1956 single four intakes?

[Edward McComas]

I think we all agree that some late 1956 single four cars used the 3735448 intake. I have been told that this intake was a Corvette only intake, and not used on passenger cars. Can anyone confirm this?

I have just run across a 3735448 intake that has a two digit date code representing the year (i.e. 56 versus 6). The complete date code is H 10 56 (August 10th, 1956). That would seem to indicate that the manifold was cast in Tonowanda, NY as opposed to Flint, MI. However, I think we believe that Corvette engine parts were cast in Flint, MI in 1956.

Questions:

1. Was the 3735448 intake also used on passenger cars in 1956?
2. Is it possible that the 3735448 intake cast in Tonowanda was used on a 1956 Corvette engine?
3. Could this intake be an over-the-counter replacement part? The date code of August 10th, 1956 makes this possible, but I think I recall that 1956 production was still running on August 10th, 1956.
4. Anyone know for sure what date 1956 Corvette production actually stopped?

[James F.]

Re: 1956 single four intakes?

Ed,
My '56 and '60 parts book indicate that all '56 passenger and Corvettes single 4 BBL manifolds are listed under the same part number. Logically I would not think the Corvette single 4BBL was anything special (back then there was more talk about ending Corvette production, not adding price with low volume parts). The '56 production ended during the 3rd full week in September '56. Regards,

[Clem Z.]

Re: 1956 single four intakes?

my list says 3735448 is a 210 HP 1956 corvette 4 barrel, 3737109 1956 4 barrel pass car.

[Loren L.]

My April 1, 1956 Parts Book

lists "56 PASS w/4BC "as part # 3728588 and SEPERATE listing for 56
CORV as part #3731158 - unfortunately, no casting #'s are given. Then my March 1, 1957 parts book lists them TOGETHER under YET ANOTHER part # 3738184 - again no casting given. Another fine path you have let us down, Edward.

[John H.]

Re: My April 1, 1956 Parts Book

I have three other independent (non-GM) references, and all three show the 5448 casting as '56 Corvette-only and the 109 casting as '56 Passenger-only.

[Edward McComas]

Re: My April 1, 1956 Parts Book

And you guys thought we knew all there was to know about 1956 Corvettes.
Yet another mystery that I am following. I'll also run this by the 1956-1957 team lead. Stay tuned...

[Clem Z.]

Re: My April 1, 1956 Parts Book

the numbers you posted are they part #s or casting #s which are different.

[Edward McComas]

Re: My April 1, 1956 Parts Book

The numbers I am posting are strickly casting numbers. I don't know what
the part numbers are.

[Clem Z.]

Re: My April 1, 1956 Parts Book

if those are casting #s i can not find them listed anyplace for any chevy engine even in the NHRA listing given by GM to NHRA for checking the stock classes. please post when you find what they fit.

[Edward McComas]

Re: My April 1, 1956 Parts Book

Are you saying that you cannot find any reference to the 3735448 casting number on the intake? My references indicate that it is Corvette only, and not used on passenger cars in 1956.

[Clem Z.]

Re: My April 1, 1956 Parts Book

i was referring to the numbers loren posted,i have posted above what casting #s i found for the corvette and pass car. sorry about the confusion.