Average hp/tq numbers for npi's with boost...

[Lee12609]

do a leakdown and compression test. mine at over 200k was fine.

suspension, tires, etc had nothing to do with it as we only ever ran from a roll. the transmission never gave me a problem when me and him raced because it was always right after startup, before any "noticeable" slipping started. i dont know i just have a bad taste for nonPI now.

 

[97stanger]

my new motor is still non pi block!!! muahaha

 

[justinschmidt1]

My NPI with 11-12 psi with a procharger was probably making 350~ rwhp....nothing special but definately would beat up on N/A cars.


Depends on what type of forced induction and how much boost you run.

Unless your willing to run 11-13 psi like me and blown were doing, your not really gonna make too much power...lol

8 psi on a npi and you may not even break 300 to the tire haha

 

[DropTopPony]

Just for the sake of a Stock NPI comparison, my neighbors bone stock NPI with a Stock pulley Vortec made 275rwhp.
Swap the intake and cams like B97 did and it really wakes things up.

 

[97stanger]

I agree with the fellas, on a bone stock non pi motor it seems like a waste of money to put a blower, but some minor mods like a PI manifold, some bolt ons, intercooler etc can really wake these cars up.

 

[Lee12609]

I agree with the fellas, on a bone stock non pi motor it seems like a waste of money to put a blower, but some minor mods like a PI manifold, some bolt ons, intercooler etc can really wake these cars up.

that is exactly what i was saying. if you dont plan on doing at the least a PI intake and bolt ons its worthless, especially with a high mileage motor, you'd be better off starting with a PI setup and make about as much as the stock bottom end can handle with ALL stock parts.

 

[98gttorque]

I agree, I was thinking about adding a blower but its alot of money and a good gain but I think you can spend just as much money and get more hp and tq with pi swaps, am I right ?

 

[Untame-d]

i would suggest going with the PI swap with quality bolt ons, after gears, then if you arent satisfied throw a bottle in the back and be done with it.

Now who the hell would do that in their right mind? :tongue3:

 

[Lee12609]

i would suggest going with the PI swap with quality bolt ons, after gears, then if you arent satisfied throw a bottle in the back and be done with it.

Now who the hell would do that in their right mind? :tongue3:

LOL, and i'm sure you're happy with your setup.....

 

[sneaky98gt]

I made 325 rwhp and 335 rwtq on less than 7 pounds of boost. And that's with the "crappy" FRPP/SVO supercharger. All I have done is stock PI cams, K&N filter, 75 mm TB, and an offroad Prochamber. This is through the stock automatic as well. Couple more pounds of boost and long tubes would put me over 350. A 5 speed with these same mods could possibly see high 300s.

I ran 12.65 @ 108 with my setup (stock gears and auto) and a 500 feet DA. Most boosted PI cars in my area aren't going a whole lot faster than that.

However, if I could do it all over again, I'd start out with a PI motor (whether it be a swap into my car, or a whole new car altogether) and boost it, mainly for the reason that there's so much more available for the PIs (Tork Tech's kits, Kenne Bell, etc). I'm still happy with my NPI setup, though.

 

[justinschmidt1]

I made 325 rwhp and 335 rwtq on less than 7 pounds of boost. And that's with the "crappy" FRPP/SVO supercharger. All I have done is stock PI cams, K&N filter, 75 mm TB, and an offroad Prochamber. This is through the stock automatic as well. Couple more pounds of boost and long tubes would put me over 350. A 5 speed with these same mods could possibly see high 300s.

I ran 12.65 @ 108 with my setup (stock gears and auto) and a 500 feet DA. Most boosted PI cars in my area aren't going a whole lot faster than that.

However, if I could do it all over again, I'd start out with a PI motor (whether it be a swap into my car, or a whole new car altogether) and boost it, mainly for the reason that there's so much more available for the PIs (Tork Tech's kits, Kenne Bell, etc). I'm still happy with my NPI setup, though.

Youve also gotta realize that you have eliminated the two biggest restrictions of the NPI turd engine.

You have PI cams and your blower eliminates the terrible NPI intake.

A NPI car with a vortech on 8 psi and a NPI car with a vortech and 8 psi with PI cams and PI intake is a very differant thing.

Theres probably a solid 50 rwhp differance between those 2 setups ^


a full NPI car with a vortech pushing 7 psi like your blower wouldnt even touch 300 rwhp

 

[97stanger]

+1 with justin, between just putting on intake/cams I think it was a difference of like 60rwhp, and thats through a built auto and a high stall and to the wheels not crank hp

 

[sneaky98gt]

I made 325 rwhp and 335 rwtq on less than 7 pounds of boost. And that's with the "crappy" FRPP/SVO supercharger. All I have done is stock PI cams, K&N filter, 75 mm TB, and an offroad Prochamber. This is through the stock automatic as well. Couple more pounds of boost and long tubes would put me over 350. A 5 speed with these same mods could possibly see high 300s.

I ran 12.65 @ 108 with my setup (stock gears and auto) and a 500 feet DA. Most boosted PI cars in my area aren't going a whole lot faster than that.

However, if I could do it all over again, I'd start out with a PI motor (whether it be a swap into my car, or a whole new car altogether) and boost it, mainly for the reason that there's so much more available for the PIs (Tork Tech's kits, Kenne Bell, etc). I'm still happy with my NPI setup, though.

Youve also gotta realize that you have eliminated the two biggest restrictions of the NPI turd engine.

You have PI cams and your blower eliminates the terrible NPI intake.

A NPI car with a vortech on 8 psi and a NPI car with a vortech and 8 psi with PI cams and PI intake is a very differant thing.

Theres probably a solid 50 rwhp differance between those 2 setups ^


a full NPI car with a vortech pushing 7 psi like your blower wouldnt even touch 300 rwhp

Oh, no doubt. That's one of the points I'm making: with a couple of very simple modifications (PI cams, PI intake), the NPI headed cars will make almost as much as the PI headed cars. My car proves that.

My other point is that, if I had to do it all over again, I'd chose a PI motor to begin with, not entirely because it would make more power (however much, and it would, there is no debate there), but because there are so many more options out there for the PI cars (Kenne Bell, Tork Techs, several turbo kits, etc.).