who has actually maxed out a p1sc procharger
10-24-2006, 06:28 AM
#21
Originally Posted by Ed Blown Vert
Hmm...my CR is 9:1 which I think is what most run here.
But if that is the case, I just need more blower.
But if that is the case, I just need more blower.
Most people run 9-1 and wonder why they aren't making all the power. 9-1 is a huge safety margin but there is huge gains with higher compression and still safe for pump gas. 
10-24-2006, 08:36 AM
#22
I had one do 463rwhp through a auto with a stall. This was with everything on too, no dyno tricks, still had cats, full exhaust, ac belt, 12 bolt, and 18" wheels, stock air bonnet on the blower, mild cam and ls6 heads. 4-5psi with a little fluc. aka slip. No the car has a 8rib and makes 6-7psi. The blower is not near being maxed. I think the whole setup has to be optimized to make good power thats all. This car for example had a little more compression then stock. Still running on pump fuel and it loves 15degrees at torque peak and 18-19 up top.
10-24-2006, 10:03 AM
#23
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Originally Posted by Slowhawk
your touching on something there Most people run 9-1 and wonder why they aren't making all the power. 9-1 is a huge safety margin but there is huge gains with higher compression and still safe for pump gas.
Most people run 9-1 and wonder why they aren't making all the power. 9-1 is a huge safety margin but there is huge gains with higher compression and still safe for pump gas. So tempted to pull the 6.0L heads off and install some 5.7L heads to raise my CR.
10-24-2006, 11:03 AM
#24
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Originally Posted by Ed Blown Vert
That does make some sense. My orginal engine was 11:1 and with only 5#, I was making over 500 rwhp.
So tempted to pull the 6.0L heads off and install some 5.7L heads to raise my CR.
So tempted to pull the 6.0L heads off and install some 5.7L heads to raise my CR.
I was unknowingly running 5psi on top of 11.8:1 on my 5.3L heads before I swapped ! No KR on 91 octane pump gas, either, and it pulled like crazy ! (Probably the fastest my car has ever felt - hopefully when I get finished getting this new setup together and tuned it will be faster - at least it better be LOL).
Rob (Bad30th)
10-24-2006, 11:20 AM
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Originally Posted by Bad30th
My setup is now at 9.37:1 with the -4cc pistons and WCCH S2 71cc LS1 heads.
I was unknowingly running 5psi on top of 11.8:1 on my 5.3L heads before I swapped ! No KR on 91 octane pump gas, either, and it pulled like crazy ! (Probably the fastest my car has ever felt - hopefully when I get finished getting this new setup together and tuned it will be faster - at least it better be LOL).
Rob (Bad30th)
I was unknowingly running 5psi on top of 11.8:1 on my 5.3L heads before I swapped ! No KR on 91 octane pump gas, either, and it pulled like crazy ! (Probably the fastest my car has ever felt - hopefully when I get finished getting this new setup together and tuned it will be faster - at least it better be LOL).
Rob (Bad30th)
10-24-2006, 02:00 PM
#27
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My P maxed out at 8-9 psi & 525rwhp. But that was feeding a 402 with ported 6L heads, and LSX intake and a cam with 115 lsa thru a stall & a Ford 9". (note with my 25% driveline loss that is ~ 700 at the engine) The impeller speed was close to 65k.
So far I'm made ~620 with my D @ 13 psi & ~ 59k on my dinged impeller.
So far I'm made ~620 with my D @ 13 psi & ~ 59k on my dinged impeller.
10-24-2006, 02:27 PM
#28
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I don't understand how some of you guys are saying your P1SC is maxxed out and hardly making more power than me.
I'm using a stock blower pulley, tiny 212/218 cam, LPE Stage 1 LS1 heads (nothing more than a cleanup job), small 2.5"" exhaust all on the stock bottom end and putting down 514/466 through an UNLOCKED 4L60E on 93 octane.
I'd think that on a stroker motor with the blower pullied down, it should have no problem whatsoever approaching the 650-700 rwhp mark with a 6-speed.
Mike
I'm using a stock blower pulley, tiny 212/218 cam, LPE Stage 1 LS1 heads (nothing more than a cleanup job), small 2.5"" exhaust all on the stock bottom end and putting down 514/466 through an UNLOCKED 4L60E on 93 octane.
I'd think that on a stroker motor with the blower pullied down, it should have no problem whatsoever approaching the 650-700 rwhp mark with a 6-speed.
