What are the numbers on the heads? The block numbers wont help (352's to 428's all shared common casting numbers). Best source of info for the FE is at FordFE.com.
The casting numbers on the heads are C8AE-H(between two exhaust ports) and the block has OJ176740 stamped on it.
The C8AE-H Heads feature the "Short" Intake port. It measures apprx 1.94" tall, and is based loosely on a MR profile(same height). It relies on good port velocity to create low and midrange power. It is not, however, a good HP Head as cast. If you care to install larger CJ-427 LR Valves(2.09" x 1.65"), and do some bowl and throat work, you can get the Heads to the mid 260 cfm range on the Intake for a moderate cost. Full porting will get the Heads to the 285-295 cfm range on the Intakes, which will support over 600 hp.The head number is your typical 390 passenger car version, circa 68-70. 99 percent chance it has the smaller ports, and also a lower exhaust port exit. If your looking for more performance you can put larger Cobra Jet intake valves in them, or look for a set of heads with a C4AE casting number which aren't too hard to find, but by the time you go thru them your money will have been better spent on a set of Edelbrock heads.
Damn I hate show offs. Absolutely amazing what some guys are capable of with a drill motor, hack saw, and a file
Made some manifolds for a 63 390 over the weekend and thought of this thread....here are some flanges I made for it if it helps you identify.
Hammer and chisel.Damn I hate show offs. Absolutely amazing what some guys are capable of with a drill motor, hack saw, and a file