Pedders G8 Gets ProCharged

[JusticePete]

Originally Posted by JTSnooks

Back to an on-topic question. There's plenty of information (and opinions) on the internet if you're really interested, but basically a procharger (centrifugal) is best described as a belt-driven turbo. In other words, it builds less boost at low-rpm than a roots-type, but potentially allows for more top-end power. Less low-end "no traction in any gear" torque, but less parasitic drag at high-rpm producing better peak power numbers with no fall-off at high-rpm. So it all depends on preference and price, really.


Pete, are you guys replacing the cam/lifters/springs to remove the DOD feature? If so, will it be a similar grind to stock, or are you going full blower cam? What kind of power are you expecting to hit, or what number are you shooting for? I know Prochargers have made crazy horsepower on modded LS2s (and LS1s), not sure how hard you're planning on pushing the engine.

The install that will be done on my car is designed around a box stock engine. They will change the injectors and the plumbing up to the MAF and tune it. The tune will be fat to protect the motor at the expense of power. My net at the wheels on the 5.7 LS1 in the GTO was 463 to 493 depending on the dyno. We are hoping to get 500 RWHP on the L76 because of the plumbing. The Intake and the Exhaust seem to be very restrictive. I'll be running a Corsa exhaust and a custom tune.

As far as the suspension on the GXP my opinion of the HSV advanced adaptive suspension is it should stay in AU. One of my mates is working with HSV to have their car delivered with a standard suspension so it can be upfit with Pedders. He is an employee of Pedders and shared my prejudice. The adaptive system they use is no where near as sophisticated as the AMG CL65. That is a stellar system.

I have had excellant results with my DBA / AP Racing setup on the GTO and plan to use a similar system on my G8.

The shift points in the transmission are so biased towards fuel economy I am amazed at the performance we get out of the G8. There seems to be substantially more torque in the L76 than in the LS1/2. The G8 pulls extremely well box stock at higher speeds. My guess is that my ProCharged G8 will be faster than my ProCharged GTO. I'll know a lot more by May 20th.

ProCharger already has a blog running on MY G8.
http://www.procharger.com/blog/?p=9#comment-3

[JusticePete]

Originally Posted by Belo

No, I'm still a lonely gtp driver.

Bring it to the Autocross. Since I am the sponsor, my guess is they will let you run. You have the GTP exception as a Guest of Pedders USA -- you can Autocross for FREE.

[Russo]

i always liked ProCharger, however those that i know who have them often have trouble with the belts jumping.... i'll still consider it, if anyone with a g8 doesn't have problems...

[JusticePete]

Originally Posted by Russo

i always liked ProCharger, however those that i know who have them often have trouble with the belts jumping.... i'll still consider it, if anyone with a g8 doesn't have problems...

I have been told that more than once so when I got my first ProCharged GTO (I think we did three -- can you believe I lost count?) I had them delivered with spare belts. I never needed a spare belt. I never had one jump. The first GTO we did did have a belt fall off, but that was only after the guy who bought it tried to take a tree down with it. It could be that I don't drive my car hard and if you believe that one I have several bridges to sell you.

[JusticePete]

These guys are the best. This is the last time my G8 engine compartment is going to look like this....



Not many people are fortunate enough to spend time with thier families while they work. Becuase I do travel so much, I occaisionally bring the family with me. We travelled quite a bit in the GTO -- which is hard to do since there are five of us and only four seats. The G8 makes it easy. We intend to caravan to the GTOAAs with the GTO and the G8. I hope to see many of you from the G8 board at the GTOAA AUtocross. Rumour has it that next year the Pontiac and GTO clubs will hold a joint convention and Pedders will sponsor that autocross as well.

The FI guys tend to use FI to go fast. Imagine that. In the GTO community we have lost to many people to accidents. One of the best ways to learn your new G8 is to run an autocross. Please join us in Saratoga.

http://www.ls1gto.com/forums/showthr...=1#post4100690

[JusticePete]

304.59 Max HP
325 ft-lbs max torque
4th gear
Box Stock
1,300 Miles

[XxXSlaynXxX]

Not to complain but I was following your links on your pedders site for the G8 and looking at the Track eXtreme and the section seems to be incomplete. I dont think it has all the parts listed and the description is the same as the track II. Can you update the page or tell us what the difference between the track II and Track eXtreme is?

