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I did that on my first build Kim. The only problem is the 440 pistons are much heavier which required some external balancing. This time I used KB pistons, which are lighter than stock and almost 0 deck.
I spoke to the machine shop today and he agreed with me on using the 1.6 rockers. He can get me a pretty good deal on PRW stainless steel rollers, and says he uses them a lot and has good luck with them. I'm headed down the rabbit hole Don.:rolleyes:
I spoke to my machine shop today and he agreed with my thoughts on using the 1.6 rockers. He also recommended the PRW stainless steel rockers, and offered me a pretty good price.
I actually had a 72 400 with a factory forged crank. They were used for one year only, and only for 4 speed cars. It was the same crank as a 383 anyway. If yours is a 75 block, it has been changed.
Hawk, my buddy had a 78 Vette which he sent to my machine shop to be rebuilt. I spec'd what should have been a perfect cam for him. After he installed the engine it was a huge disappointment. We finally figured the problem had to be the smog heads. We changed them for a set of aftermarket...
I currently have just the stock stamped rocker arms, and I was wondering if I should be changing to adjustable arms anyway. I understand the factory rockers may not even be a true 1.5 ratio, so the 1.6's might net me a bit more lift.