Procharger P1 on a stroker #'s????
12-22-2005, 12:31 AM
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Procharger P1 on a stroker #'s???? Having to go through my bottom end on my 8,000 mile GTO LS1 
searching for options...pretty much figured all that out. What I would like to know is, with the P1 being pretty limited, has anyone got a stroker 383,402,408 with high flow heads, full exhaust and a P1??? curious as to what boost you are able to maintain???
searching for options...pretty much figured all that out. What I would like to know is, with the P1 being pretty limited, has anyone got a stroker 383,402,408 with high flow heads, full exhaust and a P1??? curious as to what boost you are able to maintain???
12-22-2005, 01:28 AM
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Here is my situation. So far 10# is all I can get out of it right now.
https://ls1tech.com/forums/forced-induction/395505-sdce-belt-slip.html
https://ls1tech.com/forums/forced-induction/395505-sdce-belt-slip.html
12-22-2005, 04:39 AM
#3
Originally Posted by b727pic
Having to go through my bottom end on my 8,000 mile GTO LS1
searching for options...pretty much figured all that out. What I would like to know is, with the P1 being pretty limited, has anyone got a stroker 383,402,408 with high flow heads, full exhaust and a P1??? curious as to what boost you are able to maintain???
searching for options...pretty much figured all that out. What I would like to know is, with the P1 being pretty limited, has anyone got a stroker 383,402,408 with high flow heads, full exhaust and a P1??? curious as to what boost you are able to maintain???
12-22-2005, 07:53 AM
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4 pounds with a 4 inch blower pulley. I will soon be switching to a 3.4 inch pulley and if you want I'll report back what boost level is achieved. Set-up is a 402 w/ AFR 225's. FYI, at 4 pounds I'm at 557 SAE RWHP on pump gas.
12-22-2005, 10:26 AM
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Originally Posted by Exotic Performance Plus
Ron, what did you find out with the engine? Bob
The more I thought about the possibility of a broken ring land galling up my cylinder wall
the less prudent I thought it was to drive it any more. I pulled the head yesterday...I am somewhat dissapointed because there is nothing obvious 
there is a very faint vertical line on the cyl wall but I can't feel it and it wont catch a finger nail.... the head looks good. As for the Head Gasket....who knows, I did not see any signs of blow by.So I am very confused....but at this point she is not going back together without forged internals....the only question is how wild do I get. hence this post, with the limits of the P1 I don't want to spend and extra $2500.00 on a good set of heads, only to wind up with 8-9 PSI out of the blower....I may be wrong but I am thinking I gain more HP keeping my stock heads (or something similar) and running 12-13 PSI....what is your opinion??
12-22-2005, 10:31 AM
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Originally Posted by Cyborg
4 pounds with a 4 inch blower pulley. I will soon be switching to a 3.4 inch pulley and if you want I'll report back what boost level is achieved. Set-up is a 402 w/ AFR 225's. FYI, at 4 pounds I'm at 557 SAE RWHP on pump gas.
just with the JBA install I lost 1 psi, I imagine any head flowing anywhere near the 300CFM mark as compared with stock is going to have devastating effects on my boost
12-22-2005, 10:32 AM
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Originally Posted by Ed Blown Vert
Here is my situation. So far 10# is all I can get out of it right now.
https://ls1tech.com/forums/showthread.php?t=395505
https://ls1tech.com/forums/showthread.php?t=395505
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12-22-2005, 10:50 AM
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Originally Posted by b727pic
Cyborg: I am very interested in what you find out...on a 347 CI with an EDC cam, JBA shorties, and a 3.6 pulley I am right at 10 PSI @6500. I am assuming with a 3.4 that should put me at around 12 PSI.
just with the JBA install I lost 1 psi, I imagine any head flowing anywhere near the 300CFM mark as compared with stock is going to have devastating effects on my boost
just with the JBA install I lost 1 psi, I imagine any head flowing anywhere near the 300CFM mark as compared with stock is going to have devastating effects on my boost
12-22-2005, 11:49 AM
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Originally Posted by Cyborg
Remember a higher flowing head or higher flowing setup in general may eat away some boost but increase your power and torque...it's not necessarily a bad thing that you're running lower boost if your power & torque are going up!
