Bob,
Don't bother looking for a 350 Olds aluminum intake. The only possibility
is a 70 W31 Cutlass, and
they are priced up on the moon. Olds collectors are snatching them up to
build fake W31 cars to
sell on Barret-Jackson. The only choice is on 82-85 307 Olds motors with a
casting # 22504086.
This has large ports which will match your 403 pretty well. AVOID the
manifold for the 85-90 307,
casting # 22528212, as it is the small port version. That's as much as I
know.
Oh yes, avoid the aluminum intake used on the 78-79 Cadillac with the 350
PFI. To lose weight they
gutted the intake and left it with no runner length which means less low end
torque.
Gary Kosier
77PB w/500Cad
Newark, Ohio
--------------------------------------------------
From: "Bob Dunahugh"
Sent: Wednesday, December 14, 2016 10:35 AM
To:
Subject: [GMCnet] What Olds 350 engine had an aluminum intake manifold.
Would the 307 also work?
> Putting EFI on my 403. Not having much luck finding this manifold. Bob
> Dunahugh
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