I am picking up and engine that I described in another thread. I was just wondering what a " GM 350 Hot cam " was? I was told this is the cam thats in it. Not really sure of the specs and all. Does it have any lump to the idle? Any info please?

Thanks

The GM "Hot Cam" specs should be 218°/228° @ 0.050" lift, 0.525"/0.525" lift with stock 1.6 rockers 112° lobe separation angle (LSA). This is noticable, but it not nearly as lumpy as first generation small block cams can be. Because the hot cam is installed only in third generation LS-1 (or LS-2) EFI computer controled cars that do not tollerate "lumpy" cams, this is about as lumpy as they get.


Larger Dave

As Larger Dave said, make sure that you have 1.6 rockers or you'll about .495 lift. And no, its pretty mild sounding. It makes pretty nice power but its not lumpy.

Thanks. The engine is on a stand right now. Do you think I should change the cam? or leave it in? I would like the most power possible and also like the lumpy sound too. It has a 4 bolt main, double hump heads, forged crank and pistons. That all I know on the motor.

Also how can I find out how much lift my springs can take without removing the heads?

Obviously its set up for a hydraulic roller cam so if you want more lope in your idle and still have plenty of torque, you may want to give Lazer cams a call. (lazercams.com) Its the only cam company that has hydraulic rollers with a tight lobe separation like 106 and 108. The lower the number, the more lope. Other companys like Comp have higher lobe separations so you'd have to go higher in the duration for lope. Well, that loses alot of bottom end torque which sucks for street performance...if thats what your intentions are. just my 2 cents.