAmcoupe98

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From: Winchester, TN

205's. You need a close to stock runner size to maintain air velocity in low rmp's. The 205's actually improve MPG as well. Your 225+ runner sizes are for bigger c.i applications.

Sep 14, 2009 | 05:58 PM

vettenuts

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From: Little Rhody

Thinner gasket will help too, but you need to watch compression in CA. Again, questions that Tony can definitely answer for you.

Sep 14, 2009 | 07:03 PM

hammertime

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From: Smithton, IL

Quote:

Originally Posted by vettenuts

Thinner gasket will help too, but you need to watch compression in CA. Again, questions that Tony can definitely answer for you.

Good point, but since the OP has LT's, an ORY and is running a 228 cam, my guess is he must not be smogging the car or has 'connections'.

I assume you are referring to NOx?