Thanks Jerry, I actually have three new sets and six additional. You addressed my second question if I should coat them with gasket shellac. I test fitted them into the intake and then hung the intake on the head. It appeared to set flush and flat on all three ports without bolts or a gasket installed. I used VHT Flame Proof paint on the manifolds. Neighbor baked them in his powder coat oven for me. Hope it holds up. I also have to decide on carburetor. I have read most of your threads on CFM and over carburetoring the engines. The truck ran good on the Rochester. The Weber was given to me by Cosmo (fellow Bolter) who I bought the Fenton manifolds from. He indicated the carb ran good on his truck. I have no idea for the specs on the Weber. He furnished me with the adapter flange with it as well. I did locate a company called Pierce Manifold in Hollister, CA . Website site says everything Weber. They actually have an install kit for early Chevy Stovebolts.
Jeff 1964 Chevrolet K10 Fleetside "A Kid's First Truck" Follow in the DITY 1951 Chevrolet 3100 Follow his build in the Project Journals 1969 Chevrolet Camaro Convertible | 2020 Chevrolet Silverado | 3500 Duramax | 2021 GMC Sierra Denali USAF Veteran 1983-1987 | PSP retired 1990- 2012