I would NEVER consider any rocker change without swapping the valve springs on an LT1 engine. The stock springs are really crappy, these are the same springs on B-bodies (the iron-headed LT1) are are widely regarded as POS.N0DIH said:Anyone know if I can put 1.6 Rollers on my LT1 w/o changing springs?
Check this link for other cam data.N0DIH said:Is there that much performance gain with the 1.6's vs 1.5's on the stock cam?
Or is it really best to go with a cam like the HT383 cam or a custom grind?
My thoughts on a new cam, I would go for a .470/.470 lift, with a LC of 107, duration of 201 intake, 206 exhaust @ 0.050".
Maybe a little more duration if I felt the top end of the rpm range could tolerate it. I think if anything it needs more breathing, but how much to not sacrifice low end.