You guys have been a real help in my Chevy van project. The next question.
When I rebuilt my 350, I had a four bolt main 350. I bored it .030. Decked it, trued it, balanced it. I have 64cc heads. I used a .196-.204 cam. It has now about 9000 miles on it. It has a performer manifold, with 600 Edelbrock EGR carb. Standard HEI ignition.
My cam is set at 0. I am considering roller rockers. The quandry. The lifters are stock. I am guessing 1/5. I am considering going roller rockers 1/6. Do I go 1/6 with intake and exhaust, or just intake with the exhause 1/5?
What I am trying to do, is increase fuel mileage, which the cam really helped, and reduce internal friction. I want the engine to be smooth. It is dual piped with a crossover. AT 10,000 I plan on going to synthetic oils. I have had good luck with them in the past. No visible wear on the engine. It still smokes on start up, but I suspect it is still wearing in. Only on start up, with 1qt consumption of oil at 3000mi.
Not too shabby. We use the van as a shop truck, and our project get around the country. A new transmission is in the works down the road. It is slow to engage after it has been sitting for a while. No noise though, and shifts real well.