The C8VE-A (1968) heads are about 75cc's and were designed with no hard seats to run on leaded gasoline, so you can either spend the money to have a machine shop to cut the heads and install hard seats or you can take your chances with valve recession (valves eating their way down into the heads). This may not be a huge problem, depending on the miles that you intend to put on the motor, but if this was to be a daily driver, I'd install hard seats.Anyone put C8VE-A heads on a 1977 460. what cam would work best.I guess the deck height is a little higher,is that a problem .I'll probably change the studs and use roller rockers .Any info would be appreciated
If you reduce the deck height, you will increase the volume of the combustion chamber quench area. That will lead to higher combustion chamber temperatures and preignition. The automotive engineers did not call it “quench” for nothing.Yeah ,the MK111 detonates on 91 ,but give it some av gas it purrs like a kitten
Negatory there cowboy, if you reduce the block deck height and leave everything else alone, you will decrease the volume of the combustion chamber quench area. Doing this will decrease the probability of detonation/pre-ignition. However, if you cut the block deck height without engineering the proper head gasket thickness, you run the risk of a piston/head collision.If you reduce the deck height, you will increase the volume of the combustion chamber quench area. That will lead to higher combustion chamber temperatures and preignition. The automotive engineers did not call it “quench” for nothing.
Crower still makes the Beast series, but I'm sure there is probably something better out there today. Rockers were Harland Sharp's, guideplates were Ford MotorSport. Intake was Edelbrock Performer with a 1" open spacer...they didn't make a Performer RPM back then, and the Torker isn't worth the aluminum it's cast out of.Thanks again guys for the info. The motor is in a 1949 merc M47 pickup, we built it about 3 years ago.It has a TCI weld in front end -mustang11 style,C6 tranny,TCI 4 link with coilovers 9" rearend ,tubbed and big tires.I changed the cam timing and put a performer intake and 650 edelbrock carb, MSD stand alone distributor.It's just a toy. -but it needs more power,drive it on the street ,maybe a little drag racing . did U use chev guide plates and were the roller rockers 1.73.Do they still make that cam?I'll just run a little av gas and some lead additive.What carb did U use? I'ii be running 2.8:1 gears.