82 Chevrolet Diesel Conversion Question .. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**62 Longbed** · 08-31-2009, 04:28 PM

I FOUND A 1982 CHEVY 1/2 TON PICKUP WITH THE 5.7 OLDSMOBILE DIESEL ..
I WAS WONDERING IF ANYBODY HERE HAS DONE THE DIESEL TO GAS CONVERSION .. I HAVE A SPARE OLDS GAS 350 ENGINE ..I KNOW THAT IT WILL BOLT UP DIRECTLY ... SO I WANTED TO MAKE USE OF IT FOR NOW IF I GOT THE TRUCK .. LATER I CAN GO ALL CHEVY , I WASN'T SURE WHAT CHANGES I WOULD NEED TO MAKE SO IT WILL WORK ..

boatpuller · 08-31-2009, 10:16 PM

mine was a diesel.i didn't actually do the swap myself though.bought it with a gas v8 in it.

Metz · 08-31-2009, 10:28 PM

I have a 79 that was converted. You will have to use the bottom holes for motor mounts ,the fuel tanks will have to be drained and flushed. Use the small fuel line as a fuel return, the olds pump has three lines. Just tag all your wires, and good luck. By the way i just took out the olds and am putting in a 350.

boatpuller · 09-01-2009, 10:44 AM

oh yea,keep the hydroboost.you'll like it.

ElGracho · 09-01-2009, 07:34 PM

If it's an 82 and that's the original engine, it isn't a 350.

82 was the first year of the 6.2 diesel. It has nothing to do with an Olds 350 and has a different transmission mounting pattern. The 6.2 diesel is much closer to a Chevy 350, not in construction, just in engine and transmission mount locations.

If the truck really has the Olds Diesel, is it an 81?

Rob73-87 · 09-02-2009, 05:53 PM

I did that conversion too. Mine is a 1984 and had the 6,2 Diesel with TH 700.
I have put in a Chevy 305 Small Block with TH350 tranny and a different driveshaft with 12 bolt axle out of a 1980 C10.
I got rid of that hydroboost system and installed the brake booster and brake cylinder from the 1980 c10 as well.

It was pretty easy - ahh - I had to use a different type of transmission crossmenber as well - the orginal didn`t fit for a TH350 !!

Rob

alberta kid · 09-02-2009, 06:05 PM

I'm in the final few steps to firing my 84 diesel to gas conversion,I changed everything over to gas ie. brake boster,brake peddel,wiring harnes,rad and the trany.I just drained the tanks and filled them with premeaum gas.Good luck.

thirdstreettito · 09-03-2009, 11:50 PM

Why in the world would you convert it from diesel to gas?

Northern lights · 09-03-2009, 11:59 PM

Quote:

Originally Posted by thirdstreettito

Why in the world would you convert it from diesel to gas?

My thought exactly.

moneyeater · 09-04-2009, 03:11 AM

Quote:

Originally Posted by thirdstreettito

Why in the world would you convert it from diesel to gas?

If it is the olds diesel iwould change too! I did exactly that and changed to a 6.2 liter diesel.That was a great improvement and that motor had some parteating power and crunched the tranny,alternator ,powersteeringpump and all the parts that were from the oldsdiesel!
In the progress of the frameoff resto i did i decided to go and put a smallblock 350 gasengine in because of the looks and easier and cheaper maintenance!
With the gasprices these days i would change back but would use a 6.5 liter diesel with turbo!
Since my truck is more hobby to me i´d like to insall a LS gasengine!
The swap from diesel to gas isn´t to complicated because you need less wiring and have more room in the enginecompartment!
Volker

79gmcc15 · 09-04-2009, 04:47 AM

and why would you switch the brake booster to gas? Hydro boost is the cats arse!

moneyeater · 09-05-2009, 01:55 AM

Quote:

Originally Posted by 79gmcc15

and why would you switch the brake booster to gas? Hydro boost is the cats arse!

In my case the powersteeringpump with the three outlets was defective and i couldn´t get the right new one.Also i think there was a fittingproblem with the brackets. The hydroboostsystem itself is cool and i still have it in my storage!
Since i bought a whole bunch of parts with a working vacuumbooster and a new chrome steeringpump i installed them and they work nice too!
If i find one nice pump and some brackets i may reconvert to hydroboost!
Volker

79gmcc15 · 09-05-2009, 04:05 AM

well I guess ya gotta do what ya gotta do

**62 Longbed** · 09-05-2009, 02:35 PM

THANKS EVERYBODY FOR THE INPUT !!!! THE TRUCK IS A ONE OWNER .. I PICKED IT UP YESTERDAY , AND IT IS AN 81" MODEL YEAR TRUCK ... MY TYPING MISTAKE ... BAD 350 OLDS DIESEL .. THATS WHY I'M GONNA DO THE CONVERSION .. PLUS I HAVE A GOOD MOTOR SITTING ON THE STAND ... SAVES ME MONEY AT THIS POINT ...

sailed2japan · 09-05-2009, 11:27 PM

If the tranny has the Olds bolt pattern, I think it would be bad ass to put a 455 in it. alot of people would think it was just a big block, but for those of use who know...

08-31-2009, 04:28 PM	#1
62 Longbed Senior Member Join Date: Nov 2008 Location: Gresham , Oregon Posts: 588	82 Chevrolet Diesel Conversion Question .. I FOUND A 1982 CHEVY 1/2 TON PICKUP WITH THE 5.7 OLDSMOBILE DIESEL .. I WAS WONDERING IF ANYBODY HERE HAS DONE THE DIESEL TO GAS CONVERSION .. I HAVE A SPARE OLDS GAS 350 ENGINE ..I KNOW THAT IT WILL BOLT UP DIRECTLY ... SO I WANTED TO MAKE USE OF IT FOR NOW IF I GOT THE TRUCK .. LATER I CAN GO ALL CHEVY , I WASN'T SURE WHAT CHANGES I WOULD NEED TO MAKE SO IT WILL WORK ..

