AI Cam question. Need idle clips

[gregrob]

Hey guys.

I was thinking of using the AI 226/234 cam but I'm not sure it will idle like I want.

I'm thinking for my setup and goals for the car, a smaller cam may fit the bill.

I'm thinking of trying the 218 / 226 - .540/.540 - 112 LSA cam from AI

maybe have it custom ground and increase the intake duration 4 or 6 degrees because of my elevation (6000ft lol).

I was told that every 2 deg you increase the intake duration, increase LSA by 1. So maybe put this combo on a 114. Or leave it on a 112 or 113 +2?

Does anyone have an idle / run clip or info on this cam or one similar?

I'm NOT picking a cam based solely on idle quality, but the big lumpy nasty idle that sounds like an army of chimps under the hood with ball peen hammers is just not my cam.

I want a smooth cam, with plenty of area under the curve (which is waaay more important to me than peak numbers on a dyno, and I want a "mild" idle, although a little lump is ok.

I can always bump the idle up to 850-900 in the tune and put quiet mufflers on it. Then when I dump the cutout let er pop LOL.

Tell me what you guys think.

Thanx

[gregrob]

Also, a guy on LS1tech recommend a reverse split duration cam for my altitude. Meaning the intake duration would be higher than the exhaust.

Has anyone ran one of these and how did it do?

I'm thinking my original combo wouldn't work good, but wouldn't be against something like a 230/224 etc if someone has had good luck with it.

I just got a feeling I'm gonna be on my own this high in altitude. I'm sure there are plenty of ltx guys who race at bandimere, but not sure how much thought they have put into they're cam choice.

Hell maybe I should just do a standard grind and spray the hell out of it :finger:

[Z28pr0jekt]

I don't have any opinion on the cams listed except this

If you dont want a lumpy idle, you will want a 114 + LSA..
As for the reverse split you are talking about, I would not recommend this for an LT1 because our stock exhaust side flow numbers are so weak you will want if not the same, then more duration on the exhaust side.

[gregrob]

Yeah that's what I was thinking. Maybe that was an LS guy I know they do reverse splits on them sometime.

I'm thinking whatever I pick maybe just bump up the intake duration to hold the valve open longer and get more air since baro is really weak up here.

[KissMyWhtSS]

YouTube - AI 226/234 - Open exhaust

JoeliusZ28 on here.

[Green96Z]

I'm not sure what you are looking for in idle, but here's mine. It's a 222/230 112 LSA.

http://s238.photobucket.com/albums/ff114/malomanm/?action=view&current=Movie2.flv

[gregrob]

I'm not sure what you are looking for in idle, but here's mine. It's a 222/230 112 LSA.

http://s238.photobucket.com/albums/ff114/malomanm/?action=view&current=Movie2.flv

That's great! I wouldn't mind that idle at all.

What are your lift numbers? Is that a Lloyd Elliott cam?

Thanks

[gregrob]

YouTube - AI 226/234 - Open exhaust (http://www.youtube.com/watch?v=RSuHvqDX0z8)

JoeliusZ28 on here.

Thanks. I've seen his vid before. Pretty aggressive lol but the idle is turned way down. I'm sure you could tame that down a lot in the tuning and mufflers, if that's what you wanted.

[JoeliusZ28]

Thanks. I've seen his vid before. Pretty aggressive lol but the idle is turned way down. I'm sure you could tame that down a lot in the tuning and mufflers, if that's what you wanted.
The idle is 650 RPM, and most people seem to think that is pretty low I think thats where it should be.

by 1000 RPM nearly all the lope goes away, so yes a higher idle and a good tune will smooth that cam right out. Even untuned this cam makes fantastic low end power. It did lose a little grunt, but thats expected. Cruising around (with an exhaust system) it doesnt even sound cammed until you let it fall to idle. If this cam had just a little more vacuum, id say it would be perfect for a daily driver, but for that reason i usually recommend the cc503 which has a little less duration and wider LSA.

Also, that IS an open y-pipe. It doesnt sound nearly that agressive going through my SLP 2OTL even with the idle that low.

To be honest, I wish idve gone with the 230/238.

[Green96Z]

That's great! I wouldn't mind that idle at all.

What are your lift numbers? Is that a Lloyd Elliott cam?

Thanks

Yea, I got it from Lloyd. He grinded it so I could pass smog with it, and I did. :D

Lift is .530/.530 w/ 1.5 rockers

[gregrob]

Thanks for the reply!

If you ever get a clip with your catback on and the idle bumped up a little I'd love to hear it!


Greg

[JoeliusZ28]

Im changing to true duals, thats the only reason for the open y-pipe vid in the first place ;)

but there will be more clips of it coming this summer when i get out of school. If i get a chance ill take a vid with a higher idle for ya.

[KissMyWhtSS]

To be honest, I wish idve gone with the 230/238.Once you've done one cam swap, it's even easier to do it again. ;)

[JoeliusZ28]

Once you've done one cam swap, it's even easier to do it again. ;)
If only I was made of money...

[96lt1m6]

i realize this is WAAAAY more than what you are lookin for but DAAAUM it sounds gooood!
YouTube - 95 Camaro LT1 Advanced Induction

[HoLLo]

If this cam had just a little more vacuum, id say it would be perfect for a daily driver, but for that reason i usually recommend the cc503 which has a little less duration and wider LSA.


I plan to have this cam in my daily driver. Could you explain a little more please? What about vacuum makes it "not perfect for a DD"? I think a good tune should take care of any driveability factors

[gregrob]

With where his idle is set (650) I can see the car not making sufficient vacum.

I bet if you bumped it up to 850-900 it would be fine. That's just speculation though as I havent ran the cam.

[JoeliusZ28]

I plan to have this cam in my daily driver. Could you explain a little more please? What about vacuum makes it "not perfect for a DD"? I think a good tune should take care of any driveability factors
brakes require more human effort and my HVAC controls dont work.

ive heard this could all be taken care of with a tune though.


With where his idle is set (650) I can see the car not making sufficient vacum.

I bet if you bumped it up to 850-900 it would be fine. That's just speculation though as I havent ran the cam.
hmm, i dont think so because it never even worked while driving. Ive heard if you drop a couple gears and engine brake from about 4000 RPM you can get some good vacuum going but i havent tried that.

Im going to be tuning it as soon as the car comes out of storage. First things first, the tune is important so im not worried about the issue at all yet. Honestly I just neglected tuning it last fall because i just wanted to drive the car at least a few times last season after working on it all summer.