AFR 224/228 Cam?
Thread Starter
Teching In
Joined: Aug 2004
Posts: 46
Likes: 0
From: Windham, NH
AFR 224/228 Cam? So I have a set of AFR 205s on the way. Tony's test car used the AFR 224/228 cam. Anybody have more info on this cam? (lobe types, manufacturer?).
I currently have a cam sitting in a box (216/224 .551/.551 113+4) that I had intended to use with a blower. I changed my mind and went the H/C route. I was thinking of using the cam anyway (it's got to be better than stock!) but Tony M. tells me he thinks I am leaving at least 15-20HP on the table compaired to their cam. So I guess I am wondering how true that is and if I just need to eat this cam and buy the AFR cam.
Thoughts?
Ohh... what I want. Decent tunability/idle (daily driver) and still decent street drivability. I would like a broader TQ curve.
Thanks,
---Bill
I currently have a cam sitting in a box (216/224 .551/.551 113+4) that I had intended to use with a blower. I changed my mind and went the H/C route. I was thinking of using the cam anyway (it's got to be better than stock!) but Tony M. tells me he thinks I am leaving at least 15-20HP on the table compaired to their cam. So I guess I am wondering how true that is and if I just need to eat this cam and buy the AFR cam.
Thoughts?
Ohh... what I want. Decent tunability/idle (daily driver) and still decent street drivability. I would like a broader TQ curve.
Thanks,
---Bill
Launching!
Joined: Dec 2003
Posts: 251
Likes: 2
From: Portland OR
The AFR cam is a custom Comp Cam grind, using XE-R lobes. It has a 114 degree lobe separation, and a 113 intake centerline (+1 advance). Overall, it has moderate overlap, which will keep street driveability decent, and a fairly late intake valve close for a moderate cam, which will tend to slightly favor high RPM cylinder filling over low end torque. Also because of the later IVC, it will like fairly high static compression to keep cylinder pressure up at lower and mid range RPM. The XE-R lobes are harder on valve springs than most other lobe designs, too.
Your other cam will certainly make less high RPM power, but will idle better and be easier on valve train parts. If you're not drag racing, or worried about dyno numbers, you might not gain much seat of the pants from the AFR cam.
For what it's worth, DynoSim shows your cam down only about 8hp, and torque up about the same amount.
Your other cam will certainly make less high RPM power, but will idle better and be easier on valve train parts. If you're not drag racing, or worried about dyno numbers, you might not gain much seat of the pants from the AFR cam.
For what it's worth, DynoSim shows your cam down only about 8hp, and torque up about the same amount.
