JS

iTrader: (4)

Actally I believe the XFI are easier on the vavle springs even with the added lift...
They dont slam the valve as badly as a XER and are designed for the Beehive springs...

s346k

iTrader: (4)

so you're using xfi lobes on both the intake and exhaust?

Patrick G

iTrader: (14)

That's correct. The XFI exhaust lobes are really nice. Very smooth.

JimMueller

iTrader: (9)

Can't wait to see the actual graph

CHRISPY

Congrats, great results! What length PRs did you end up using with this cam?

Ryan L

Alright guys, I edited my original post with my actual graph.

pastvertical

iTrader: (1)

where can i buy this cam from..
needed it like yesterday.

JimMueller

iTrader: (9)

Hmm, torque below 3500 is kinda low, but the AFR is pretty lean there also. Maybe it's related. I think I'll try one on a 110+2.

mrr23

iTrader: (3)

nice gain above 3500 rpms, but not digging the marginally better that stock cam torque numbers under 3500 rpms. now, if the torque line from 2700 - 3700 rpms was a straight line versus the trough there, it would be killer. like jim said, maybe it can be tuned out by richening the fuel up in that area, as it is a bit lean. assuming WOT is at 2200 rpms, i see 16:1 at 2700 rpms with 13:1 by 3700 rpms. i am no tuner by any means, but just seems to me that's lean.

Ryan L

Any vendor that sells Comp can get it for you. You just need to tell them the specs.

Ryan L

You can see the dip was present with the stock cam, so I doubt it's a cam issue. I've seen certain types of headers on these cars cause a weird sag in that RPM so it might be that as well. Also, alot of dyno sheets posted only start at 3-3.5k RPM, so the scaling of this graph may cause it to look a little weird. Who knows.

mrr23

iTrader: (3)

i don't recall saying it was a cam issue. i was refering to the numbers produced and the a/f ratio at those rpms. just looking for a way to enhance what you already have. maybe some additional tuning might help.

AU N EGL

Opps Post in #15 Good looking cam specs

LS1TORQ

iTrader: (1)

man this cam has got me scratching my head. I'm thinking for my new setup, this cam, stock 243's with .040 cometics, and a FAST 90. It seems that would do 450 rwhp or damn close with stock heads and great drivability!! its hard to do this with budget after- market heads.

Whiteboy572ci

Nice!

Ryan L

Do the lobes make that much of a difference? I'm seeing a bunch of big XER type cams making around the same power or less on this forum and the Vette forum. Hell, even some of these guys have ported AFRs and Fast 90s. My car barely has a lope at idle and seems almost stock. Why are people still buying XER stuff??

JScamaro

iTrader: (6)

Very nice results!

I am seeing a lot more xfi cams out lately and I'm seriously considering using them on the intake and exhaust for my grind because of the results I'm seeing.

How is the valve train noise? I heard the xfi lobes are a little quieter than xer lobes.

Ryan L

Valve train noise is almost stock. That's the thing... it has a tiny lope and is pulling awesome numbers with a lack of other mods. I'm confused in a sense. I decided on this cam because it made sense to me that a higher lift and more aggressive lobe will let in more air in a short period of time (duration), which should equal more power. I don't see why people are using XER lobes on this cam since the lift is pretty weak, yet drivability is almost unchanged

LS1TORQ

iTrader: (1)

hey Ryan L. can you post up a vid of your idle and may be some driving, i would appreciate that!

Any plans for a FAST intake also?

Ryan L

I don't have any vids yet. I didn't have any plans on an intake manifold or heads, but now I wished I balled up and grabbed a ported FAST 90/92 and tried to shoot for 450-460 range. I didn't expect much more than 415rwhp with the cam so it never crossed my mind.