I have a chance to purchase what I am told is a GM split exhaust manifold. I have not seen the exhaust in person but am told his is an original GM part. I know the casting number for the original split exhausts was 3836108. My question is this, was there a GM replacement/aftermarket split exhaust manifold? I want to make sure I am buying the real deal before I lay down the cash. IF it is some sort of GM replacement part, that's okay, but I want to know that before I try to negotiate or purchase. I know the 3836108 split exhaust manifold came on 53-54 Corvettes and the thread below goes into that in great detail. There is no mention though of an aftermarket or replacement GM split exhaust manifold part number, if one even exists. Thanks!
3836108 Stovebolt discussion
