Cam upgrade'n.....
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Staging Lane
Joined: Dec 2015
Posts: 56
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From: Killadelphia
Cam upgrade'n..... Got the cc503 currently it put out 373rwhp 350rwtq. I'm throwing a set of ported heads on there in the spring. Peak flow was 254cfm .500-.600ish on the intake nothing fancy. But decent... I can get an XFI467 for a decent price, but would there be a difference over the cc503 in there now.... Any suggestions??? Emissions is a non-factor for me... 4.10rear t56 w/ C.F. Dual friction clutch. 4.030 forged flat tops stock rods recon'd stock crank cleaned balanced with rods and pistons..... Looking to hit 400rwhp, more would be better of course but I'd like to have a modest 400... Springs are 130# closed 350# open or it maybe otherway around lol... 2.00 int 1.57 ext valves.... Help me out plssss...
Sure, the XFI467 will make more than the CC503, but not with those springs at 130# seat. With good heads and in front of an M6, it should make at least 400 at the tires.
Can you post that dyno graph of the CC503 with stock heads?
Can you post that dyno graph of the CC503 with stock heads?
Thread Starter
Staging Lane
Joined: Dec 2015
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From: Killadelphia
IDK what dyno was used, wte Injection Connection in Horsham PA uses lol. Bryan from PCM4less did the tune, I dont have the paperwork from the session I was there when the original owner had it done and I am going from what I was told after it was tuned there... Honestly it dont even feel like 370rwhp... It feels a little stronger than my buddies hotcam car that put out 340ish rwhp
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From: Maricopa, AZ
IDK what dyno was used, wte Injection Connection in Horsham PA uses lol. Bryan from PCM4less did the tune, I dont have the paperwork from the session I was there when the original owner had it done and I am going from what I was told after it was tuned there... Honestly it dont even feel like 370rwhp... It feels a little stronger than my buddies hotcam car that put out 340ish rwhp
Last edited by hrcslam; Jan 6, 2016 at 01:56 PM.
That's pretty sporty for the 503 cam 
Thread Starter
Staging Lane
Joined: Dec 2015
Posts: 56
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From: Killadelphia
Eh.... The concensses on here is everyone seems to like this cam.... Me on the other its okay..... I had the 224/236 in a different car and it seemed like it def pulled harder was also on a loser LSA... Was a 114LSA... But if this cam can do 400rwhp I'll keep it... But I am open to better suited cam's
The most I've seen a CC503 make, with home-ported heads, is 385 SAE (about 395 STD). That was through an A4.
So, with heads like LE2's or AI's 190's or 200's, 400 to the tires through an M6 is very do-able.
So, with heads like LE2's or AI's 190's or 200's, 400 to the tires through an M6 is very do-able.
Thread Starter
Staging Lane
Joined: Dec 2015
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From: Killadelphia
These are locally shop ported heads like I said .240ish cfm from .500-.600 give or take in between there... I have 1.7 roller rockers I could swap out for my comp 1.6's also when I do this swap. I just always figured throwing 1.7's in the mix would just add stress to the valvetrain so I never used them.
If you're serious about a significant bump in power over what the CC503 can do, then I think, before you buy any parts, you should just talk to Lloyd Elliott or Advanced Induction about a custom cam setup to complement whatever heads you're going with. The springs you have right now won't support any more than the CC503 with 1.6's. LE's custom cams are comparable in price to many off-the-shelf cams.
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From: Raleigh, NC
Eh.... The concensses on here is everyone seems to like this cam.... Me on the other its okay..... I had the 224/236 in a different car and it seemed like it def pulled harder was also on a loser LSA... Was a 114LSA... But if this cam can do 400rwhp I'll keep it... But I am open to better suited cam's
If you're going with ported heads though, there are grinds out there much better suited than either of these two.
I don't doubt that a bit. The typical GM stock head including the LT1, and especially the iron head LT1, responds favorably to a bunch more exhaust duration. Not so much with the good ported heads.