When you start looking to spend a lot of money on your engine and you want to be able to go to bed each night knowing that your car is in good hands I can honestly tell you (from experience) that JD's Performance in PA has the BEST service on the planet.

You have to know the rest of the story...
I bought Joe Prince's old engine and when I got back to SC the oil pressure was extremely low (10psi at idle). I called Joe Dutkiewicz (JD) who took over JPR's business and now employees Joe Prince (JPR) to do all of his head work at his speed shop. JD told me that he would make my car right if I would bring it back to him. 600 miles is a long way to take your car but what the heck... right? At any rate, I now have my car back.

JD made everything NEW. He took the entire motor and rebuilt it just like new. Here's what he did...

Short block redone completely
New Diamond forged pistons with valve reliefs
Crank was redone & balanced
The block was honed w/a plate and piston rings fitted
All new engine bearings including cam bearings
Block was lined bored
Deck was checked
Cylinder heads reworked completely (new design by JD)
(Upgraded my springs to dual good to .650 w/titanium retainers)
Z06 oil pump was ok and shims removed
New gaskets
Re-dynoed and tuned

JD only charged me for the spring upgrade. That's it!!!

Guys at 49 I have seen it all (I thought). I have NEVER met a man that wants to do the right thing anymore than JD. I know some of you think that his Internet manners aren't so good - caps and all, BUT--- JD is to be held HIGH when it comes to INTEGRITY. Not many measure up. Everyone talks a good game until it gets time to put their MONEY where their mouth is. Know what I mean?

Think with me now.... Isn't that what we all want? You may be looking to save money or get a great deal, I don't know. What I do know is that without JD my life would have been a world of sh*t.

JD also knows how to deliver when it comes to power. JPR's engine would only dyno at 440/401 with no cat-backs. The NEW engine that JD built dynoed at 460/420 (all belts, filter, cat-back, hydraulic cam). This motor is WILD! It pulls like a freight train. Even at low rpm 2-3k, if you step on the pedal (don't dump the clutch, just mash the gas) in 1st or 2nd the 345's spin like crazy with the traction control on. Remember this is a Vette and stock I could barely get the tires to spin dumping the clutch (1st gear) with NO traction control. Then when you shift into third gear the car will still spin the tires at the shift point (traction ON). 4th gear feels like 2nd when stock and 5th gear has enough power to pass everything on the road with ease.

I am telling you guys that this car is one of the best running stock displacement LS6's around. You know it's good when you take your wife for a ride and when you ask her what she thinks she says, "it's scary!" This told me that I now have what I wanted and JD made it possible for me.

Oh yeah, the oil pressure is now 80% better. At idle I now have 18psi. Considering he set the tolerances lose this seems to be reasonable and I know that JD knows what he is doing.

I hope that any of you guys that are looking to have ANYTHING done on your car will call JD.

As a tribute to JD I will now lock the caps>>>
THANKS JD, YOU ARE THE BEST MAN!!!!
YOU KNOW HOW TO MAKE THESE CARS ROCK
The Dyno run is attached.

 

Congrats!!!!!! 18psi is still too low for a street motor though. Just my opinion. Im sure JD is a good guy, and he has caught a bad rap on the boards, some of its justified and some of its not in my eyes. If I were JD though I cant see myself employing Joe Prince after the antics he has pulled. JD is putting his own company in jeapordy(SP) by having Joe P as an associate. Again, thats just my .02

Now, back to your regularly scheduled JDs Auto comercial...

 

Werd. JPR is a shady MF'er but JD was a man and stepped up to the plate to make things right. Props to JD!!!

 

18 psi only still? i wonder if your gauge is messed up or inaccurate. can you put a mechanical gauge on there to double check.
JD's went above and beyond;that is for sure. congrats!!!

 

Before you guys start making assumptions about the work relationship between the two Joes, why don't you talk to both of them or stop by the shop. Did things get off to a rocky start, yes, but its always rocky when you begin a new venture but both of these guys got things straightened out. None of you know the exact details of what went down and how things panned out so quit the bashing.

Joe Prince is a good guy, who, working with Joe D. got everything taken care of.

