OK- - - -I was about to do the "measure the offset" procedure, but drawing on the collective wisdom of the forum usually gets an answer quicker, and more accurately. The 1.5:1 small block rocker arms sound like a better choice. I'm thinking of installing a piece of flat steel in place of the rocker shaft with screw-in studs aligned with each valve stem, then using a roller bearing rocker at each stud to move the valve. The studs for the exhaust rockers will probably have to be installed at a different angle than the intakes to keep the geometry right. The end result should be a valve train with a lot less friction loss than the old shaft system and lighter weight components- - - - -especially if aluminum roller rockers are used. Hardened steel custom-length pushrods from Comp Cams, and pushrod guide plates should keep everything aligned properly. If I use hollow pushrods and modern design lifters, it will probably also make it possible to eliminate the antiquated rocker oiling system the stovebolt engine uses.
Jerry
