I want a little more juice out of my 6.2L and I was thinking about propane. How do you hook it up? Is it harmful to the engine? How much of a power gain could I expect?

Propane is only usefull on a T/D. If your 6.2 is a NA motor then it won't really do you any good.

It does make a big diff and I *hear* it has no bigg effect on the motor. however this is on cummins and P/S motors. The 6.2 has a seriously underbuilt bottom end that was helped a little when they did the 6.5. If you want GM diesel performance I recomend that you look into a 6.5 upgrade and a banks turbo kit as a good place to start.

HTH

Try going here (http://www.62-65-dieselpage.com/)

It's a paid member site, BUT they do still have some pretty info chevy diesels.

The diesel pages are a very good source of 6.2/6.5 info. The guys on there list are the tops...worth the $$

the propane will still work in a n.a. motor. all diesels run in a overly lean condition, meaning that there is always oxygen left after complete combustion. but i would not do it to a 6.2, but if you have to, get a exhaust gas temp. gage.

You should go talk to Pat Stewart at BD Power in Abbosford (http://www.dieselperformance.com/gmc/index.php) . One of their chips will give you 30-40HP and 60-90 Ft-Lbs. Tell him Jon Bruce sent you in to see him.

Kennedy Diesel (http://www.kennedytrailers.com/dieselproducts/index.html) do a ton of work on GM 6.2 and 6.5 diesels too. They're getting over 260 rear wheel horse power out of a 6.5 diesel.

What you need to do is swap a Cummins 12 valve into that thing. My budy put one in his 86 4 door chevy and with only $2000 total into it he dynoed at over 450hp. That 6.2 is a little week but you can make it perform. Those are all great sites to check out and honestly think about the swap. It isn't that hard and the benefits are great. Or you could just buy my 2000 PSD and have a complete truck :flipoff2: :flipoff2:

Originally posted by Bear
You should go talk to Pat Stewart at BD Power in Abbosford (http://www.dieselperformance.com/gmc/index.php) . One of their chips will give you 30-40HP and 60-90 Ft-Lbs. Tell him Jon Bruce sent you in to see him.


Is that the same Pat Stewart who drives a black YJ and uses bc4x4?

just a side note


I heard the new diesels in the new GM trucks are mady by Iszu or some werd foren country...dam I cant remember the name right now :confused: But I know that ther diesels KICK ASS

Originally posted by Chief Yelling Alot
just a side note


I heard the new diesels in the new GM trucks are mady by Iszu or some werd foren country...dam I cant remember the name right now :confused: But I know that ther diesels KICK ASS

you are correct sir....that would be the 6.6 duramax! WOW $$$$$$

Originally posted by Paul Gagnon


Is that the same Pat Stewart who drives a black YJ and uses bc4x4?

Yes the one and the same.
Paul you should hit him up for a spin on the BD Dyno....... then you can track the progress on beefing up the 6.2...
There was a listing from a guy selling a Bulldog propane injection system in Buy and Sell lat week.....
:D

Originally posted by Chief Yelling Alot
just a side note


I heard the new diesels in the new GM trucks are mady by Iszu or some werd foren country...dam I cant remember the name right now :confused: But I know that ther diesels KICK ASS

from talking with diesel mechanics about the new GM/ISUZU duracrap diesel, I've heard the same thing from every one-that GM pulled one of their classic manuvers, they looked at everything else on the market, saw the bad points of all that was currently offered, and combined them all into one motor. Most diesel mechanics dont expect the motors to last past 150,000 miles, and also point out that because of the design of the blocks the motors are a throwaway motor-they can't be rebuilt. I think I'll stick with international, Cummins, or caterpillar for my diesel needs. The other funny thing with the new GM's with the duracrap is that even the allison auto's aren't surviving, it seems that someone at GM felt that they shifted too hard for a pickup, and made powertrain soften the shifts up from the big truck applications, now they are burning up trannies in the pickups from the slippage heat caused by the soft shifts...

Originally posted by CrazyHorse

from talking with diesel mechanics about the new GM/ISUZU duracrap diesel, I've heard the same thing from every one-that GM pulled one of their classic manuvers, they looked at everything else on the market, saw the bad points of all that was currently offered, and combined them all into one motor.

That's about the biggest load of crap I've heard in a while. The Duramax hasn't experienced any of the problems that people have been predicting. Lots of rumour and speculation but no proof.

The other funny thing with the new GM's with the duracrap is that even the allison auto's aren't surviving, it seems that someone at GM felt that they shifted too hard for a pickup, and made powertrain soften the shifts up from the big truck applications, now they are burning up trannies in the pickups from the slippage heat caused by the soft shifts...

Really? Have you driven one? I'd take the Allison tranny over the Dodge or Ford automatics anytime. Have driven all the newest models and felt the shifts in each (with and without a load), I can honestly say the Allison shifted the hardest. It feels like a real truck tranny to me.