Mike
BOSS APPROVED!
10-24-2006, 08:18 PM
#31
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What is your CR?
Originally Posted by Kraest
I don't understand how some of you guys are saying your P1SC is maxxed out and hardly making more power than me.
I'm using a stock blower pulley, tiny 212/218 cam, LPE Stage 1 LS1 heads (nothing more than a cleanup job), small 2.5"" exhaust all on the stock bottom end and putting down 514/466 through an UNLOCKED 4L60E on 93 octane.
I'd think that on a stroker motor with the blower pullied down, it should have no problem whatsoever approaching the 650-700 rwhp mark with a 6-speed.
Mike
I'm using a stock blower pulley, tiny 212/218 cam, LPE Stage 1 LS1 heads (nothing more than a cleanup job), small 2.5"" exhaust all on the stock bottom end and putting down 514/466 through an UNLOCKED 4L60E on 93 octane.
I'd think that on a stroker motor with the blower pullied down, it should have no problem whatsoever approaching the 650-700 rwhp mark with a 6-speed.
Mike
10-24-2006, 08:58 PM
#32
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Well I maxed out my injectors today! We will add some 60's in a few days and try again. My little P-1SC was making 11 psi at 6000 rpms! 
Last edited by Packy; 10-25-2006 at 09:34 AM.
10-24-2006, 10:26 PM
#33
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Originally Posted by Kraest
I don't understand how some of you guys are saying your P1SC is maxxed out and hardly making more power than me.
I'm using a stock blower pulley, tiny 212/218 cam, LPE Stage 1 LS1 heads (nothing more than a cleanup job), small 2.5"" exhaust all on the stock bottom end and putting down 514/466 through an UNLOCKED 4L60E on 93 octane.
I'd think that on a stroker motor with the blower pullied down, it should have no problem whatsoever approaching the 650-700 rwhp mark with a 6-speed.
Mike
I'm using a stock blower pulley, tiny 212/218 cam, LPE Stage 1 LS1 heads (nothing more than a cleanup job), small 2.5"" exhaust all on the stock bottom end and putting down 514/466 through an UNLOCKED 4L60E on 93 octane.
I'd think that on a stroker motor with the blower pullied down, it should have no problem whatsoever approaching the 650-700 rwhp mark with a 6-speed.
Mike
Now ATI refuses to release their compressor maps, so no one can be sure if this is the case, however it seems plausible based on the results.
10-25-2006, 11:20 AM
#36
Only FACT is a P1SC will flow only so much air, whether its attached to a 707 cubic in BBC or a 2.3L ford. Pretty much what ATI says its max engine HP will be - it will be under ideal conditions.
Using dynojet numbers on 50 dfferent cars and setups to determine the max output of a compressor is somewhat futile
Using dynojet numbers on 50 dfferent cars and setups to determine the max output of a compressor is somewhat futile
10-25-2006, 09:42 PM
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Originally Posted by Draco
Superchargers have compressor maps as do turbos.... a stroker engine may run the P1 away from its peak efficiency island towards choke and will probably have less peak power potential then a stock cube motor.
Now ATI refuses to release their compressor maps, so no one can be sure if this is the case, however it seems plausible based on the results.
Now ATI refuses to release their compressor maps, so no one can be sure if this is the case, however it seems plausible based on the results.
Mike
10-26-2006, 11:15 AM
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Here's my P1 on my C5 Z06-this is with 317 heads(69.5CC) for a CR of 9.85. Cam is defintely not a blower cam 222/228 on a 113. This is with a 4.10 pulley for 51000 rpm-nowhere near maxed yet-made 606 rwhp on a dynojet:
then swapped to a D1SC and look what happened!
then swapped to a D1SC and look what happened!
10-27-2006, 02:38 PM
#40
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500HP with ~10.4:1, PP heads, cats, M6 12bolt, 91 octane, 220/114 cam. Plenty of HP still on the table but I ran out of money. 600 would be easy at this point, I just dont want the overhead that comes with it.
At this point its a matter of getting it to the street.
A more significant question is who has the highest P1 torque output. What setup? What RPM?
Seems like everyone focuses on HP and never considers TQ.
At this point its a matter of getting it to the street.
A more significant question is who has the highest P1 torque output. What setup? What RPM?
Seems like everyone focuses on HP and never considers TQ.