Please help.

[10secopcar]

I am new to the carburated world. I have a 71 swb with a 402 I think. it is a big block but I have no idea where to look for casting numbers, block or head. The tag on driver fender says part number 3994016, is this the block casting number? I did however look up the exhaust manifold numbers and they are apparently from a 73 454 police edition motor. Are these the ramhorn manifolds? It is bagged and i wanna put longtube 1"3/4 headers on it. But I am not sure about the oval port or round port part and not sure if they will hang below the frame. Sry for all the questions just new to this era of truck and don't know alot about them.

[Shyguy]

The engine casting numbers are normally back by the distributor.

There are numbers on the front of the passenger-side of the engine on a flat surface just below the head, that is the number I have always used to identify an engine because it is the easiest to get to.

I think for casting numbers and such you could use "Mortec.com" or post the numbers on here and I am sure some one will let you know what they mean.

Danny

[special-K]

www.mortec.com