The Stovebolt Site Forums The Shop Area Engine Shop 235 intake info, compare and differences

Okay, fellow Stovebolters I am coming to you needing some help. I have two 235 intakes.

One is marked 3835590 with a 24 on the other end. It has a horn boss. See pic called 383 and N1.

383

N1

The other intake is marked 3754644 with a 2 on the other end. This one however is 'shorter'. By shorter I mean the space from the bottom where it bolts to the exhaust manifold to the top of the carb mount. It has no horn boss. Would this one be from a car vs. a truck? See pic called 375 and N2.

375

N2

Here is a comparison picture to better explain the 'shorter' manifold comment.

Compare

Does anyone know what these manifolds might be from? Year? Car/truck? etc? My 235's W1 carb fits on both. Thanks!

Big Tee,

Those are most excellent photos.

Someone else will have to help identifying that "later" manifold. However, here is some information and observations.

I do not know when the horn-mounting "boss" was eliminated; however, I know it was no longer needed on trucks in 1954. I cannot recall if an undrilled horn boss was still on the truck's intake manifold in 1954 (I'll check). I do not know when the car intake manifold stopped having a horn boss.

The bottom manifold in the "Compare" photo has a location and boss for the vacuum-wiper fitting that is different from any I have seen up through 1961 (I have not seen later 235/261 intake manifolds).

Good luck.

Thanks TC... and thanks for your compliment on the photos. Perhaps others can shed even more light.

I have a late (58-62) Canadian Pontiac 261 that has an intake similar to that one. The 1956 261 I have has the older style.