C1 numbers help

[John C.]

These are off my intake manifold the engine is out of a late vin 1959
D159 3746826 GM7 is this correct?

[Donald L.]

Re: C1 numbers help

John,
I have casting # 3746829 as being correct for 59 C-1 w. 230HP.

[John C.]

Re: C1 numbers help

Thank you very much

[Joe L.]

Re: C1 numbers help

John-----

Casting numbers can be difficult to discern. In any event, GM casting #3746826 did exist but it's a 2 barrel manifold. No 2 barrel manifold was ever used on a Corvette. If the manifold is a 4 barrel manifold, then the chances are that the number is 3746829 and you're just mis-reading the last character.

[Jerry C.]

Re: C1 numbers help

JG list 3746829 as 58,59 & 60.