Hey there I was reseaching some comp cams online and I wanted to now how they hold up to the crane cams for FEs in trucks. Im happy with the crane343901 but I found an intersting comp cam its the 33-222-3 high energy. It looks like comp offers a better and borader powerband as opposed to crane so im thinking if its worth to swap out the crane and try the comp. Does anyone on here have any expeirence with comps or know anything about them?

http://www.compcams.com/Technical/Cu...TML/98-101.asp

 

I've liked the couple Comp camshafts I've tried, but then again I was using the 255DEH grind, then stepped up to the 265DEH believe it or not, I'm gettin better mileage and power from the 265, with a 600 CFM Holley.

 

what kind of motor you runnin?

 

I like the Comp cams too, I am running a 292H in my 390 and I have used them in some other builds for other people I have done. they seem to have a better torque/horsepower response, but note to you all comp cams are ground 4 degrees advance so if you set one up on the zero on your timming chain it is really 4 degrees advance, but don't worry it makes it run a hole lot better!!!

 

Crane has more lift but less duration. Comp has less lift but more (intake) duration. Probably not enough difference in the two cams to be worth the change if you already have the crane. If you don't have the Crane already then I would take the Comp. I think the extra duration would help a tiny bit.

-Scouder

 

Yeah I also noticed that the valve lift was quite a bit less then the crane. Also what about where it says that the RPM operating range is 1200- 5200? Is there any truth to this?Can I get some more high RPM power by switching?

 

Johnny, is the idle smooth or slighy racy on the 265? Thats the one Im sorta leaning towards right now. It seems comp has many more options then crane.

 

What are you looking for from your engine? Street high performance, towing, low end stump pulling? Also what engine are you running, is it the 352?

 

Yes its the 352. Im looking for low-end power but wouldnt mind a little more high end. Id say Id peak at 4700 right now and thats fine just looking for something a little more peppeir simply because I think I can get a little more with a different cam. Im not looking for a high RPM racer although it does see see street racing and the occasional run at the track. I got excieted with the comp because of the supposed broader powerband.

 

Since it's a 352 and not a 360, you can get away with more cam. The 352's have a higher compression ratio than the 360's, I think it's up around 9.5:1. You could very safely step up to the Crane 941 cam, or the Crane 801.

On the Comp side, I think the 33-222-3 would be a step down from the Crane 901. It has less duration and lift. It's a stump puller cam. If you want to step up, the Comp 33-208-3 dual energy cam looks like the good one to use. It'd give you quite the potent little 352. Plus, it has more duration and lift on the exhaust to work better with the stock heads.

 

Thanks for the info. But Im worried it says superior high end power and choppy idle and well I want more low-end and kind of a smooth idle if I can. How choppy will it be? I can take some choppienss but this is a truck and I wont to act kinda like a truck. I guess my biggest concern is losing low-end. If I can get some high-end and low-end with the comp 275deh then heck what the heck may as well try it. What kind of cam you runnin rusty?

 

Right now in the 360 I'm running the stock cam. It sucks for high performance, it's a stump puller.

I'm going to be using the 941 in my 390 build. I find it interesting that the Crane website rates it as performance and fuel efficiency, with a good idle. It's only a few degrees off of the Comp 33-208-3, with more lift. They're VERY similar cams. When I put both in DD2k with the same engine (a 352 with stock heads and 9.5:1 compression) the results are for all intents and purposes identical. It shows the 941 being a little more radical with more top end hp, and a little lower low end torque. But the difference is barely enough to notice. Really, the Comp 33-208-3 is somewhere between the Crane 901 and 941, a lot closer to the 941.

I think Comp over-rates their cams. It'll work fine. Personally, I'd run the 941.

 

im gonna check out the 941.

 

I'm running the 33-224-3 in my stockish 390 (0.040" over, ported/valved heads, 500cfm 2bbl... otherwise stock).
It's power band is advertised to be 1500-5500... but, by ear/speedo/butt/guess it doesn't really come on till mid/high 2000's... possibly as much as 3000. It does pull hard up there, but, I typically don't use my truck that way.
It's pretty much asleep otherwise.
On the dyno it shifts at 4800 anyways, so, the extended rpm potential is not being used by my tow oriented C6 (1800rpm tow stall, modified shift/cooling stuff, and other things I don't understand).
I wish I had gone with the 33-221-3 or maybe the 33-222-3 for the way I use the truck... daily driver now, soon to have added weekend mustang tow rig duty.

Good Luck.

 

Well for whats its worth..I made a post on my 432 build..OK 432.7 build..I talked to Keith at Keith Craft this afternoon...and with the crane cams ..when the truck is as heavy as mine..5000lbs.. you need to advance the cam by 4 deg... I think Scoot said that also... Russ..