Headswap and blower

navarro98gt · Apr 29, 2009

Has anybody supercharged there PI headswaped cars? I know that it can be done with a spot on tune but has anybody here actually have real life experience with it? Dyno numbers? Track times? I?m looking into the Mongoose kit and blower cams from MPH. Thanks :headbang:

blown98gt · Apr 29, 2009

I did, but then switched over to custom grind cams.. I made 600 range on pi cams and a D1sc.. I never got to run it at the track like this but the MPH cams are really nice

navarro98gt · Apr 29, 2009

I?m assuming that wasn?t on the stock block and internals. Anybody do it on stock block and internals??

97stanger · Apr 29, 2009

i dont know man. There are plenty of safer ways to reach the limits of these stock bottom ends without even touching the heads. I'm at 400/400 with stock NON PI heads and only stock PI cams

navarro98gt · Apr 29, 2009

blown97stanger said:
i dont know man. There are plenty of safer ways to reach the limits of these stock bottom ends without even touching the heads. I'm at 400/400 with stock NON PI heads and only stock PI cams

Yea but i don't really want to swap the PI heads back to NPI's. By the way, what converter are you running?

97stanger · Apr 29, 2009

ohhh, you already have PI heads on the car? Sorry if I missed that.

I run a BC-Auto multi disc lockup 3600 stall

chris98gt · Apr 29, 2009

Im sitting on 376/360 rwhp/tq with my pi head swapped car and stage 2 npi cams plus the stuff in my sig. I'm using the factory thickness head gaskets and running 11* timing on 93 octane. I've been running it this way for almost 2 years now and best 1/4mile was a 12.27 @ 112mph last november.

97stanger · Apr 29, 2009

Nice setup there man. What kind of rime/tire setup you running there?

sorry to threadjack

navarro98gt · Apr 29, 2009

chris98gt said:
Im sitting on 376/360 rwhp/tq with my pi head swapped car and stage 2 npi cams plus the stuff in my sig. I'm using the factory thickness head gaskets and running 11* timing on 93 octane. I've been running it this way for almost 2 years now and best 1/4mile was a 12.27 @ 112mph last november.

Just what I wanted to hear. Any particular reason your running npi cams??

blown97stanger said:
Nice setup there man. What kind of rime/tire setup you running there?

sorry to threadjack

Don't worry about it man, I'm also curious as to what kind of tire he,s running, and his 60' times.

navarro98gt · Apr 29, 2009

blown97stanger said:
I run a BC-Auto multi disc lockup 3600 stall

Nice, I've been in contact with Darrin @ B.C. You have any problems with your converter? I've herd that they have problems locking up at WOT. I'll most likley be ordering a 3800 stall speed converter this Friday, I've been debaiting between B.C. and Dirty Dog.

karrarararararar · Apr 29, 2009

blown97stanger said:
i dont know man. There are plenty of safer ways to reach the limits of these stock bottom ends without even touching the heads. I'm at 400/400 with stock NON PI heads and only stock PI cams

don't want to thread jack either but how much boost are you running with your setup?

DropTopPony · Apr 29, 2009

I'm about to do it in a few weeks. I have all the parts to build my forged SB but don't have the extra cash to get the Teksid block properly line honed bored etc so i'm throwing my blower on. I already have Fox Lake PI heads and i'm gonna throw in my VT blower cams and see if it lasts all summer. I'm just gonna keep it at 6psi and not push my luck. My friend ran his with 8psi and a Vortech for 3 years with out an issue. He had a good tune and always ran 93 octane.

chris98gt · Apr 30, 2009

I'm running 15x6 in the front and 15x8 prostars in the rear with m/t drag radials. Best 60' was 1.72 on that 12.27 pass. I didn't expect to put the blower on this setup at first so I did the head swap and npi cams before I even had the blower. I then got a great deal on the whole procharger kit and decided to try my luck.

navarro98gt · Apr 30, 2009

DropTopPony said:
I'm about to do it in a few weeks. I have all the parts to build my forged SB but don't have the extra cash to get the Teksid block properly line honed bored etc so i'm throwing my blower on. I already have Fox Lake PI heads and i'm gonna throw in my VT blower cams and see if it lasts all summer. I'm just gonna keep it at 6psi and not push my luck. My friend ran his with 8psi and a Vortech for 3 years with out an issue. He had a good tune and always ran 93 octane.

Well keep us posted on the results. I'm curious to see what kind of numbers that combo will produce. Do you know what numbers your buddy put down?

97stanger · Apr 30, 2009

I see about 14psi, intercooled. With the blower cams in I expect to see about 12psi.

DropTopPony · Apr 30, 2009

navarro98gt said:
DropTopPony said:

I'm about to do it in a few weeks. I have all the parts to build my forged SB but don't have the extra cash to get the Teksid block properly line honed bored etc so i'm throwing my blower on. I already have Fox Lake PI heads and i'm gonna throw in my VT blower cams and see if it lasts all summer. I'm just gonna keep it at 6psi and not push my luck. My friend ran his with 8psi and a Vortech for 3 years with out an issue. He had a good tune and always ran 93 octane.

Click to expand...

Well keep us posted on the results. I'm curious to see what kind of numbers that combo will produce. Do you know what numbers your buddy put down?

I would probably guess i will be in the 350 range with the small pulley on and very soft tune. My friend was making about 330rwhp with a basically stock PI swapped car and Vortech base kit. I know he wishes he still had it.