Also I am not following the earlier conversation, what about the GXP's suspension are you talking about? I am not aware of the suspension on the GXP model coming in 2009, what info has been released? I am worried the extra money for GXP will be wasted if you were to change most of the parts to aftermarket anyway. Although I do want a manual so it doenst matter.

[JusticePete]

Originally Posted by XxXSlaynXxX

Not to complain but I was following your links on your pedders site for the G8 and looking at the Track eXtreme and the section seems to be incomplete. I don't think it has all the parts listed and the description is the same as the track II. Can you update the page or tell us what the difference between the track II and Track eXtreme is?

Also I am not following the earlier conversation, what about the GXP's suspension are you talking about? I am not aware of the suspension on the GXP model coming in 2009, what info has been released? I am worried the extra money for GXP will be wasted if you were to change most of the parts to aftermarket anyway. Although I do want a manual so it doesn't matter.

I think this is right... but I am getting older. The list is shorter because you have only one part number listed for the coil / damper at each wheel.

Track eXtreme The Track II combines all the components of the Street II and adds sway bars, bushes and endlinks. With the virtual pivot point design and the advanced rear suspension you tracked G8 does not need to e over sprung and over damped. In complete OE trim it will out perform many respected marques. With a Track II System we are going hunting for the big boys with big dollar stickers. We add more urethane bushes to create greater control. These are Pedders exclusively designed urethane bushes that use voids, shapes and volume of urethane to increase control while maintaining an OE like ride. There are no squeaks. It is not rough. It is AMG like control. It has long been the Pedders philosophy that sway bars are not used to correct deficiencies in your suspension. Sway Bars are the final tuning step for a properly sprung, damped and bushed vehicle. Pedders sways offer four positions of adjustment front and three positions of adjustment rear. They include Pedders HD endlinks and urethane D bushes. They are perfectly matched to provide an amazing level of control as they compliment every elements of your Pedderised G8.

5030 Strut Bearing, Two Required. Yellow to Spring. White to Strut Mount $ 38.57
5030 Strut Bearing, Two Required. Yellow to Spring. White to Strut Mount $ 38.57
5421 GM Zeta Extreme Control Arm - Caster Lock Washer $ 77.95
5851 Strut Mount, Requires 2 packages $ 42.99 5851Strut Mount, Requires 2 packages $ 42.99
429006ADJ Kit GM Zeta sway bar Heavy duty adjustable kit $ 649.87
E9295 GM Zeta Rear eXtreme Coilover $ 581.64
E9295 GM Zeta Rear eXtreme Coilover $ 581.64
E9464L GM Zeta Front eXtreme Coilover Left $ 582.22
E9464R GM Zeta Front eXtreme Coilover Right $ 582.22
EP1167 GM Zeta Differential Bush Kit $ 108.36
EP1169 GM Zeta Extreme Sub-Frame Connector Kit $ 238.99 EP2112 GM Zeta Steering - Rack & Pinion Mount $ 26.25
EP6560 Radius Rod Bush $ 161.59
EP6561 GM Zeta Front Control Arm Bush - Inner Bush $ 134.98
EP7263 GM Zeta Control arm - Upper inner rear $ 96.20
EP7265 GM Zeta Trailing arm - Front $ 96.20
EP7266 GM Zeta Control Arm Rear Lower Outer $ 96.20
TBA GM Zeta Extreme Strut - Brace TBA Track eXtreme $ 4,273.62

For those that are going the mod route the biggest advantage of the GXP will be their preference for a stick shift. On my 04 GTO we replaced, suspension, brakes, exhaust, seats, wheels and added a ProCharger. If I purchased a G8 GXP I would still replace the suspension, wheels, tires exhaust and add a blower.