08-31-2009, 10:16 PM	#2
boatpuller Registered User Join Date: Sep 2005 Location: Sun City West, Az Posts: 3,822	Re: 82 Chevrolet Diesel Conversion Question .. mine was a diesel.i didn't actually do the swap myself though.bought it with a gas v8 in it. __________________ " Never look up a dead dogs butt."

08-31-2009, 10:28 PM	#3
Metz Registered User Join Date: Jul 2009 Location: Rockvale,Tn Posts: 44	Re: 82 Chevrolet Diesel Conversion Question .. I have a 79 that was converted. You will have to use the bottom holes for motor mounts ,the fuel tanks will have to be drained and flushed. Use the small fuel line as a fuel return, the olds pump has three lines. Just tag all your wires, and good luck. By the way i just took out the olds and am putting in a 350.

09-01-2009, 10:44 AM	#4
boatpuller Registered User Join Date: Sep 2005 Location: Sun City West, Az Posts: 3,822	Re: 82 Chevrolet Diesel Conversion Question .. oh yea,keep the hydroboost.you'll like it. __________________ " Never look up a dead dogs butt."

09-01-2009, 07:34 PM	#5
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,553	Re: 82 Chevrolet Diesel Conversion Question .. If it's an 82 and that's the original engine, it isn't a 350. 82 was the first year of the 6.2 diesel. It has nothing to do with an Olds 350 and has a different transmission mounting pattern. The 6.2 diesel is much closer to a Chevy 350, not in construction, just in engine and transmission mount locations. If the truck really has the Olds Diesel, is it an 81? __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed Last edited by ElGracho; 09-01-2009 at 07:35 PM. Reason: Clarification...

09-02-2009, 05:53 PM	#6
Rob73-87 Registered User Join Date: Feb 2008 Location: Nuremberg, Germany Posts: 116	Re: 82 Chevrolet Diesel Conversion Question .. I did that conversion too. Mine is a 1984 and had the 6,2 Diesel with TH 700. I have put in a Chevy 305 Small Block with TH350 tranny and a different driveshaft with 12 bolt axle out of a 1980 C10. I got rid of that hydroboost system and installed the brake booster and brake cylinder from the 1980 c10 as well. It was pretty easy - ahh - I had to use a different type of transmission crossmenber as well - the orginal didn`t fit for a TH350 !! Rob __________________ 1982 C-10 SWB (soon dropped, 383ci, but restored stock appearance) 1984 C-10 LWB, dropped, custom paint 1996 Plymouth Voyager (Daily Driver "The Mule") 2008 Caliber R/T (Daily Driver)

09-02-2009, 06:05 PM	#7
alberta kid Registered User Join Date: Jul 2009 Location: strathmore alberta Posts: 19	Re: 82 Chevrolet Diesel Conversion Question .. I'm in the final few steps to firing my 84 diesel to gas conversion,I changed everything over to gas ie. brake boster,brake peddel,wiring harnes,rad and the trany.I just drained the tanks and filled them with premeaum gas.Good luck.

09-03-2009, 11:50 PM	#8
thirdstreettito Resident of Here Join Date: May 2008 Location: Wesley Chapel, FL, USA Posts: 7,716	Re: 82 Chevrolet Diesel Conversion Question .. Why in the world would you convert it from diesel to gas? __________________ ~Bradley~ 2004 Black GTO LS2/T56 too much to list Miss having a truck

09-04-2009, 04:47 AM	#11
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: 82 Chevrolet Diesel Conversion Question .. and why would you switch the brake booster to gas? Hydro boost is the cats arse! __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

09-05-2009, 04:05 AM	#13
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: 82 Chevrolet Diesel Conversion Question .. well I guess ya gotta do what ya gotta do __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

09-05-2009, 02:35 PM	#14
62 Longbed Senior Member Join Date: Nov 2008 Location: Gresham , Oregon Posts: 588	Re: 82 Chevrolet Diesel Conversion Question .. THANKS EVERYBODY FOR THE INPUT !!!! THE TRUCK IS A ONE OWNER .. I PICKED IT UP YESTERDAY , AND IT IS AN 81" MODEL YEAR TRUCK ... MY TYPING MISTAKE ... BAD 350 OLDS DIESEL .. THATS WHY I'M GONNA DO THE CONVERSION .. PLUS I HAVE A GOOD MOTOR SITTING ON THE STAND ... SAVES ME MONEY AT THIS POINT ...

09-05-2009, 11:27 PM	#15
sailed2japan Jonny Join Date: Apr 2008 Location: Outside the Box, Austin,TX Posts: 741	Re: 82 Chevrolet Diesel Conversion Question .. If the tranny has the Olds bolt pattern, I think it would be bad ass to put a 455 in it. alot of people would think it was just a big block, but for those of use who know... __________________ 1966 C30, Cummins, stacks, and a flat bed in progress... "Honor.....simply put, A veteran - whether active duty, retired, national guard or reserve is someone who, at one time in his life, wrote a blank check made payable to 'The United States of America', for an amount of 'up to and including his life.' That is Honor, and there are way too many people in this country who no longer understand it." -AEC Hundley USNR Last edited by sailed2japan; 09-05-2009 at 11:27 PM.



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