Bought a 1985 Z28 Camaro recently, had a 327 out of a 1969 Camaro in it. When I bought it, a friend of mine who is a mechanic said that I could bring the motor to his shop and rebuild it. He let me use his tools and stuff to save on labor. When we got to the push rods and rocker arms, he told me that my pushrods were to short, so I got new ones. We went from like 7.8" to 8.1". Well we finished the rebuild and got the motor back in the car. Fired right up, sounded great, no smoke, leaks, knocks...nothing. But when I put it in reverse and started driving, a rocker arm stud snapped in half. So I took it out and put in another stud, tried it again, and another one broke. I was starting to get aggravated, but I replaced that stud also. Then I put it in reverse, it made it all the way to the end of my road, and it made the same loud Popping noise, so I got it back to my house, and 3 or 4 other studs have snapped. I am thinking that the pushrods are to long and I need to go back to around 7.8", but I am not a mechanic, I am looking for a mechanics opinion. The only thing I am trying to ask is, what could cause rocker arm studs to break over and over?
Ok, I know that the stock pushrods for a 327 are 7.8", but is the length requirement effected when you put in a big cam? Because the cam in it now is like 456 lift.
Ok so everyone is saying I need the original 7.8" push rods. Is that still true even though the original cam has been replaced with a bigger one? almost 460 lift.
Ok, I know that the stock pushrods for a 327 are 7.8", but is the length requirement effected when you put in a big cam? Because the cam in it now is like 456 lift.
Ok so everyone is saying I need the original 7.8" push rods. Is that still true even though the original cam has been replaced with a bigger one? almost 460 lift.