cam mpg

[99LS1]

Imlookn for a mild cam somethin to change the idle a bit and add some power. I was just wondering how bad it will affect the mpg. Right now all i got is a slp lid, loudmouth, slp maff. I would get a tune after the cam install.

[Frost]

If you stay reasonable, something like a 224/224 or 224/228 on a 112LSA will have some lope and with proper tuning, you will lose about 2 around town. Highway will be almost the same.

[99LS1]

ok thats not to bad at all, would i need to put a stall in also?

[Frost]

auto's lose more (converter, rotating mass, etc), and yes, you will both want and NEED a stall. It makes a huge difference itself; I'd do it first.

[GOR1LA]

what kinda of mpg are you getting right now? Just curious since my car had a small cam when i bought it.

[Hi-Po]

Frosy is right. It really sound slike a 224 is exactly what you want. Or very similar. Will give you a nice increase in power. Two things...

Get Long tubed Headers, X-H pipe, cat back, true duals, or a mufflex style exhuast. You will be choking that cam to death with zero exhaust improvements

Also, get rid of the SLP MAF after you do the cam and go to get it tuned. Aftermarket MAFS are junk and usally cause problems.

Search around for 224 camshafts on the LS1 websites. I think its right up your alley.

[nhraformula]

ok thats not to bad at all, would i need to put a stall in also?

you also will need headers so you can let the cam breath
I have a 3000 stall, 224 cam, long tube headers, off road y-pipe, ls6 intake, volant cai and tuning and make 379 rwhp. I lost only 2-3 mpg

[99LS1]

you also will need headers so you can let the cam breath
I have a 3000 stall, 224 cam, long tube headers, off road y-pipe, ls6 intake, volant cai and tuning and make 379 rwhp. I lost only 2-3 mpg

Wow got some pretty decent numbers with little mpg loss.That a a4 or m6 ya got?

[Firebirdjones]

My wifes SS has a very mild Vinci #062 cam. You can check their website for exact specs but it's very similar to a Z06 cam with the lobe seperation tightened up to 112 and other minor changes along with their crane variable ratio rockers.

Has a very mild lope that still gets stock like gas mileage with 22 around town and 28 on the highway with cruise set at 75-80 mph.

Whats nice for my wife is that you can still chug this motor down to 800 rpms without bucking or kicking, perfect little cam for her.

[WS6ICK2K]

Wow got some pretty decent numbers with little mpg loss.That a a4 or m6 ya got?

I am sure its an auto notice the 3k stall mentioned above.

[INMY01TA]

230/236 cam M6 here. Gets about 16mpg city.

[nhraformula]

Wow got some pretty decent numbers with little mpg loss.That a a4 or m6 ya got?

Its a auto. My numbers are more or less average for the set up i have.
Overall im happy with my set up.

[mark21742]

you also will need headers so you can let the cam breath
I have a 3000 stall, 224 cam, long tube headers, off road y-pipe, ls6 intake, volant cai and tuning and make 379 rwhp. I lost only 2-3 mpg

just curious, with your numbers are your heads stock or worked over? I have a simular cam with ported and polished heads but haven't got on a dyno yet to get numbers, just lots of street tune time to get her running great

[nhraformula]

just curious, with your numbers are your heads stock or worked over? I have a simular cam with ported and polished heads but haven't got on a dyno yet to get numbers, just lots of street tune time to get her running great

stock 241 heads

[mark21742]

stock 241 heads

I couldn't believe how much louder the exhaust was after i port and polished the heads. it was insane just how much metal i got out of them too.