When is AFR going to release a composite intake manifold for the LS?
04-20-2011, 10:29 AM
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When is AFR going to release a composite intake manifold for the LS? If companies keep coming out with cool stuff for this motor, ill never get it done.........................never. 
Any word on when or if AFR is releasing a composite intake for our motors. Eric L
Any word on when or if AFR is releasing a composite intake for our motors. Eric L 
04-20-2011, 10:55 AM
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Other than the pounds there's not much value in plastic.
Personally I like a manifold that can survive one backfire.
I measured my aluminum intake temp last month (?) and
it was only 110F or so, in 80 degree weather. With air
gap and a dry manifold it doesn't draw that much heat
up. And heat soak causing the air to warm up, at 500+
CFM WOT, is a myth if you do the calculations. Even if
you assume a much, much hotter wall than I measure.
Personally I like a manifold that can survive one backfire.
I measured my aluminum intake temp last month (?) and
it was only 110F or so, in 80 degree weather. With air
gap and a dry manifold it doesn't draw that much heat
up. And heat soak causing the air to warm up, at 500+
CFM WOT, is a myth if you do the calculations. Even if
you assume a much, much hotter wall than I measure.
04-20-2011, 11:20 AM
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I do agree on the great heat transfer properties of aluminum, detached plenum intake manifolds. However, port design also plays a part. In a couple of tests I have read, on a dyno (where in my opinion heat transfer dosent play as important of a roll) the AFR intake showed favorable gains over the SBC VIC JR. I just wonder how an LS version would fare against the L92 Victor/Super victor im looking at purchasing. Eric L
