cspangler
06-23-2006, 04:28 PM
I have a pair of exhaust manifolds that came with my 409 truck block. The casting numbers are 3732793 and 3743306. Since I have been waiting since February for headers and can't seem to get my order filled, i was wanting to know if these will fit on my 1147 348 hi po heads that are on my 409 block? Will these fit in my 1961 Belair? I thought i read in an older thread that these were basically the same exhaust manifolds as the 1961 409 583 and 584 manifolds. Any advice would be greatly appreciated. I just want to get this engine down in the car!!!