1987 6.2 diesel swap in gas 350,454 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

matt_field · 09-01-2008, 01:32 PM

hey guys, im new to the 73-87 board, i have a few 67-72 trucks. Anyways im looking into buying a 87 chev rollback with a 6.2 diesel engine in it, it has a 4 speed trans i belive. i want to put in a good running 350, or 454 gas motor. what is all involved? motor mounts the same? belhousing? fuel lines? can i just flush the fuel tank and lines out, and put gas in there? thanks guys!!

Matt

ElGracho · 09-01-2008, 01:45 PM

Motormounts and bellhousing for the 6.2 are the same as other Chevy engines. Very swappable. Fuel lines on an 87 cab and chassis with a diesel are very close if not exactly like a carbed truck from 86 or earlier. Same with the fuel tanks but you may want to do more than flush them. They are cheap to just replace (about 100 bucks a piece) so you may just want to do that to prevent problems down the road. If you want to just use them, make sure you install a fuel filter that's easy to get to in case you end up with some crud dropping off the inside of the tank when it gets gas in it.

I can understand wanting more power than the 6.2 has for a big truck, but you're gonna hate the mileage...

**old Rusty C10** · 09-01-2008, 06:13 PM

you could take the tanks out and bring em to a radiator shop and have em boiled out to get rid of any diesel residue

Dads 68 GMC · 09-01-2008, 06:29 PM

I pulled a 6.2 @ installed a 350 gas into my 83 gmc 4x4 years ago @ never had any problems. I had a muffler shop put new down pipes in @ connected that to the old exhaust. the hot wire that run the injecter pump hooked right into my hei dist. It was all a real easy swap, never even flushed my fuel tanks, good luck

GM72K10 · 09-01-2008, 10:24 PM

Easy Swap. Fuel tanks are the same, no need to flush except for possible rust issues. BTW, I have both a one ton gas and diesel, 6.2 has a lot more umph than the gas 350. What's wrong the 6.2?

09-01-2008, 01:32 PM	#1
matt_field Registered User Join Date: Apr 2001 Location: Detroit Lakes, Minnesota Posts: 885	1987 6.2 diesel swap in gas 350,454 hey guys, im new to the 73-87 board, i have a few 67-72 trucks. Anyways im looking into buying a 87 chev rollback with a 6.2 diesel engine in it, it has a 4 speed trans i belive. i want to put in a good running 350, or 454 gas motor. what is all involved? motor mounts the same? belhousing? fuel lines? can i just flush the fuel tank and lines out, and put gas in there? thanks guys!! Matt __________________ 1971 k5 blazer 80k mike survivor 1972 3/4 ton 4wd Cummins 12v 1967 swb 2wd 427bbc 1968 4wd shortbox 1971 Cheyenne swb k10 unrestored 1971 Cheyenne super 40k 402bb survivor 1967 Chevy k10 (first truck) 1968 L78 camaro survivor 18k miles 1969 z28 survivor 60k miles 1969 z28 survivor 39k miles 1969 z28 rs survivor 80k miles

09-01-2008, 01:45 PM	#2
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,553	Re: 1987 6.2 diesel swap in gas 350,454 Motormounts and bellhousing for the 6.2 are the same as other Chevy engines. Very swappable. Fuel lines on an 87 cab and chassis with a diesel are very close if not exactly like a carbed truck from 86 or earlier. Same with the fuel tanks but you may want to do more than flush them. They are cheap to just replace (about 100 bucks a piece) so you may just want to do that to prevent problems down the road. If you want to just use them, make sure you install a fuel filter that's easy to get to in case you end up with some crud dropping off the inside of the tank when it gets gas in it. I can understand wanting more power than the 6.2 has for a big truck, but you're gonna hate the mileage... __________________ 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

09-01-2008, 06:13 PM	#3
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	Re: 1987 6.2 diesel swap in gas 350,454 you could take the tanks out and bring em to a radiator shop and have em boiled out to get rid of any diesel residue __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

09-01-2008, 06:29 PM	#4
Dads 68 GMC Registered User Join Date: Feb 2006 Location: Sidney; MT Posts: 172	Re: 1987 6.2 diesel swap in gas 350,454 I pulled a 6.2 @ installed a 350 gas into my 83 gmc 4x4 years ago @ never had any problems. I had a muffler shop put new down pipes in @ connected that to the old exhaust. the hot wire that run the injecter pump hooked right into my hei dist. It was all a real easy swap, never even flushed my fuel tanks, good luck

09-01-2008, 10:24 PM	#5
GM72K10 Next! Join Date: Jan 2003 Location: Eastern Pa. Posts: 2,483	Re: 1987 6.2 diesel swap in gas 350,454 Easy Swap. Fuel tanks are the same, no need to flush except for possible rust issues. BTW, I have both a one ton gas and diesel, 6.2 has a lot more umph than the gas 350. What's wrong the 6.2? __________________ 86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck

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