How much horsepower can a P1 support?
09-17-2011, 01:26 PM
#1
How much horsepower can a P1 support?
I know the theoretical maximum horsepower would vary greatly depending on many variables. For instance, just the difference in displacement between the 4.8, 5.3, and the 6.0 would net different percentage gains.
I currently own a 2000 Silverado, regular cab, short box. I had sold some things on craigslist when I came across a deal on a complete P1SC setup. The previous owner had it installed on a 2000 Tahoe. I asked for advice from this site, and ultimately purchased the kit from him.
That's when my real research began. I've logged many hours on this site reading about procharger setups, roots style setups, and turbo setups. (I'm starting to think I should go turbo in the first place.) What I was looking for in the beginning was what supporting mods would be a good idea given the extra stress the supercharger would be adding.
I found out that I should at least run a shift kit, a transmission cooler, boost gauge, wideband gauge, and a tune.
The guy that had the kit prior to me actually used different injectors and not the Fuel Management Unit. (I've read the FMU is a pretty terrible setup.)
What this has turned into (thanks to this site) is a 4L80E swap, 3000 stall Yank converter, NP149 transfer case, and the appropriate adapters. Also, lowering spindles and lowering shackles. (All bought second hand, by the way.)
Still on the list are front and rear sway bars and maybe a LS2 cam/Z06 springs.
I'm in parts collecting mode and I'm getting side tracked.
So when I'm done collecting parts and I get everything installed, I figure I should be able to push somewhere around 525 horsepower. What I'd like to do is possibly swap in a 6.0 some day. If I do that I would build the LQ4 with a forged bottom end. I was thinking at that time I would rebuild the P1 into a D1. Or sell the P1 and buy a D1.
What I'm wondering is, how much power can the P1SC provide? Is 525 nearing it's limit? How much power can the D1 provide? What's it's limit?
This truck needs to be tame enough for my wife to be able to drive it. It is a truck and it does have truck duties to perform. Sorry for the long post, but that's kinda how my posts are. LOL.
I currently own a 2000 Silverado, regular cab, short box. I had sold some things on craigslist when I came across a deal on a complete P1SC setup. The previous owner had it installed on a 2000 Tahoe. I asked for advice from this site, and ultimately purchased the kit from him.
That's when my real research began. I've logged many hours on this site reading about procharger setups, roots style setups, and turbo setups. (I'm starting to think I should go turbo in the first place.) What I was looking for in the beginning was what supporting mods would be a good idea given the extra stress the supercharger would be adding.
I found out that I should at least run a shift kit, a transmission cooler, boost gauge, wideband gauge, and a tune.
The guy that had the kit prior to me actually used different injectors and not the Fuel Management Unit. (I've read the FMU is a pretty terrible setup.)
What this has turned into (thanks to this site) is a 4L80E swap, 3000 stall Yank converter, NP149 transfer case, and the appropriate adapters. Also, lowering spindles and lowering shackles. (All bought second hand, by the way.)
Still on the list are front and rear sway bars and maybe a LS2 cam/Z06 springs.
I'm in parts collecting mode and I'm getting side tracked.
So when I'm done collecting parts and I get everything installed, I figure I should be able to push somewhere around 525 horsepower. What I'd like to do is possibly swap in a 6.0 some day. If I do that I would build the LQ4 with a forged bottom end. I was thinking at that time I would rebuild the P1 into a D1. Or sell the P1 and buy a D1.
What I'm wondering is, how much power can the P1SC provide? Is 525 nearing it's limit? How much power can the D1 provide? What's it's limit?
This truck needs to be tame enough for my wife to be able to drive it. It is a truck and it does have truck duties to perform. Sorry for the long post, but that's kinda how my posts are. LOL.
09-17-2011, 02:54 PM
#3
I was thinking flywheel horsepower since drive trains can vary so greatly.
The dyno sheet that came with my P1 setup showed he put down 440 horsepower to the wheels. All he had was different injectors and a tune. He never bothered with a wideband or trans cooler.
The dyno sheet that came with my P1 setup showed he put down 440 horsepower to the wheels. All he had was different injectors and a tune. He never bothered with a wideband or trans cooler.
09-17-2011, 04:56 PM
#4
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They say the limit of a P1 is 825 flywheel hp, what ever that corrects to in whp is anybody's guess with all the variables. 525 should be doable though and probably over 625 with a D1.
09-17-2011, 06:18 PM
#5
Okie dokie. Thanks! I should be good for a while then.
While we're on the subject, how well do you guys think the 10 bolt will hold up? The only thing I'm changing is I'm adding a Trutrac. I figure with the AWD and the automatic transmission, the stress on my stock front and rear differentials should be minimized.
Thoughts? Think they'll take the abuse? I hope so!
While we're on the subject, how well do you guys think the 10 bolt will hold up? The only thing I'm changing is I'm adding a Trutrac. I figure with the AWD and the automatic transmission, the stress on my stock front and rear differentials should be minimized.
Thoughts? Think they'll take the abuse? I hope so!
09-17-2011, 08:45 PM
#7
520 horsepower would be fantastic! But realistically what can I do with a stock 5.3?
Ya know, if I put down 400ish to the wheels I'll be thrilled.
EDIT:
Looking through all the paperwork I got with the procharger setup I found his actual dyno sheet. He put down 343 HP to the wheels. D'oh! 525 is probably an unrealistic goal at this point. LOL.
Ya know, if I put down 400ish to the wheels I'll be thrilled.
EDIT:
Looking through all the paperwork I got with the procharger setup I found his actual dyno sheet. He put down 343 HP to the wheels. D'oh! 525 is probably an unrealistic goal at this point. LOL.
Last edited by iregret; 09-17-2011 at 08:54 PM.
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09-19-2011, 12:02 AM
#8
There's a lot that goes into that dyno number. For starters every dyno is different but we wont get into that can of worms...
It sounds like this guy had the bare bones with this blower on his truck. Start thinking about a good set of headers/exhaust, a smaller pulley, and (if it were me) a cam, and youre talkin about at LEAST 100rwhp more than that last guy. Ive seen SSS's go 12.0 at 110 and better with the P1... no way you're doin that with 340 hp on a dyno. Those guys had all the supporting mods I listed though and I'd put them close to 500 at the wheels.
It sounds like this guy had the bare bones with this blower on his truck. Start thinking about a good set of headers/exhaust, a smaller pulley, and (if it were me) a cam, and youre talkin about at LEAST 100rwhp more than that last guy. Ive seen SSS's go 12.0 at 110 and better with the P1... no way you're doin that with 340 hp on a dyno. Those guys had all the supporting mods I listed though and I'd put them close to 500 at the wheels.
