Some M1 porting pictures and flow numbers

I have a gentleman’s Edelbrock heads on the flowbench so this was a great time to do some porting on a small block Mopar M1 manifold. He provided a one inch spacer and it had a bulge in the front of the manifold so knowing anyone would do their best to have it removed I did so before I did my before flow testing. Zero shaping was done just quickly remove the over 3/16 bulge. Before picture. The customer gave me permission to post up the progress so I’m sure he will be dropping in.