Greg,
Who did your tune? I have an even bigger duration AI cam on a 110* lsa, it has great street manners and its only a 355ci so its not cubes mellowing out the cam...... Its Ed Wright's tuning magic that makes it mellow


Mike

 

I would suggest a reverse split duration cam for you higher elevation needs. You will need more intake duration for the lack of air available to your engine, that way you can properly fill the cylinder. I would suggest a cam along the lines of 230/226 or 228/226 on a 111+3 or a 111+2.

 

Thanks 96. I don't think 110 is radical, but I do think it affects the idle. All the videos I've heard of that cam have been pretty lumpy and that's all I have to go on.

Although I do know that tune affects it a lot. I was thinking of going with madtuner when the time comes but if there is a better option I'm certainly open to it. Just trying to learn what's out there and do my research before I jump in and start modding.

I'm one of the guys who thinks youre combo and how you fit the parts together and tune them is much more important to going fast and being reliable than how "big" or how much money you can throw at the parts you choose.

I've seen from the cadillac cam and other more mild offering that bigger is certainly not better. That plus my elevation is going to make cam choice difficult, but I like the idea of the AI 226/234 for lots of reasons, just want my cake and eat it too, that cam or one similar with a nice stealthy idle.

Thanks for the info.

 

If you're talking to me I dont know what tune is in the car. Shoot I dont even have the car yet lol. I'm picking it up from my buddy and now it's just a matter of logistics. Hes in SC and I'm in WY and will be flying back to drive the car out. I have to go to chicago for work next month, etc, etc so it will be a while before I can get out there.

Just trying to do research now so I know what direction to start heading when I get the car here so I can get going on it. Probably be at the track every week testing and tuning

Who is Ed Wright, does he have a website, etc?

Thanks

 

Thank you very much for the recommendation. I follow your logic completely.

I think what I'll end up doing is when I'm ready to purchase I'll call Ron at AI and maybe Lloyd too and see what they think, all things considered.

 

You can contact bolth of them to see what they think will work, they may be very similar, but each cam designer is going to have different ideas. Be sure to ask if they have experience with higher altitude combinations, as a car that is at near sea level will react differently to the same combo. For instance a car that run's a 15.0 second 1/4 mile at Bandemere Speedway in Denver, CO is equivelant to a 13.97 at sea level if your at 5500 ft. http://www.gnttype.org/techarea/misc/altitude.html .

 

I think that is subjective. 650 RPM is all you need to maintain decent oil pressure, and its also the factory setting on autos IIRC. I personally couldnt stand whatever the stock idle was, because while driving it seemed as though my engine was never settled. The stock idle is to help "novice" manual transmission drivers IMO. That, and I like an idle with a chop anyway.

my car is 11.5:1 compression, completely untuned, WITH a lowered idle and it drives VERY friendly. It runs smooth as ever above 1000 RPM and bucking is extremely minimal... so little, that I am 100% positive it will disappear altogether with a tune.

 

Greg,
1. If you, your builder, or your tuner feels like a minute change in lobe separation would be to your liking, we will provide it. The difference between 110 and 112lsa is rather small regarding something subjective like idle quality.

2. We have provided valve train/top-end systems for cars at environmental extremes in the past. If you would like something ground for your particular application, we can do that. Additionally, after the cam is ground we roll every one of them on our cam test stand to certify that it is indeed correct before you spend time on the installation. We go well beyond the typical choosing lobes out of a catalog. However, between the additional inspection and utilizing a core that is an upgrade over the standard billet core our cams may take a couple weeks to ship.

I agree with these guys in regard to idle speed and tuning. Set it at 800-1000rpm & with proper tuning it will sound relatively mild. If you would prefer a subtle idle to be your primary concern vs. performance, then we'd want to do up something else for your app.

Thanks for the interest, guys.