my head has crower valvetrain, sk2 cam gears, and I am leaning towards some type of crower cam, but I am not sure if they are going to be the best choice for me.

i don't have enough to buy an exspensive cam for one thing and i'm only yielding 11.5 c/r 81.25 bore in my ls/vtec.

I was thinking the crower 402, 402a, BC3+??????? Any other suggestions or personal experience. I can find both used for under $500....

Thanks

 

im gonna go out on a limb and recommend maybe Rocket M22 cams or the Skunk2 Pro Stage1's, the Skunks have already been posted up in the All Motor section yielding some good power on mild set ups, I think most I saw was 195whp, havent seen any dyno charts on the M22s but heard all good stuff about Rockets stuff.

 

how about some blox type b's

 

Skunk 2 Stage2's, Blox B's, Jun 3's.

 

Where in the powerband do you want to emphasize?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">Where in the powerband do you want to emphasize?</TD></TR></TABLE>

That is a very valid question. Being an ls/vtec, I would personally opt for a higher lift/less duration camshaft, and I would point you towards a S2 Pro 1. I would do a S2 Pro 1 over and S2S2/Blox B/Wicked stage 2 because they are a more "peaky" cam. Also the RM M22's are more of a top end camshaft. Lookin to rev to 8.5k?? I personally think the S2 Pro1 would be a good choice.

 

The M22's are actually designed to have a very strong midrange and be able to continue to make power much higher than most cams with that level of midrange. They just need some compression, and he seems to have enough. He may need to spend more money than he intended to though, and he will have a relatively difficult time finding a used set.

 

The M22's do have a solid mid-range, but like I said....for the motors that don't like to rev high I personally like the S2 Pro1's better. If he had a higher revving motor, then i would suggest the M22's............................................. ...

 

IIRC, doesn't the Pro1 have the same vtec lobe as the S2?

 

S2 Pro1 = 12.6 lift

S2S2 = 12.3 lift

 

There are a whole lot of things about cam dynamics we could go into here, but suffice to say that I would not call the M22's a top heavy cam.

BTW, I just want everyone to know, I AM NOT saying that the Pro1's may not be the best choice here. I am just saying to not count out the M22x's(or the M22xx's for that matter).

 

BTW, to the original poster; what are the rest of the parts you have on your motor? There may very well be other things you should improve before you even think about cams.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote"> I am just saying to not count out the M22x's(or the M22xx's for that matter). </TD></TR></TABLE>

why not just make is XXX and call it a good time?

to me seems like its a mild ls/vtec build, only 11.5 cr, probably like GSR head wth P30 pistons, just my guess.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">BTW, to the original poster; what are the rest of the parts you have on your motor? There may very well be other things you should improve before you even think about cams.</TD></TR></TABLE>

Well It's an ls/vtec .25 over ITR pistons, b16 head milled .030, ITR intake manifold, DC 4-2-1 headers, ported throttle body and little things here and there for the most part, chipped p28. I just want to add the cams and see about other stuff later just for immediate hp.

I want to have good power from all around obviously, but most of it in the 6000-8400 rpm range...

 

I would get a better header before I even think about cams. Always optimize the outside of the motor before you touch the inside.

 

sounds like a pretty heavy mill... is it me or does it sound like that setup should be yeilding closer to 12.0:1???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">I would get a better header before I even think about cams. Always optimize the outside of the motor before you touch the inside.</TD></TR></TABLE>

I haven't been in the market lately, the car has only 11,000 after it's rebuild in 2003 and is kept at my parent's place. So I don't know what's a good header. My DA actually is dropped pretty low and the DC 4-2-1 sits equal to the lowest part of the frame. I think anything like a 4-1 would bang whereever I went.

Also, will any cam work on my crower dual valve springs? Secondly, some guy wants to sell his crower 402 cams for $320 so that's why I am considering that investment as it would net more hp than most of the other practical bolt-ons.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92hatchattack &raquo;</TD></TR><TR><TD CLASS="quote">sounds like a pretty heavy mill... is it me or does it sound like that setup should be yeilding closer to 12.0:1???</TD></TR></TABLE>

I think when I did the actual calculation, it was around 11.8 I think... not sure, but I just roughly say 11.5, but I guess there is a big difference...

 

by the way, can anyone find any dynos of the skunk2 pro 1's ... ive been looking, but cant fing much on them

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rochesterricer &raquo;</TD></TR><TR><TD CLASS="quote">I would get a better header before I even think about cams. Always optimize the outside of the motor before you touch the inside.</TD></TR></TABLE>

I agree. I would personally get the header and cams first, either or, but probably header first. If your aiming to make the most power between 5500 and 8200 or so, the stock TB and manifold would be my choice with stock injectors, but JMO. A 62mm TB IMO, even a 60mm TB, is big enough for an LSVTEC 81mm bore, especially up to 8500 rpms . I think it's much more economical that way too. But then again, if you go bigger with the TB/mani combo later, then you have to tune again. So, it's all trial and error which can cost $$$, and depends what engine speeds the motor will see.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">Skunk 2 Stage2's, Blox B's, Jun 3's. </TD></TR></TABLE>
anyone ever ran the blox HSL high speed lift cams? more aggressive than these cams. just wondered if anyone had experience with them?