1969 RA IV intake on standard 400 - Pontiac GTO Forum
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post #1 of 4 (permalink) Old 05-02-2016, 07:43 PM Thread Starter
 
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1969 RA IV intake on standard 400

Hello

More for looks, I'm considering a RA IV intake on my stock 1969 GTO 400. Making a period correct run at a RA look.

Will the intake match up with the heads ok ?

Thanks for any help !!
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post #2 of 4 (permalink) Old 05-03-2016, 08:59 AM
 
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The ports are slightly taller, but will work just fine. I ran one on a 455 bracket engine, with the 13, 16, 62, & 64 type, D-port heads. Didn't really run any quicker, but the intake was lots lighter, and cooler than the stock iron, since I did not use an exhaust heat crossover.

Obviously will work a little better with a good gasket match of heads and intake. But, not necessary. Don't know exactly how much power difference there would be. ? Probably never notice any difference, unless you had dyno or drag strip tests to measure it.
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post #3 of 4 (permalink) Old 05-03-2016, 10:29 AM
 
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For what a nice original '69 RAIV intake brings in the marketplace, one could have a pair of Dport heads professionally ported along with 16 new one piece stainless valves, and a quality valve job. Just throw this out, as have owned a few '69 RAIV intakes, and the JoeParts repro RAIV intake is a piece, have had several friends that bought the repro and were not happy at all with the misallignment of the ports and the plenum depth.
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post #4 of 4 (permalink) Old 05-04-2016, 02:44 AM Thread Starter
 
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Thanks for the replies.
I'll check the alignment and see how things go.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance

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