Which Cams Would Be Better For P&P NPI Heads?

[mustangman9812]

Which cams would help better for my Port & Polished NPI Heads?

Crower Stage 2 NPI
VT Engines Stage 2 PI
Or Other (Please Tell)

 

[Pennywise2]

VT stage 2 cams no question.

 

[TGJ]

Comp 270's will work. Which Crower's do you intend to use, PI or NPI version. VT Stg 2 cams will not work without other mods to the NPI heads. I wouldn't use VT cams even if they did fit.

 

[four six]

Hands down VT if they will work. Comp is also good

 

[WashburnGT]

Comp 270's will work. Which Crower's do you intend to use, PI or NPI version. VT Stg 2 cams will not work without other mods to the NPI heads. I wouldn't use VT cams even if they did fit.

I think this might be the first negative comment I've seen about VT cams. I love my VT stg II's. Love the power and love that idle...
I don't know if they will work with an NPI engine though. The best way to find out is to e-mail VT and ask. If they dont work I think comp 274 NPI cams are close. They have about the same profile.

 

[jasonh_86]

I would have to say vt stage 2 for sure. they're great cams.. I loved mine! you could always but a set of pi heads for $400 and use the vt's.. instead of p&p'ing your npi heads.

 

[TGJ]

The Comp 274 NPI cams are very different than the VT stg 2 N/A cams.

VT Stage II, 225/235 at 0.050, 0.560/0.575 lift, 108 LSA

Comp 274, 236/240 at 0.050, 0.500/0.500 lift, 114 LSA

I have seen Comp 262's out perform VT Stg 2 N/A cams with identical mods. VT cams are difficult to get to idle correctly compared to other cams.

I am extremely happy with the Crower's I have in my P&P NPI heads. I am running the Crower PI Stg 2 SC cam in my car. Very similar to the Comp 270 but more lift. You will need to modify the heads to run more than .545 lift which is I am recommending the Comp cams.

I have seen my car compared to a VT 5.0L Big-Bore that is using the VT Stg 2 N/A cam. All I am going to say is that the VT car has a better supporting cast than my car and is making less power than me.

 

[jasonh_86]

my vt stage 2's never had idle issues.. but they also never had ptv contact issues that comp cams has had.. they made great power as well

 

[TGJ]

Comp's do not have PTV issues either, improper installation causes PTV and there is cases of improperly installed VT cams having PTV issues. I have posted about a few of them here in the past.