Guestimate after cam swap

[slow94ta]

Alright so I am going to buy the Comp Cams 305 camshaft with LT4 springs with the stock rockers. I don't have much money so I cannot afford to go with a bigger cam/spring setup right now. My question is that with that cam and a tune with my cutout pulled open, how much RWHP increase should I expect over the stock cam cutout closed?

My mods as of right now are:

Pacesetter Mid-Lengths
Cutout
Flomaster
Suncoast Creations Ram Air intake
All Free Mods

[Z28pr0jekt]

Alright so I am going to buy the Comp Cams 305 camshaft with LT4 springs with the stock rockers. I don't have much money so I cannot afford to go with a bigger cam/spring setup right now. My question is that with that cam and a tune with my cutout pulled open, how much RWHP increase should I expect over the stock cam cutout closed?

My mods as of right now are:

Pacesetter Mid-Lengths
Cutout
Flomaster
Suncoast Creations Ram Air intake
All Free Mods

hm.. I'd say a max of 340rwhp
more realistically probably around 320-325 rwhp
also depends on what type of dyno

[slow94ta]

Also forgot to mention the car is A4...so there goes those numbers out the window...lol

[KissMyWhtSS]

290-310rwhp.

[slow94ta]

So I've been doing some more reading and I have read that apparently the CC502 is supposed to give some really impressive numbers. What do you guys think of that camshaft and will it yield less gains then the CC305?

[gregrob]

Ai 226 / 234 - .569/.570 - 110 LSA Primary Operating Range: 2000-6200rpm
This is our largest stock long-block cam for auto cars. Lopey idle, good drivability, and excellent mid-range with peak power at approximately 6200rpm. Properly tuned w/ supporting modifications, M6's typically produce 345-360rwhp SAE corrected.


Comp CC503 224 / 230 - .536/.544 - 112 LSA CompCams Lobe #'s - Intake: 3314 Exhaust: 3315
The Comp Cams CC503 is one of the most common newer grinds utilizing Comp's original Xtreme Energy series lobes. The more aggressive XE series lobes require quality valvetrain components to retain reliability. Our 218/226 will typically match it's output & our 226/234 will exhibit comparable drivability with another 10-15hp.

I would go for the 226/234 cam, or call AI and discuss with them what you're trying to accomplish and let them make a recommendation.

I was kinda going back and forth btw the CC503 and the AI 226/234 and I have pretty much decided to go with the AI cam, maybe a custom grind to accomplish my goals, but very similar to the 226/234 offering off the shelf from them

[slow94ta]

I would go for the 226/234 cam, or call AI and discuss with them what you're trying to accomplish and let them make a recommendation.

I was kinda going back and forth btw the CC503 and the AI 226/234 and I have pretty much decided to go with the AI cam, maybe a custom grind to accomplish my goals, but very similar to the 226/234 offering off the shelf from them

I think the 226/234 cam would be a little on the big side for my setup. I will still have the stock convertor and only LT4 valve springs due to lack of $$$. Do you guys think the CC305 would have idling problems at like stoplights and whatnot in drive? I just talked to Vince over at Trifecta and he said that with the tune he should be able to fix the stalling in drive if needed.

[Z28pr0jekt]

I don't see a 305 having idling problems

[slow94ta]

Alright, cool. Also how much of a difference is the CC503 over the CC305...because the specs aren't much different but everyone keeps telling me that it's an awesome cam and that it has really good drivability.

[Z28pr0jekt]

The 503 is going to have a choppier idle as it has a 112 LSA as opposed to the 305's 114 LSA so that's where you're going to have the idle that takes more time to tune (not that it's a big deal)

The 503 is also going to want to rev a bit higher than the 305.

That's about it really

[Fastbird]

If you're going to stay on stock heads, go with the 502. It's a GREAT cam for stock heads. Gives some of the best power under the curve and one of the broadest powerbands without sacrificing low end. A really great camshaft. Seen a few guys make mid 340's RWHP AND TQ with this cam on a cam only setup.

If you're going to be moving to ported heads shortly after the cam, go with a bigger cam.