b18c with pr3 head
compression between 13.2-13.5:1
ported head
victor-x ported manifold
72mm throttle body
tri-y big tube header from rage performance
3" exhaust

which cam?

skunk2 pro1 pro2 pro3 ? or a different brand?

after i get a few repsonses i will tell you what skunk2 told me

 

Skunk2 stage2

 

i have the old skunk2 stage 2 cams in the motor now. looking to upgrade.

 

I'll go with the pro 2's

 

what is the displacement?

 

sorry i meant skunk2 pro2

 

Pro 2's

 

81x87.2 or 1797cc hehe

skunk2 told me i was borderline on needing the pro3 and that either the pro2 or pro3 would work great in my motor....im still kinda in shock about needing a cam that large.

no one recommends rocket, bisi, endyn, or anyone else?

 

Any reasonable designed cam ~12 mm of lift or a little more will work well. Pro3's nah.

 

I thought of the Rocket M22x's as a possibility, they would be a bit more on the conservative side. The M22xx's would also compliment that motor well with the compression your running but be a bit more aggressive

 

How about possibly going with a custom grind? There really arent alot of new cams besides the bisi. But than again his product usually has alot of voodoo surrounding it and lil third party testing so dont know if ur the gambling type.

 

i vote for the m24x

 

what are the specs on those?

 

I vote my custom cams..


Cam Int. Duration Int. Lift Exh. Duration Exh. Lift
M24XX 298 12.7 305 12.1

I'm almost done in the making a street king cam.. i'll be testing vs the pro2's.. but thats later to come. If you want a custom grind, lemme know i can make you anything.

 

LOL thought i was the only one that thought Bisi might have voodoo **** in his engines!! no wonder his na sohc makes like 500hp

 

If it were me personally I'd go with Pro2s but, somewhat contradictingly, would recommend going Pro3s to you.

I had JUN IIIs with a similiar build many years ago, minus the port jobs. I defintely recall being in the 13.5:1 range with the same displacement. Correct me if I'm wrong but I heard the Pro2s lifts were almost, if not perfectly, identical to what the JUN IIIs lobes measured.

If that's even relatively true, although the Pro2's will be a beast in itself, I always felt a built head (I only had crower retainers/springs) with bigger cams could've been benificial. How much in comparison? Can't say. But what I can say is that the JUN IIIs/Skunk Pro2s will make you wonder at 9000rpm what it would be like had you chose the Pro3s. Good luck mate.

 

pro2's ramp speed is different from the junIII's.. life is different as well.

 

when i tuned it i didnt even start pulling fuel out till after 8,800rpm with the skunk2 stage2 cams...i would imagine the pro2's would be able to carry the power past 9k just fine. i dont have a problem with spinning the motor hard as it was built for it. plus ive only put about 1,800 miles on it in the last 3 years so maybe the pro3 would be a better choice.
i feel like the motor is in that grey area and i should have gone 2liter
the crank and rods are stock gsr but they have both been worked pretty well...cryogen, magnaflux, etc
the bottom end is all ARP rods, mains, etc
the whole rotating assembly was balanced....this motor was originally built as an endurance motor to do scca/time attack etc...never intended to drag race it.

 

The M22's both have the exact same VTEC lobes, the xx versions have larger primary lobes making them more "pro series like". I think the M22xx cams would work awesome, the pro 2's would probably make slightly more power in the top end. I personally wouldn't go pro 3's in that motor unless it was at least a 2L. M24x's might be good but I never saw enough people that run them, post results.

 

this is why i feel stuck...to many options and variables...im guessing i should just jump off the cliff and go for the pro2's.

 

For my car the M22xx cams are probably "best" for me. I learned that through swapping out my M22x cams for pro 2's that are in there now, I've looked at builds similar to mine and yours that ran pro 2's on the dyno and that's what I would choose to run if I were you.

 

Purchase the pro 2's and see if you can "borrow" a set of Pro 3's so that way you know which cam truly works the best. I have a feeling your gonna buy the 2's and still wonder if the 3's would have made more lol

 

you know it
i will be dreaming of pro3 cams if i buy the pro2.

 

Just remember the PURPOSE of your car man. not just power, but actual use. I thought the same thing in my build, and wound up going DOWN the chain to get the powerband I was looking for. Don't let your vision of purpose get impeded by stupid dyno numbers. look at what you're trying to do with this thing...

You may dream of Pro3s, but then you'll wake up and be happy that were a little less aggressive and had more usable power in the morning.

 

exactly...which is why im sure power in the mid band will be better with the pro2's. hopefully mid band will be better then the current cams. speaking of cams shodan arent you selling some?