Finally...over a year later, my 383 is almost rebuilt. The only bind I am in right now is the hydraulic roller cam selection, which I have narrowed down somewhat.

The engine looks like this: 1pc seal 350 four bolt main bored over .030. Scat stroker crank, forged eagle 6" H-beam rods, forged wiseco pistons, moly rings, race bearings and oil pump, canton oil pan with crank scraper, baffles and windage tray. Heads are Pro topline vortec heads (machined for .600" lift) gasket/port matched to an edelbrock rpm airgap intake, 3 angle valve job. Hedman LT's (until I can afford coated hooker lt's). Completely balanced with roughly 10.7:1 compression. On top of everything will be the Holley 900cfm tbi w/ progressive linkage and a commander 950 w/ innovative wideband.

Keep in mind I will be running a 150-200 wet (plate) shot as well. My goals overall are 480-500hp n/a

I am not too worried about LSA in respects to tuning, only in respects to the nitrous.
Here are the cams I am looking at:
Lunati54762: 300/310 adv dur, 242/252@.050, .525/.540" 110lsa
Comp306:230/244@.050, .520/.540", and 112lsa
TrickFlow:308/316adv, 246/254 @.050, .558/.558, 112lsa
And the GM 847, or any other similar cams.

Any ideas would be appreciated

 

Are those heads cast iron? 10.7:1 on aluminum isn't enough for those cams except for the comp 306. I would do the comp 306 on a 110 lsa, not knowing your head flow and true compression.

I am running a comp 242-254 .585 .614 110 lsa cam now in a 383, miniram, 10.5:1 comp and I don't have any power brakes. I should have gone at least 11.5:1 with this cam. I just bought some rhodes hyd roller lifters to see if I can get some more vacuum. If not, then I have another cam that I will put in, which is 230 .600 107lsa. Both of these cams were spec'd by 'well known tuners'. I am running a 175 shot also. The cam now doesn't 'come on the cam' until about 35-3800 rpms. Below that it is flat. After 35-3800, it's like somebody kicked the car in the a$$ end. I have a 3500 stall and 3.73 gears, and this cam wants more stall and gear.

I would go with the comp 306. You don't want to be like me and end up swapping cams, even though I have a 2 piece timing cover and the sdpc lifter holders, which let me change cams without taking off the intake manifold.

 

Keep us updated on how they work for ya.