Step away from the computer for a second and live life in reality for a second and then make judgements.

Where are you guys from anyway? Have any of you met either of the two Joes? I have talked to both guys in person on countless occasions and coincidentally I actually introduced Joe Prince to Joe D so don't start screaming that Joe P is nothing but bad news to Joe D.

I'm done ranting now.

Congrats George on your car. I had heard about it last week and figured you'd be happy. Joe P and Joe D stepped up and took care of the situation.

 

Kick ***!!

Awsome Job JD!!!

It great to see someone step up and take care of business.

Jeremy

 

I have never done business with JD, but recently he has contacted me to see if I will need his help to get the motor I have on order in the car when I need it. He went out of his way to mail me a couple of times, I didn't even go to him first. He seems seriously cool. Hopefully I won't need his help, but at least I know he is there if needed.

 

Congrats!

I would verify that oil pressure though

 

Per Mopar engineers back in the good old days, you only need 10 psi per 1,000 rpm...

My HemiCuda sat at the tree with 10-15 psi @ 1,000 rpm , & went thru the traps with 60 psi @ 6,000 rpm...

I pulled the pan alot for bearing checks , & never had a problem , bearings always checked out a-ok...

Low pressure = blown engine
High pressure = HP loss
Just the right amount of pressure = good power

Dave

 

Cool George...I am optimistic that my motor will come out well now. You actually got me excited about my car for the first time in a long time when you gave me a call the other day.

 

Alchemist, my comments werent meant to bash anyone. I simply stated my opinion. Fact of the matter is, JD had the car on the dyno for several hours and still delievered the car knowing it had mechanical problems, IE oil pressure. Now the customer had to take his car back to JDs for repair. Thats another 1200 miles he didnt need to drive all in all. Like I said, I didnt mean to bash. Im sure JD did everything he could, but I wouldnt let a car leave my shop in the first place if it wasnt absolutely perfect. Again, thats just MY opinion. THere were obviously problems with the motor, as shown by all the parts replaced by JD in the first place..

George C, do you have any correction factors on that dyno graph. You made 440rwhp before, but was that SAE or STD? STD #s dont mean much. I strapped down a car yesterday pulling 457rwhp uncorrected and 434 corrected. I would redyno the car using SAE values and see what it puts down. My guess is mid 430s/400. Goodluck and I am glad you are happy with the results.

Two thumbs up for JDs auto Repair!!!

 

He doesnt need to redyno the car, the dyno can be mapped to one or the other, and he has both. George's corrected numbers were 448/412 if Im not mistaken. That is through full exhaust, all belts on, and 345 rear tires. His previous number SAE was 440/401 with no exhaust . I believe there is a lot more area under the curve too. Maybe George can post the graphs.

 

It seems JD has done a good job of setting things right. Lets try to keep this positive please

 

congrats george and kudos for JD for stepping up and making things right

 

who cares about your cuda!

check that oil pressure

 

Sounds great George, glad you have been taken care of. I applaud JD's Auto for stepping up and proving what they can do. These guys have an excellent reputation in the world of Mustang racing, and are sure to step up the LS1 racing world also.

Tony

 

Just under 20lbs I'd think would be fine.. thats what mine idles at.. Goes up to about 50-60 under w.o.t. My lt1 idles at 15 and goes to about 40.. Did that at 107k miles when I bought it.. it now has 150k-155k miles

Peace,

 

That's great to hear!! I'm having a leakdown test performed this month on a JPR warrantied 348 Forged LS1 motor; coolant issues and low HP at JD's dyno from October of 2003. Good for you George!! Congrats to JD, he is a stand up guy as is Joe Prince.

 

You might want to watch that tune as well, my motor did have a stock block with 20k miles on it but it only lasted another 2 months / 2000 miles after the head/cam install with what is probably the same tune you got. Others have suggested to me to lower the a/f to 12.5 to 1 for daily street driving. I just don't want to have the same thing happen to you that happened to me which was a sh*tload of detonation and another dead motor a couple months down the road. Also verify that oil pressure as it does still seem low.

 

George,

What cam did you go with?

Do you think the heads are the HVLD design now?