Ok two questions:
I rebuilt a 402 engine in my 1972 Chevrolet Cheyenne PU truck. Bored 60 to 4.185 and hi rise Eldebrock Performer RPM intake. headers, Comp. cam .498 intake and .483 exhaust lift. Roller 1.7 rockers. Steel crank, balanced everything! Large oval port heads that have been ported to match intake gasket, not polished. The casting number on the heads come up as a 427 425 head. The only carb I had to run has a number on the frt of 60570, 3460. I was told that it's a 570 cfm. I have been building engines since I was a teenager but that doesn't mean I know all bout tuning an engine or carbs. This engine runs great but it sure seem to be wanting more gas. What size carb do I need to make this engine come alive?
Next question, I built this engine with the Joe Gibbs grease called Driven and Royal Purple oil and Royal Purple oil filter. I did the 2500 RPM for about 20 minutes or so at start up and all seem good. I have only about 300 miles on the engine so when do I need to change the oil and what would be a good oil to use? This is the first engine I've built in a few years so I'm not use to the Zink and what every else was taken out of the oil. Sure glad I did some research before building.
I rebuilt a 402 engine in my 1972 Chevrolet Cheyenne PU truck. Bored 60 to 4.185 and hi rise Eldebrock Performer RPM intake. headers, Comp. cam .498 intake and .483 exhaust lift. Roller 1.7 rockers. Steel crank, balanced everything! Large oval port heads that have been ported to match intake gasket, not polished. The casting number on the heads come up as a 427 425 head. The only carb I had to run has a number on the frt of 60570, 3460. I was told that it's a 570 cfm. I have been building engines since I was a teenager but that doesn't mean I know all bout tuning an engine or carbs. This engine runs great but it sure seem to be wanting more gas. What size carb do I need to make this engine come alive?
Next question, I built this engine with the Joe Gibbs grease called Driven and Royal Purple oil and Royal Purple oil filter. I did the 2500 RPM for about 20 minutes or so at start up and all seem good. I have only about 300 miles on the engine so when do I need to change the oil and what would be a good oil to use? This is the first engine I've built in a few years so I'm not use to the Zink and what every else was taken out of the oil. Sure glad I did some research before building.