Everyone is different. In the LX community my feeling is that the SRT 8 buyers / owners are really more interested in the larger displacement engine and increased RWHP. For my money the real advantage of the SRT 8 is the Brembo brake upgrade. The GXP will have Brembo brakes so that my be the best most improved part of the GXP. I can live with an automatic in my four door luxury sedan G8. I just hope my automatic transmission can live with me. As I said I am slowing down in my old age.

[BlownChevy]

Originally Posted by JusticePete

The install that will be done on my car is designed around a box stock engine. They will change the injectors and the plumbing up to the MAF and tune it. The tune will be fat to protect the motor at the expense of power. My net at the wheels on the 5.7 LS1 in the GTO was 463 to 493 depending on the dyno. We are hoping to get 500 RWHP on the L76 because of the plumbing.

You plan on adding 195.41 RWHP with how much boost? I do not see you getting there on pump gas on a stock motor. With the average gain @ 20 HP per pound of boost (in a perfect world) you would need to run 9.77 pounds of boost (call it 10). On pump gas @ the factory compression ratio? Not saying its impossible, but the planets would sure need to line up to make 10 psi happy on the street (on pump gas) and still maintain the dependability of the vehicle driveline.

[XxXSlaynXxX]

Originally Posted by JusticePete

I think this is right... but I am getting older. The list is shorter because you have only one part number listed for the coil / damper at each wheel.

Track eXtreme The Track II combines all the components of the Street II and adds sway bars, bushes and endlinks. With the virtual pivot point design and the advanced rear suspension you tracked G8 does not need to e over sprung and over damped. In complete OE trim it will out perform many respected marques. With a Track II System we are going hunting for the big boys with big dollar stickers. We add more urethane bushes to create greater control. These are Pedders exclusively designed urethane bushes that use voids, shapes and volume of urethane to increase control while maintaining an OE like ride. There are no squeaks. It is not rough. It is AMG like control. It has long been the Pedders philosophy that sway bars are not used to correct deficiencies in your suspension. Sway Bars are the final tuning step for a properly sprung, damped and bushed vehicle. Pedders sways offer four positions of adjustment front and three positions of adjustment rear. They include Pedders HD endlinks and urethane D bushes. They are perfectly matched to provide an amazing level of control as they compliment every elements of your Pedderised G8.

5030 Strut Bearing, Two Required. Yellow to Spring. White to Strut Mount $ 38.57
5030 Strut Bearing, Two Required. Yellow to Spring. White to Strut Mount $ 38.57
5421 GM Zeta Extreme Control Arm - Caster Lock Washer $ 77.95
5851 Strut Mount, Requires 2 packages $ 42.99 5851Strut Mount, Requires 2 packages $ 42.99
429006ADJ Kit GM Zeta sway bar Heavy duty adjustable kit $ 649.87
E9295 GM Zeta Rear eXtreme Coilover $ 581.64
E9295 GM Zeta Rear eXtreme Coilover $ 581.64
E9464L GM Zeta Front eXtreme Coilover Left $ 582.22
E9464R GM Zeta Front eXtreme Coilover Right $ 582.22
EP1167 GM Zeta Differential Bush Kit $ 108.36
EP1169 GM Zeta Extreme Sub-Frame Connector Kit $ 238.99 EP2112 GM Zeta Steering - Rack & Pinion Mount $ 26.25
EP6560 Radius Rod Bush $ 161.59
EP6561 GM Zeta Front Control Arm Bush - Inner Bush $ 134.98
EP7263 GM Zeta Control arm - Upper inner rear $ 96.20
EP7265 GM Zeta Trailing arm - Front $ 96.20
EP7266 GM Zeta Control Arm Rear Lower Outer $ 96.20
TBA GM Zeta Extreme Strut - Brace TBA Track eXtreme $ 4,273.62

For those that are going the mod route the biggest advantage of the GXP will be their preference for a stick shift. On my 04 GTO we replaced, suspension, brakes, exhaust, seats, wheels and added a ProCharger. If I purchased a G8 GXP I would still replace the suspension, wheels, tires exhaust and add a blower.

