1QwickLT1

iTrader: (1)

Whats up guys. I am working on a 383 for my car. I already have stock heads ported in my room (my dad is a machinest) i forget what he said the numbers are on the heads, but he put it on a flow chart and it can do up to like 514hp??? according to the paper. (I will have to get a copy and post it up, stock vs. what he did) Anyway, what would be a good cam to get me into the 450rwhp range??? or is this even possible, I have pretty much full boltons now. once i get some cash im going to get my crank and rods + go from there. As i said earlier i would LOVE to get like 450rwhp and then spray a 100-150shot. Im going to have all eagle forged crap. What would be a perfect cam for my project? It is a daily driver, but emissions is iffy, (no sniffer here since obd2) I already have LT's, ORY pipe etc. I want a nice lope at idle, and a good power band, i dont really know which is better, low end or top end?? but any advice would be great, and ask anymore questions if needed. THanks,

Dave

onesickLT1

450RWHP on motor you're gonna need a big cam... My car made 422RWHP with a 355 ci LT1 and a 236/242 comp cams hydraulic roller...There's alot more variables than that however... You're gonna need compression (mine was 11.75:1) and some way to tune it..... But you're started in the right direction with doing the heads.... At a minimum I'd say you need at least the CC306 cam which probably won't smog depending on where you are.... 450RWHP and remaining smog legal will be quite hard...

1QwickLT1

iTrader: (1)

Yeah, it doesn't need to be smog legal. I dont have to go through the sniffer here in MD, just a visual and a obdII. So i should be ok. Emissions is really the least of my worries. THanks for the input and any other info would be awsome. THanks, David.

Jordan57

The cc306 and GM 847 are two of my favorites...however with a 383 you can go larger. I would go with a custom grind...that will make more horsepower anyway you look at it.

1QwickLT1

iTrader: (1)

But will i net the 450rhwp like i had intented. Also, another questions would be should i keep my stock compression or raise it?? Remember i would spray a 100-150 shot. Thanks, David.

Jordan57

The GM 847 would be okay as it is larger still than the CC306 so with the added displacement you will be better off with the larger cam. 450rwhp is attainable if your heads are good. I would keep compression around stock unless you were only gonna spray at the track and then u could run race gas. If you are gonna spray on the street on pump gas you should leave the compression alone....unless however you are having a complete dyno tune where they can get your timing set right.

Snow Dog

iTrader: (3)

leave your compression be for now. if you desire more you can always just run .029 head gaskets, which raises it like half a point.

1QwickLT1

iTrader: (1)

Yeah, i am going to get a good tune when i am done the 383

Jordan57

bump it up

Z284thgen

iTrader: (46)

depending on the heads and there final flow number's i would look at getting a custom grind matched to the head numbers

see sig for mods

my cam is in the 230's still and i need bigger allready. but my tunning isnt totally done yet so im still not at my goal

Mikey 97Z M6

iTrader: (37)

If it were mine, I would contact a few of the following for a custom ground cam:

1. Futral Motorsports
2. Thunder Racing
3. Cam Motion

There are far more advanced cams available than a CC306 and it's 15 year old lobe profiles.

Mike

1QwickLT1

iTrader: (1)

lol yeah i deal with thunder racing alot. Like i said earlier i already have the head ported and polished with bigger vavles, and my dad showed me the flow chart stock vs. the P+P heads. The P+P heads flowed up to like 512hp or something. Also, what size injectors would i need with the 383 along with a 100/150 shot? Thanks for all the replys so far guys

Dave

Mikey 97Z M6

iTrader: (37)

I'd say 30lb injectors should be fine for a wet nitrous system, 36-42lb's for a dry system.

If you contact Thunder Racing, tell them you want a custom ground cam, not an "off the shelf" cam.

Mike

1QwickLT1

iTrader: (1)

Cool, thanks man. Will the 30lb injectors be good for the 100/150 shot + the 383 or where u just saying for the juice?

Thanks, David

Mikey 97Z M6

iTrader: (37)

The 30's should support 450rwhp NA, and if you have a WET nitrous system aka; spraying additional fuel through it's own nozzles into the intake, they should be fine.

If you have a DRY nitrous system aka; the additional fuel is supplied by the injectors, then you'll probably be better off with the larger injectors.

Maybe that'll clear it up.

Mike