Hello - Does anybody know if a intake for 364 cid will fit the 401 cid with slotted holes ? (I`m looking for a 3 duce intake for 401 cid but not easy to find).
Thanks Henning

You may be able to slot the boltholes to fit, but the ports will be misaligned by 1/8" on both sides. That will hurt the performance at best and probably not seal at all. I have seen 1/2" adapters machined to accomplish that fit, but you are going to spend a little unless you are a machinist.

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Steve B.
GSCA #2173 (1986)
67 GS 525 Stg IV
66 GS Convertible
65 GS HT
63 Riv

Hi Henning Here is a link for Triple 2 Barrel Intake manifolds made byu offenhauser,
http://www.classicbuicks.com/hpint&exh.htm

They run $299.