wht97ws6ta

I was just trying to get an idea of what the cams capabilities are with ported heads and intake. It was originally intended to be a simple cam swap on a stock LT1, but things got a bit more hairy than that. I got a good idea what it should make, but id just like to see what it did on some running combos. The heads were flowed on SF600 bench and the flow#s are:

Int Exh
.200 (162) (154)
.300 (202) (195)
.400 (247) (221)
.500 (270) (237)
.600 (277) (240)

The exh was flowed with a pipe, and the intake port measured 185cc. I know the intakes a little sluggish but i was trying to lean towards a smaller runner because its going on a 355. Tell me what you guys think. Right now im not sure if i want to just run the cc503 i have, or go with a little more camshaft. Almost thinking of a single pattern cam, but im quite sure when you put a full exh system on you lose some of the effects of a good port.

Green3spd

iTrader: (7)

The 503 would work great.. but You could Def go with a larger cam.. the 503 is know to work Great with STOCK heads, so with a set of these, Id got with a larger custom grind, or if you wanted somthing off the shelf, there are several more cams to chose from.. im running a cam with more duration than the 503, but less lift, on a stock H/I/Ci and I absolutly love it...
Kris

TheDon619

iTrader: (4)

im going to be running a H/C/I with the cc503, sotck ported heads and stock ported intake ill let u kno

robsquikz28

iTrader: (246)

I would definately put a custom cam in with that setup IMO

gixxer75094lt1

iTrader: (8)

cc503 is a great cam for stock heads, but honestly with those great flow numbers i would def. look for another choice. who ported the heads? the exhaust numbers are pretty good. and the mid level numbers are great as well. custom grind would be my choice to get the most out of those heads. sell the cc503 and go custom. theres always someone looking to buy that cam.

Green3spd

iTrader: (7)

Very curious who ported heads?
the exhaust flow AMAZING!

gixxer75094lt1

iTrader: (8)

^^^THATS WHAT IM SAYIN!! those exhaust no.'s are terrific...who ported those heads???

blkcamaro_z28

iTrader: (3)

If you wanna get a different cam I would be interested in buying the CC503 as long as you have the longer pin for the 96/97 models in it. PM me if interested. Thanks Chris

tbird31

iTrader: (22)

I'd like to know this as well. I'm debating on getting my stock heads ported. NO I do not want to change the camshaft at this time. Perhaps later down the road, but I would like to know the full potential of the CC503. I'm making 351rwhp and 355rwtq with my heads only being milled and a TINY bit of clean up. I'm assuming I'd make more in the ball park of 380/390 with a set of ported stockers...or am I thinking too high?

marc97taws6

iTrader: (6)

380 through a T56 assuming full bolt on's should be about right. Stock 10 bolt would help too.

wht97ws6ta

I was leaning towards a custom grind, i just didnt know what kind of power had been made with this cam. I really dont see no need to get crazy with the lift because the heads have done there magic before .600, so i wasnt planning on much over .550 lift. Ive seen alot of these motors make big power with rather conservative cams so thats really the reason i considered running the cc503 that i have. I thinking of running in the area of 236 at .050 on the intake and exh on 112 LSA, but im still in the air about what im going to do with a camshaft.

I actually done all the port work to the heads. Ive got countless hours going back and forth from the grinding bench to the flow bench trying to get these heads to flow like i want them to. Im actually working in a larger intake port for anyone who happens to come in with a stroker build. I just wanted to fix a smaller port for my motor to work well with my 355 build. I work at a shop outside of Jacksonville NC, P&M Performance Racing Engines. Ive been there for going on 4 years. Mostly what i do there is engine assembly, and operate the engine dyno to get the motors tuned and in plug and play form. You can check us out at www.gofastmotors.com. The site is in the process of being built. Theres a shop tour up there with some pics of the place and the crew. If you have quick time you can see a vid of a big block chysler on the dyno and the cnc machine in action.

marc97taws6

iTrader: (6)

Call Lloyd Elliott or AI with your goals of a cam.

Good flow numbers, btw

wht97ws6ta

I will probably hold on to it because i have another LT1 that i plan to put in my 87 El Camino, so i will probably just slide the 503 in that one.

Gojira94

iTrader: (4)

Gotta agree with Gixxer75094lt1, custom grind. cc503 is my cam, my flow numbers on ported OE heads are almost identical at .500. Changed my valves, though: kept 1.94 on the intake, but my machinist in Fuquay did a 5-angle on them and they seat way out at the edge, so effectively flow as efficiently as 1.98, plus 1.56 on the exhaust. Heads came out so nice I wish I'd gone for a custom grind. I calculated about 385rwhp with full bolt-ons, hit 377rwhp.

Hats off to you on the porting- it's an art. Wish I had the wherewithall to learn it myself.

wht97ws6ta

I started out with stock valves for a comparison. When i switched to to 2.02/1.6 it gained 5 CFM on all lift values on intake and exh was slightly more than that. From my experience with cyl heads, if you have a good effiecient port, it wont require big valves to flow big numbers.