nickp

whats the best and/or biggest comp xfi cam for a full bolt on 95 6 speed firebird? its for my friend & he cares as much about the way it sounds as the way it performs. i was unsure about valve to piston clearance tho. he will be running beehive springs. thanks_ Nick

96capricemgr

None, they are underperforming valvetrain eaters.

henryz28

I would use a cc503. With stock heads bigger is not better.

Z-RATED94

My advice, re-read the last two posts. You or your buddy won't be sorry.

seawolf06

Lunati voodoo cams- I think they are a better design although I have never had a chance to run one.

Arctic White 91 RS

The only engine dyno testing I've seen on an xfi cam showed it losing 1 fwhp and otherwise being the same. It was a small block Ford engine dyno test. I didn't find that too impressive.

nickp

i'll just tell him to get the 503. has anyone had luck with the xfi cams? i already bought a 468 for my 383. i called comp cams tech line & thats what they recomended. maybe i should sell it & get a gm 847, instead.

seawolf06

I made 372rwhp on a mild 355 build with decent ported heads. I think it's a good cam, but I have seen several people with valvetrain issues. Should be better with a stroker since your rpm range is lower.

blue 79 Z/28

custom cam for stock long blocks by advanced induction

nickp

thats pretty strong, was that with the 918 beehive springs? does it have good bottom end power, from like 2500rpm?

seawolf06

It was with beehive springs, but stouter than the 918's. It's actually 374/363 now that I look at the graph again. It's been a while, lol.

Here's the thread:

https://www.camaroz28.com/forums/sho...d.php?t=517745

c5formula

give lloyed elliot a call an have him get you a custom cam. its gonna cost as much as the cc503 but its gonna be specifically for your application. so you will see more gains from it an he can have it cut to sound the best possible. plus he can tell you what springs would work with your combo.

http://www.elliottsportworks.com/contact.html

87bandit

I made 325rwhp through an unlocked stalled auto, midlength headers, 13x,xxx mile motor on drag radials with the cc503. I imagine this cam in a lower mileage car with lt's and 6 speed shouldn't have a problem hitting 350rwhp

CreatiVe2

i was goign to go CC503 for heads cam project.. but that turned into a 383 Project that i am Using a XFI cam on. good for 383/forged bottom end, not so good for bolt ons i'd say. actually, the cc503 is for sale now.. 112LSA if you didn't want to deal with a custom grind.

nonosvt

Isn't that the cam u got off me? I made 365rwhp with a 230-236 Xif cam. Car is a vert and runs 7.50 8th at 93 MPH with stock heads on motor.