Hey guys, I have a 05 avalanche 2500 i'm thinking of running the 264 because I want to wake it up mid range from 3-4500 or so, I know the 258 will help 3k and below. I have 4.10 gears and have read that the 258 will only be good below 3k with those gears.

I'm not looking to go all out with a 270. I just want more performance all around and not to off the wall.

Pro's cons of this cam?

How was mileage affected?

I will be running full roller rockers as well.

Any dyno info on this cam? On a stock setup?

Thanks

 

Comps lineup:
254: 202/212 .510 .510 115
258: 206/212 .510 .510 112
262: 210/218 .513 .507 114
264: 212/218 .510 .510 114
270: 218/224 .510 .510 114

Pros: All of these cams work great on stock heads.

Cons: All of these cams are smaller than our smallest cam (BP-202). It's only a couple points larger than the 270, but its what we consider a towing oriented cam for these engines. The BP-202 cam sounds stock. If you want a more hot rod sound with better mid-range and top end, the BP-203 cam is what we encourage everyone to run - especially with 4.11s.

Your mileage should increase with tuning on any cam you choose, provided you can keep your foot out of it.

You will need to replace you stock springs with any cam swap. You will also need rotator eliminators for the aftermarket springs. Roller rockers are always a good idea - you'll pick up another 18hp from the reduction in friction.

Cam / Springs / Roller Rockers Kit Video
http://www.youtube.com/watch?v=irGZbtNyfls

I don't have cam-only numbers, but I do have heads / cam package numbers. This way you can get an idea of powerband.

202 Cam / Heads


203 Cam / Heads / Roller Rockers / Intake Manifold

 

Are these numbers at the flywheel or at the ground?

 

yes I would also like to know this?

 

Always flywheel numbers from us. There is far too much variance between the 4l80e and Allison to give rear wheel numbers, but a few of our videos have rear wheel numbers from our customers.

 

ive got the biggest cam comp made at the time, and well it still sucks. My next cam will be one of raylers huge one or custom huge for turbos.. The one i have now is smaller than the cam in my corvette, not to mention the wifes stock denali has more a "cammed" sound epic fail lol.

to be honest unless you go big with like raylers stuff, id save your money.. ive done the cam springs stuff, not impressed, did the whipple not impressed, then went with the turbo stuff, and it was a lot fun