You should take one of these trucks for a spin and decide for yourself rather than relying on the latest rumours.

Originally posted by Bear
You should go talk to Pat Stewart at BD Power in Abbosford (http://www.dieselperformance.com/gmc/index.php) . One of their chips will give you 30-40HP and 60-90 Ft-Lbs. Tell him Jon Bruce sent you in to see him.



Hey GQ diesel mechanic, where exactly would you like him to put that chip? Better pic up some cheeze dip on the way home. :flipoff2:

Pete

Originally posted by pcorssmit


Hey GQ diesel mechanic, where exactly would you like him to put that chip? Better pic up some cheeze dip on the way home. :flipoff2:

Pete

Will do thanks Pete :flipoff2: :D

What year is your truck anyway Paul? There's still stuff you can do to it without chips :p

Hey Paul, You should phone a guy named peirce (604 853 9396), he used to be the #1 guy at Valley fuel injection for years. He recently got his own shop in Abbotsford and is very reasonable. He just did some work on my Cummins and I was very satisfied. He deals with people all over North America and is VERY good.

-Don

[QUOTE]Originally posted by Bear
[B]

That's about the biggest load of crap I've heard in a while. The Duramax hasn't experienced any of the problems that people have been predicting. Lots of rumour and speculation but no proof.



Really? Have you driven one? I'd take the Allison tranny over the Dodge or Ford automatics anytime. Have driven all the newest models and felt the shifts in each (with and without a load), I can honestly say the Allison shifted the hardest. It feels like a real truck tranny to me.

You should take one of these trucks for a spin and decide for yourself rather than relying on the latest rumours.

I did take one for a spin. Felt like a truck trying to be a car with the IFS front end and a typical mushy GM automatic. When I ask a dealer if they have one to test drive with a ZF 6 spd they say "you have to special order a 'standard'". What do GM and its' dealers have against manual transmissions? Anyways, if someone gave me one I'd have to immediately spend thousands of $$ on a front Dana 60.
Charlie

Originally posted by Charles Aarons
I did take one for a spin. Felt like a truck trying to be a car with the IFS front end and a typical mushy GM automatic.

Did you drive one with the Allison or the reg GM auto? I think only the 8.1 and the Duramax come with the Allison.


When I ask a dealer if they have one to test drive with a ZF 6 spd they say "you have to special order a 'standard'". What do GM and its' dealers have against manual transmissions?

Same thing as the Ford and Dodge dealers around here it seems. None of them had a stick. I would have had to special order no matter which truck I picked.

Originally posted by Bear


Did you drive one with the Allison or the reg GM auto? I think only the 8.1 and the Duramax come with the Allison.



Same thing as the Ford and Dodge dealers around here it seems. None of them had a stick. I would have had to special order no matter which truck I picked.

I did test drive one with the Duracrap and the allison, when I was feeling rich and considering replacing my 93 ford with a new one ton dually. The engine felt decent, but not as good as the ford I drove, or the dodge, I could only test the chevy with the allison, they didn't have a stick on the lot, I drove the ford both ways, and the dodge with a NV5600. The allison felt much mushier than the allison that my work truck (f-700 ford with an intercooled 6BT cummins) has, which tries to give you whiplash everytime it shifts, it even felt softer shifting than the ford. I wasn't that impressed with it, which is when I started talking with others, and learned from a buddy who is a GM mechanic about the trannies, and a friend who is a diesel mechanic by trade about the design probelems with the motor. Time will tell on the motors, but the trannies are already becoming a documented probelem.

Originally posted by AIRZUKI


Yes the one and the same.
Paul you should hit him up for a spin on the BD Dyno....... then you can track the progress on beefing up the 6.2...
There was a listing from a guy selling a Bulldog propane injection system in Buy and Sell lat week.....
:D

Well shit, thanks Ben. I know Pat but I didn't know he works there. :cool2: I wonder if they can beat NW Fuel Injection's prices for cleaning, $26 each for cleaning or $48 each including new nozzle tips. Guess I'll have to get ahold of Pat and find out.

Originally posted by Bear


Will do thanks Pete :flipoff2: :D

What year is your truck anyway Paul? There's still stuff you can do to it without chips :p

Jon it's an '82 so I can't use any chips. I'll take a bag of pretzels though. :cow:

I was able to find a new '01 Silverado 4X4 2500HD w/8.1L V8 and ZF6 6-speed on the lot in Santa Fe before Christmas, drove it home for less than $21K. They had a few with the 6-speed, but not many. Maybe with the deal I got I can afford a solid front axle conversion?

anyone running propane injection on a cummins 6bt here? and what kind of price range are the kits? thinking its a cheap way to mod the dodge.