If motor A is generating 400HP @zero boost, then crank in 12 PSI motor should be around 700 HP
If motor B is generaing 450HP @ zero boost, then add in 7 PSI motor estimated power is around 650
Looks to me as if Motor A is the better scenario for power, motor B will probably last longer....but you are leaving some HP on the table.
The problem is the ATI P1 is limited when our engines start pumping more air through them. Even the D1sc is not gonna support 18 PSI on a big cube good flowing motor.
While I enjoy all the trick stuff just as much as the next guy...ie cool heads, big cubes etc..... it looks like my best power choice is Motor A which strangely enough is the least expensive option
12-22-2005, 01:04 PM
#10
Hmm, it makes sense. Since you are stuck with the P-1SC, (for now...) you might as well keep the stock cubes and just add better rods and pistons. You could keep your stock heads and reduce the compression ratio down to a more boost friendly 9.5/1 compression ratio, which would help with the 91 octane fuel in your area. Bob
12-23-2005, 11:30 PM
#11
Hell... I am going to be looking for 13-15psi on the 408/heads/cam combo I am working on putting together! I already know of a local Trans Am putting down over 750RWHP on a D1 with a very similar setup to what I am planning!
Swap the P1 unit for the D1!!!
Swap the P1 unit for the D1!!!
12-24-2005, 12:05 AM
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Originally Posted by TrakDay
Hell... I am going to be looking for 13-15psi on the 408/heads/cam combo I am working on putting together! I already know of a local Trans Am putting down over 750RWHP on a D1 with a very similar setup to what I am planning!
Swap the P1 unit for the D1!!!
Swap the P1 unit for the D1!!!
The D1 is only flowing 200cfm more than the P1, I think "IF" you get your PSI goals on the 408 with good flowing heads you will be pretty much where I am now......maxing the blower RPM and out of options....
I toyed with the D1 internals swap, but with a plan of better flowing heads I will need even more than the D1.......I am currently working on that plan as we speak
12-24-2005, 04:59 AM
#13
Originally Posted by b727pic
Hey trak
The D1 is only flowing 200cfm more than the P1, I think "IF" you get your PSI goals on the 408 with good flowing heads you will be pretty much where I am now......maxing the blower RPM and out of options....
I toyed with the D1 internals swap, but with a plan of better flowing heads I will need even more than the D1.......I am currently working on that plan as we speak
The D1 is only flowing 200cfm more than the P1, I think "IF" you get your PSI goals on the 408 with good flowing heads you will be pretty much where I am now......maxing the blower RPM and out of options....
I toyed with the D1 internals swap, but with a plan of better flowing heads I will need even more than the D1.......I am currently working on that plan as we speak
12-24-2005, 10:35 AM
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Originally Posted by Exotic Performance Plus
Man, you get up early Ron! lol Bob
Naw just up late....We are having a very BRADY Christmas around my house. Somehow after 25 years it was our "turn" to host the annual family gathering....Looks more like a Boy / Girl scout camp out than anything else!! Lol.
Merry Christmas and wishing everyone more HP in the New Year!!
12-24-2005, 02:52 PM
#15
Yeah... have you toyed with the option of an F1R yet!? From my understanding the P1 is good for 600-650rwhp...the D1 is good for 725-800rwhp...
With my planned setup I am hoping to be in the low-mid 700s!
With my planned setup I am hoping to be in the low-mid 700s!
12-24-2005, 05:37 PM
#17
Originally Posted by b727pic
Youre getting warmer
12-24-2005, 06:17 PM
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Originally Posted by TrakDay
Well... you need to let me know! and get some dimensions! It is going to be hell getting anything bigger than the D1 in our engine bay!
You did see my crash bar mod right?????
