Re: 359 intake manifold

Posted by BigKev On 2021/3/16 15:44:05

A standard 327 (junior and older models) came with a 2bl carb, with a 2bl intake manifold. The later 327 Senior and 359 motors had 4bl carbs and manifolds. Not sure if there is an intake runner length difference between the 327 and 359 4bl manifolds or not, but the mounting is the same. Regardless, the flange side is the same between all 288/327/359 blocks, so they physically all can interchange. The main difference is in the carb mounting surface, smaller rectangular 2bl mounting pattern with 2 intake holes vs larger square 4bl pattern with 4 intake holes.

You could mount either on either (2bl on 4bl, or 4bl on 2bl) with an after-market adapter of course, but not obviously there is probably a difference in flow characteristics as well.

Ross would be a good source to discuss pros and cons of different setups as he would have the most experience there.