i dont think my last setup saw anything less than 7500, so ... no.

i think he said it was going to be 11.5 to 1, which i figured would be okay for pro 1's

IMO, at 11.5 to 1 the pro1's would be just a bit too big. I know they work really well over 12.5 to 1. I know it doesn't seem like that much of a jump in compression to warrant the cam change but the duration overlaps really bleed off cylinder pressure fast on the pro1's. I would stick as much compression in this thing as possible then run the pro1's

i trust your judgement. would going with the "high compression valves" help?

Anything to add compression will help make power. If 12/1 compression were all that was availible to me, I would try and build as much cylinder pressure as possible and that would use the Tuner 2's because of the lesser amount of overlap.

This isnt just about your setup... I thought we were comparing cams.

not trying to doubt your knowledge or anything, but would you happen to have dyno comparisons to back this up?

I have an engine program that I have built for years. Each of the bottom ends (in this case) were LSVTEC .030" overbore 11.7/1 compression set-ups. I called these "Clone" engines. All of these engines have been nearly identicle in build up so I feel this is a fair comparison.

Typically they averaged in 180-190 whp range with Skunk stage 2 cams. The last two I built, I switched to a set of Pro 1's and the HP on these engines dropped to the 170s. I replaced a set of the pro1's with a set of stage 2's and redynoed the car. Power was back up in the 180 range.

The second engine just came off of Joe's dyno making only 165. Joe did not make any cam adjustments at all, so I feel power would pick up a little bit if he had done so. I have yet to exchange these cams and do a re-tune.

I don't have any back to back testing and there are other variables as well that could contribute to the differences in power as well, but IMO the cams are too big for this low compression ratio.


EDIT: Notice that engine dyno you posted above is a 1.8ltr with CTR pistons. This will yeild almost 13/1 comression, so it is not a fair comparison. All it does show is that Pro1 like compression.

ya i saw that, thats why i said its more compression than what this guy will have. i basically was just looking for a comparison...shitty that it was on a high comp motor :-/

thanks for your explanation, my views have changed ;)

Well I guess I know which cams to look at. I got my parts back from AZ crank yesterday so you'll probably be hearing from me soon.:doobie::doobie:

wat stage 3 cams wud u recomend for me if i were to run ctr or itr pistons and a built head (supertech valvtrain)

none of them.

what bore size ced? oem 81?

82mm wat about itr pistons

i would say that no "stage 3" cam should ever be used on a stock displacement short block

yeah i hear the lobes are too big for the cam bore in the block, you gotta get your block align bored down the cam bore. I know a guy

lol wtf ^

sarcasm?

In the first picture I was like "I don't really see a problem, but they sure used a lot of assembly lube!"

Then I saw the second picture, looked back up at the first one, and was like "DAAYUUUUUUM!!!"

That's just ridiculous to me. How can that happen the way it did with roller rockers? Doesn't the rocker contact area actually make contact with the entire lobe?

Scary huh!!! i guess theres been a problem with the skunk cams there makin i guess.... i duno. only skunk part i rock is a shift knob...

I have a 5spd shift knob too!
Codey is borrowing it though.
The car i'm hopefully getting has their pro series front camber kit.
Hopefully that will be ok.

yeeesh thats crazy kyle

lets all be cool and use first names on here brad

dam them M25e camz are the shizz

Your name isn't Billy Bob??? I was wrong all this time...

lmao i'm not that redneck

yessir they are.... i can vouch that they make stupid power.