Quote:
Originally Posted by ssmike
yea Tim would know better than me, I'm just getting into it! When I was at Gingerman I was coming out of turns in 3rd gear at around 3K. Autocross is mostly 2nd gear sometimes as low as 2500 rpm out of hairpins. I have 3.91 gears which helps and I would like to customize the cam so it works well with the gears on the track. I guess what I'm looking for is like I said, a broad curve but not JUST top end peak power. I know there are road course grinds out there so I'm curious about what makes a better road course grind over a drag strip grind. I'm also worried about valve train longevity and keeping maintenance to a minimum.
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I got one from Brian Tooley, don't get an off the shelf anything. Lift around .6, HUC or similar lobes, tighter LSA, more duration. Autocross won't stress the valvetrain nearly as much as road course. Ls3 already has hollow valves. Titanium would let you get away with more lift but unless you get serious about squeezing every last ounce out of the engine its not worth the investment for the occasional track day of fun.
If/when the engine grenades I will get an ERL monster and probably LS7 heads. There is minimal benefit to expensive heads with an LS3 on the lower lift cams since the airflow increases a lot more at higher lift #'s that you'll never see with these cams intended for road racing.