Crower Stage 2 Blower Cams

9psi 98 · May 11, 2007

I'm gonna swap my cams, after talking to a few people and reading up a bit I figure that most of my boost is going out the exhaust before I get a chance to put it to good use. I want Stage 2 blower cams, but there are two. By looking at my list of mods, which should I go with. The high lift or the low lift? Any clearance issues I should worry about? I have stock mildly ported non-PI heads, no idea about valve relief cuts in my pistons either....although I could check with a spark plug pulled and a piston at TDC....

(LOW LIFT)**62812-2 Stage 2
Designed specifically for supercharger applications for street use.
RPM range: 1750 to 6500+ on 4.6L, 5.4L will be lower.
258 Lobe 258

272 Valve 272 212 Lobe 212

230 Valve 230 .532 / .532 lift w/1.8 kit.

(HIGH LIFT)**62802-2 Stage 2
Designed specifically for supercharger applications for street use.
RPM range: 1500 to 6500+ on 4.6L, 5.4L will be lower.
262 Lobe 262

276 Valve 276 216 Lobe 216

234 Valve 234 .581 / .581 lift w/1.8 kit.

I got all of my info from http://www.crower.com/cat/domestic/ford/mustang_camshafts.shtml

DropTopPony · May 11, 2007

I believe the low lift are for NPI heads and high for PI heads.

Thomas_W · May 12, 2007

DropTopPony said:
I believe the low lift are for NPI heads and high for PI heads.

DING DING DING.. exactly

DropTopPony · May 12, 2007

But Crower has offset retainers that may allow you to run the PI st 2's in the NPI head...I would call Crower and speak to them directly about it.

9psi 98 · May 12, 2007

good enough for me... thanks O0

jfor441 · May 12, 2007

If they haven't sold yet, there is a dude on a local board selling that exact set you are looking for, for $500 including cams, springs and retainers. Here is the link : http://www.hsvracing.com/phpBB2/viewtopic.php?t=14376

9psi 98 · May 13, 2007

jfor441 said:
If they haven't sold yet, there is a dude on a local board selling that exact set you are looking for, for $500 including cams, springs and retainers. Here is the link : http://www.hsvracing.com/phpBB2/viewtopic.php?t=14376

Damn, that's a good deal. But it's not really a good deal when I can't afford it right now.... 3 more weeks and I'll be able to FINALLY work overtime, I'm pretty much limited to my base salary right now and that's pretty much eaten up for the most part. I'll keep an eye on them.

ripper · May 13, 2007

Even at low lift with the 230 duration is way better than the 184 of stockers.

9psi 98 · May 16, 2007

Ok, "another newbie to mod motors question" for all of you. So I have the NPI heads apparently with 99GT cams, which would be PI cams right? How do I have NPI heads with PI cams in them? If I were to order the crower st.2 cams that are only supposed to fit in the PI heads they would work cause I already have PI cams in there right? What's the deal with the "bolt on" cam gears that are 2000+ (Year). I'm pretty sure that I wouldn't have them and the cam and gear would be one piece right? ...I just want this car to run right and it sucks not having a garage to check it out.

Thomas_W · May 16, 2007

pi cams fit npi heads b/c they are low lift still. if you put pi crower st. 2 cams in npi heads the valve followers will bottom out on the heads locking up the cams.

windsor 2v motors ysed a pressed on cam gear. romeo motors and ALL aftermarket cams require bolt on cam gears. if you aren't sure which style you have, unbolt the driverside valve/cam cover. if you see a bolt on the cam holding the cam gear in you have bolt ons and dont need to order anything extra.

if you dont see a bolt, you need to order the cam gears.

you must install npi aftermarket cams in npi heads, to avoid bottoming out the cam followers.