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Title: 1954 331 exhaust manifold
Post by: Doug L on October 23, 2010, 04:36:12 AM

Will a 365 exhaust manifold fit a 331?

Doug Lemon

Title: Re: 1954 331 exhaust manifold
Post by: CEC #20099 on October 23, 2010, 10:37:24 AM

CEC #20099
The answer is no. 365 ports are much larger than 331 ports. I had to do the opposite, swapping a 365 into a 55 331 car using 331 manifolds. I made adapter plates, but they never worked right.
c.chleboun

Title: Re: 1954 331 exhaust manifold
Post by: Doug L on October 23, 2010, 05:39:59 PM

Thank You

Doug Lemon

Title: Re: 1954 331 exhaust manifold
Post by: Caddy Wizard on October 26, 2010, 01:17:57 PM

I have a pair of fantastic, restored 54 exh manifolds for sale on ebay. I started restoring a 54 60S and gave up (car was too far gone). So I am selling off some very nice parts....

Art

Cadillac & LaSalle Club Discussion Forum

Cadillac & LaSalle Club Forums => Technical / Authenticity => Topic started by: Doug L on October 23, 2010, 04:36:12 AM