Im building two 383 stroker motors one with a procharger and one with turbo and i need a cam for each, im looking for help and advice before i call a company to have them custom grind the cam.

First motor is -
383 sbc stroker
5.7 rods
8.5:1 srp pistons
64cc edelbrock rpm aluminum heads 185cc gasket port matched
victor jr intake
3000 stall converter
3.42 gears
turbo 350
Vortec V1 supercharger
hydraulic Flat tappet
powerband ~3000-6200

The second motor
383 stroker
9:1 comp
sportsman 2 200cc fully ported heads
hydraulic roller
victor jr intake
76mm turbo
3200 stall converter
3.45 gears
similar powerband 3000-6200

thanks in advance guys

 

Lunati. Recommended the l01007 for the supercharged 383 its hyd flat tappet rpm 2600 to 6500 adv dur. 313/328 lift 509/.533 244/254 @ 50 112/107 lsa/cl does this sound like a nice cam for the first motor described?

 

Seems kind of on the big side for that application, and I've noticed that lately that's they way they tend to go.

I know that for my current turbo project based on a stock 305 short block they recommended something with 239* at .050" and 110LSA, which was BY FAR more overlap than anyone else even considered. I can't imagine trying to run that cam in an rpm range that stock rods/bolts... would handle.

I'd really feel like you need a little more info to give a good answer (like use, gearing, car...), but if it was my car, not too heavy and plenty of gear, I'd look for something with a little less intake duration and a degree or so more LSA (a lot of manufacturers make N2O cams that are pretty close for centrifugal blowers). Slightly smaller lobes then that if it's FI, heavy car or not a lot of gear. I think that you're going to run out of supercharger...

Do you expect the TH350 to live?

Turbo motor... I'd look at something like a comp 292xfihr13, in a heavier car maybe more like an 280xfihr13.

 

For the first motor i ended up going with the comp cams NX274H. You are correct on the n2o cams, thats what comp cams recommended and said it would be a nice cam for the setup. This motor is going in my borthers 2nd gen 1973 firebird formula, ~3200 pounds, its a 85% strip 15% street car. Turbo 350 has been holding up fine so far with the previous setups. Car had a 406 n/a running 11.0, currently it has a cheap 383 with stock iron heads running 12.5s waiting on the new motor. Hoping to go 10.5s

The other motor is whats going in my 89 trans am. I am still looking for a cam, im thinking something in the 236 int/exd range and 530ish lift? on a 114lsa? this is also a 85%strip 15% street stock weight plus a 8pt roll cage and turbo pipings maybe 3600#? i have a maddog built 700r4 supposedly "rated to 700hp with street tires" but i'll put it to the test and see how long it lasts.Its been holding up fine so far with a few 11.8s nitrous passes and 11.8s turbo passes

 

Both sound good to me... though I think that you might be shooting a little high rpm for the turbo motor...