PI Swaps and Blowers

speedfreak98r

Banned

Jan 31, 2006

0

0

0

Houston Area

Aug 29, 2006

#1

• Aug 29, 2006

• #1

So I'm planning on doing the PI head swap, with some VT stage 2 cams. I still would like to get a blower eventually. I've gotten SOME info on compression after the swap, and from what I've heard, it should produce just about 10hp more than a stock PI motor. With this raised compression, is it safe to supercharge it? Or should I just get some nitrous? Any info, links, or advice would be appreciated.

Yes, I did use the search function, but I didnt find exactly what I was looking for.

-Freak

 

04DarkShadowGT

Member

Jan 31, 2004

474

0

17

Fort Wayne, IN

Aug 29, 2006

#2

• Aug 29, 2006

• #2

You can do it safely but cant run much boost. But you will not want N/A cams if you are getting a blower as they will not work that well.

Your best bet is to do as you plan with the Stage 2 cams and just use nitrous. That is what I am doing at the moment.

 

stangGT97

New Member

Dec 22, 2004

1,299

1

0

Boston area, MA

Aug 29, 2006

#3

• Aug 29, 2006

• #3

speedfreak98r said:

So I'm planning on doing the PI head swap, with some VT stage 2 cams. I still would like to get a blower eventually. I've gotten SOME info on compression after the swap, and from what I've heard, it should produce just about 10hp more than a stock PI motor. With this raised compression, is it safe to supercharge it? Or should I just get some nitrous? Any info, links, or advice would be appreciated.

Yes, I did use the search function, but I didnt find exactly what I was looking for.

-Freak

Click to expand...

you can also run thicker CR reducing headgaskets to make your car more boost friendly. If you really want to S/C your stang, arguably your best bet is to install upgraded hardware + Comp blower cams into your NPI heads, and run a PI intake. Thats what I would do... you'll make good power and you'll maintain a more boost friendly 9:1 CR, not to mention save big $$ by keeping your stock heads.

If you're not dead set on a blower, then a PI swap + nitrous is a good setup.

 

speedfreak98r

Banned

Jan 31, 2006

0

0

0

Houston Area

Aug 29, 2006

#4

• Aug 29, 2006

• #4

What are you running in the 1/4? I'm also planning on getting 4:10s.

 

speedfreak98r

Banned

Jan 31, 2006

0

0

0

Houston Area

Aug 29, 2006

#5

• Aug 29, 2006

• #5

Bump

 

stangGT97

New Member

Dec 22, 2004

1,299

1

0

Boston area, MA

Aug 29, 2006

#6

• Aug 29, 2006

• #6

speedfreak98r said:

What are you running in the 1/4? I'm also planning on getting 4:10s.

Click to expand...

who are you asking? If you're asking me, I've never been to the track. My guess is with what I have, I could hit mid 14s w/ a good launch. I know canadastang has the PI headswap w/ a 100 shot and he's into the 12s.

 

speedfreak98r

Banned

Jan 31, 2006

0

0

0

Houston Area

Aug 29, 2006

#7

• Aug 29, 2006

• #7

Hmm...I just want some more info on how much boost I could run. Would I get more power out of the stock heads, stage 2 cams, and a blower, or PI Heads, stage 2 cams and a blower?..Just not sure about all the options I have. I want to consider them all before I do this thing.

 

stangGT97

New Member

Dec 22, 2004

1,299

1

0

Boston area, MA

Aug 29, 2006

#8

• Aug 29, 2006

• #8

speedfreak98r said:

Hmm...I just want some more info on how much boost I could run. Would I get more power out of the stock heads, stage 2 cams, and a blower, or PI Heads, stage 2 cams and a blower?..Just not sure about all the options I have. I want to consider them all before I do this thing.

Click to expand...

Well, I'm not really sure about which would give you more power. With a 10.5:1 CR, I think you'd be limited to somewhere around 6psi of boost. As far as installing "stage 2" cams in your car... that depends entirely on the cam profile. Are you talking Crower, VT, Comp or what? TGJ could give you a better answer regarding aftermarket cams in an NPI head... hopefully he will chime in.

All I know is that NPI heads can flow pretty well once you remove the intake and cam restriction... which is why I'm leaning towards keeping my NPIs.

 

speedfreak98r

Banned

Jan 31, 2006

0

0

0

Houston Area

Aug 30, 2006

#9

• Aug 30, 2006

• #9

I want a cam that will work well both n/a (while I'm waiting on the blower), and with a blower..Can I have my cake and eat it too?

 

04DarkShadowGT

Member

Jan 31, 2004

474

0

17

Fort Wayne, IN

Aug 30, 2006

#10

• Aug 30, 2006

• #10

Yes and no, you will gain n/a power with blower cams, but not as much as cams meant for n/a. You will not want a n/a cam with a blower however. If you are going blower, get the blower cams first.

www.modularpowerhouse.com they have custom grind cams that are awesome.

 

speedfreak98r

Banned

Jan 31, 2006

0

0

0

Houston Area

Aug 30, 2006

#11

• Aug 30, 2006

• #11

About how much more power should I expect to gain on blower cams on a blown car, rather than n/a cams on a blown car? Also, about how much less power will I have n/a with blower cams as opposed to n/a cams?

 

04DarkShadowGT

Member

Jan 31, 2004

474

0

17

Fort Wayne, IN

Aug 30, 2006

#12

• Aug 30, 2006

• #12

Its not always a matter of power, I have no idea how much power you would lose. But n/a cams are designed totally different than blower cams. Your car will not run right and not be easy to tune with n/a cams on a blown car. You will not want to run n/a cams with a blower.

You will still see gains by using blower cams on a n/a car but not as much as n/a cams. If you are getting blown and want the cams first imo your only option is blower cams.

 

speedfreak98r

Banned

Jan 31, 2006

0

0

0

Houston Area

Aug 31, 2006

#13

• Aug 31, 2006

• #13

Hmm..Ok..Thanks guys. I'm going to be doing all this pretty quick, so I'll keep you posted.
BTW I'll be going with a Procharger D1SC..

 

tomustang

Psychotic Member

Founding Member

Jun 8, 2000

3,434

2

78

McLean Hospital

Aug 31, 2006

#14

• Aug 31, 2006

• #14

cometic gaskets ftw

 

speedfreak98r

Banned

Jan 31, 2006

0

0

0

Houston Area

Aug 31, 2006

#15

• Aug 31, 2006

• #15

tomustang said:

cometic gaskets ftw

Click to expand...

Those will lower compression right?
Where can I find those?
(edit) Just looked on there website...$118.95 each They must be pretty damn good.