Quote:
Originally Posted by Vettezuki
Maybe this is where I was getting deep in the weeds. What difference does it being in a 429 make? I was thinking in terms of my LSx (SBC) where 224/224 114 LSA (my cam) is considered "mild" and has a very slight lope to it. Having heard cams with this kind of duration and LSA (with much higher lift though  ) in other LS motors, they sound pretty aggressive.
Do you know how big the original M1 cams were? |
The bigger the engine the small the cam seems. I had an Erson in my Chevelle when I had the 396 in it and it had 214/214 at .050 with .514/.514 lift on a 112 LSA and it didn't have a lope at all. It was very smooth with an 800 rpm idle and pulled to 5800. I ran a best time of 13.23 at 103 with that cam with 9:1 compression, a Performer intake with Holley 850DP and 3.73 gears. It was alos my daily driver at the time. I then changed out the cam for a Herbert cam with 244/244 @ .050 with a .544/.544 on a 110LSA and went 12.96 at 106. That cam had a lope to it though and idled at 1000rpm.