Everyone is different. In the LX community my feeling is that the SRT 8 buyers / owners are really more interested in the larger displacement engine and increased RWHP. For my money the real advantage of the SRT 8 is the Brembo brake upgrade. The GXP will have Brembo brakes so that my be the best most improved part of the GXP. I can live with an automatic in my four door luxury sedan G8. I just hope my automatic transmission can live with me. As I said I am slowing down in my old age.

Yeah thats what I mean, thats the exact same description of the track II and track eXtreme. One is $3121 and one is $4177. Whats the difference, they have the same description. $1000 price difference and no explanation. Yeah different parts but an explanation in what the eXtreme does would be helpful.

And yeah I test drove a G8 and told them I really wanted a manual. Also the big difference is the rear gearing, I think the GT is 2.92 and the GXP is 3.42 auto 3.73 manual, although I fear with 3.73 and forced induction I have no idea how launching will be possible haha.

[JusticePete]

Originally Posted by XxXSlaynXxX

Yeah thats what I mean, thats the exact same description of the track II and track eXtreme. One is $3121 and one is $4177. Whats the difference, they have the same description. $1000 price difference and no explanation. Yeah different parts but an explanation in what the eXtreme does would be helpful.

And yeah I test drove a G8 and told them I really wanted a manual. Also the big difference is the rear gearing, I think the GT is 2.92 and the GXP is 3.42 auto 3.73 manual, although I fear with 3.73 and forced induction I have no idea how launching will be possible haha.

I have issue launching my GTO with 315s...

Coilovers are the difference. The eXtreme system has four of them.





Mine are chrome and the production versions are powder coated.

[XxXSlaynXxX]

Oh god those chrome ones are purdy..... mmm anyway how big of a difference do they make?

[JusticePete]

Our GSR dampers and SR coils are roughly 30% higher in rate and on the critical damping scale than OE. Moving to the eXtremes we are now closer to 60% higher. The GSRs and SRs put the G8 into BMW M or AMG handling ranges. The G8 is an exceptionally well done car. The eXtreme, this is just my OPINION and that of a Mercedes AMG 12 cylinder four doors felt remarkably like the AMG over 100 MPH in terms of ride and handling. The real cost of the eXtremes is not measured in dollars -- they ride quality is more BMW M3 / Audi hard sport than luxury sedan. The coilovers on the G8 are not for everyone.

That said, I wouldn't want anything else.

[glugo1001]

OT, but Pete, do I understand from your first post that you live in Slidell or you just bought the car there? I live in Kenner and would love to see your car in person sometime!

[JusticePete]

I picked up the Pedders ProCharged G8 on Thursday....

ProCharger did nothing short of KILLER QUALITY WORK!!! I can't thank them enough. The installation is OE with Bling. The water-jet cut polished aluminum brackets and blower are nothing less than automotive jewelry. I felt like one of the guys on Overhaulin that keeps saying Holy S---!!! OMG -- WOW!!! Give me the keys -- NOW!!!!










The RWHP -- you'll have to wait. ProCharger has not released the numbers for the G8 kit. I can tell you they had my G8 running at my dream number. I can tell you they really liked the fat and flat torque curve. I can tell you that my car is not at my dream number today -- but we'll get it there. If you would like to read more here is the link.

http://forums.peddersusa.com/showthread.php?p=2155#post2155

[Red888]

Looks great. Congrats. Can't wait to see those RWHP's.

[Slizzo]

I'm thinking 600 is his number...

[twort]

I got to ride in his car at the Midcoast performance open house last weekend and it defentatly performed great. I felt the suspention was not overly ruff but very stiff and stable. He did some S and circles to show the difference and it was night and day over the stock version. I don't think the stock is bad but you could defentalty tell a difference and the power from the procharger was unreal but he still had the transmission lag that will have to be addressed.

[GoatHumper]

When is this kit going on sale????????

[Red888]

Originally Posted by yevot

If you're talking about a track car, I suppose you're right; the GXP may be the deal. However, if you're talking about normal driving and a little stop light racing here and there, the GT can be supercharged to 500hp and still cost less than (the assumed cost of) the GXP making it a much better deal if you're satisfied with the GT's mild-performing brakes, suspension, etc and can live without s a GXP's moderate-performing equipment (because, let's face it: the GXP isn't a race car either).

ditto