| Re: Aluminum intake manifold-opinions.. [message #326184 is a reply to message #326163] |
Mon, 20 November 2017 09:13   |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
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I have the Gary Rockwell aluminum intake as sold by Applied a few years back. I installed it myself and got the ports sealed well using the Dick Paterson gaskets and SS block-off plates, but I didn't do so well with the end wall seal and had some oil leaks at the front one.
I replaced it for the usual reasons (lighter weight, no exhaust crossovers, no crack like my old one was starting to do, Cool factor, etc). I really didn't expect a performance increase since it is basically a copy of the cast iron manifold made of aluminum, but it may have helped with vapor lock issues (ongoing with this coach no matter what I do to it, it seems).
I recently had my heads replaced and my mechanic did the installation and this time, there are no oil leaks. When I went to get gaskets for it, I talked to Dick Paterson who told me to go with his gaskets due to the minimal thickness of them. The thinner gaskets allow the manifold to sit deeper into the engine allowing the ports to line up better. Made sense to me, so that's what I did.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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