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07-12-2011, 12:04 AM | #26 |
I have a radical idea!
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Re: Questions about a Gas to Diesel conversion for a '72
The bore is .090" bigger on the 6.5, but they share the same stroke. There's a lot of 6.2's that have been in place of 6.5's, and there's no real power difference.
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
07-12-2011, 12:05 AM | #27 |
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Re: Questions about a Gas to Diesel conversion for a '72
Thanks!
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
07-12-2011, 07:53 AM | #28 |
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Re: Questions about a Gas to Diesel conversion for a '72
The last 6.2s and first 6.5s share the same block casting. They are the same engine except bore. You can turbo a 6.2 with 6.5 parts or go to naturally aspired on a 6.5TD with 6.2 (or 6.5NA) parts. There were 6.5NAs offered for a short while,92+.
I mentioned the Isuzu diesel because I know of a conversion done in a square body several years ago. There was talk about using 4BTs,which are not made by GM and with the Duramax being the result of a GM/Isuzu partnership I don't see that it's that far off. Putting any diesel in a 67-72 is to gain some portion of benefit of economy,longativity,and/or power and a step away from keeping it original. We keep these trucks running with foreign made parts,even sold by GM,so...it's just a matter of where you want to draw the line.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
07-12-2011, 08:03 PM | #29 |
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Re: Questions about a Gas to Diesel conversion for a '72
There's a member here on the board that has an Isuzu in a Burb, but I don't remember his username. Those are good engines from what I hear.
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
07-12-2011, 09:14 PM | #30 |
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Re: Questions about a Gas to Diesel conversion for a '72
Is it necessary to remove the evaporator case to get that 6.2 in there? I see yours has been removed but realize that might have been just a preference thing.
That thing sure sounds good out that straight pipe.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
07-12-2011, 09:32 PM | #31 |
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Re: Questions about a Gas to Diesel conversion for a '72
To run a naturally aspirated 6.2/6.5 or one with Banks turbo - No. You do have to remove it to run the '93 - '99 6.5 Turbo set-up because the exhaust exits right where its at. I am going with a Vintage Air A/C system, so removing it was going to be necessary for me anyway.
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
07-12-2011, 09:37 PM | #32 | |
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Re: Questions about a Gas to Diesel conversion for a '72
Quote:
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71 Chevy C10 350/TH350 71 GMC C20 350 (donor truck) 82 Chevy K20 Suburban 6.2/TH400/NP 95 Chevy 4x4 1500 Tahoe 6.5T/4L80E 04 Chevy 4x4 3500 Silverado 6.6T Duramax/Allison 1000 (work truck) 09 Chevy Aveo 1.6L/5 speed manual |
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07-12-2011, 09:48 PM | #33 |
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Re: Questions about a Gas to Diesel conversion for a '72
I think he's talking about the heater core, it's a tight fit. I took mine out when I put a 6.2 in my '68, but mine had been capped up and the heater controls ripped out by the PO, figured it was prob leaky anyway, and I wasn't to worried about it down here in southeast TX.
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07-12-2011, 11:01 PM | #34 |
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Re: Questions about a Gas to Diesel conversion for a '72
1968CHEVYC10
How is your conversion coming along? And Youngen I was talking about the a/c evaporator/ heater case. If you look at 67C30's video you can see how close the engine is to the area where the case would be.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
07-12-2011, 11:22 PM | #35 | |
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Re: Questions about a Gas to Diesel conversion for a '72
Quote:
Oh also need to put some exhaust on... before the neighbors call the cops haha
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07-12-2011, 11:50 PM | #36 |
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Re: Questions about a Gas to Diesel conversion for a '72
We'll all be curious about the performance and more importantly, fuel mileage with your setup.
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Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross |
07-13-2011, 12:11 AM | #37 |
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Re: Questions about a Gas to Diesel conversion for a '72
interesting.
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1972 c-10 shortbed 350/400 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=389157 1968 workhorse http://67-72chevytrucks.com/vboard/s...d.php?t=446216 Accepting part donations |
07-13-2011, 01:22 AM | #38 |
I have a radical idea!
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Re: Questions about a Gas to Diesel conversion for a '72
A 6.2/6.5 fits fine in a 67-72, its the '93 - '99 6.5 turbo system that caused me to have to do away with the heater box. A 6.2 is dimensional smaller and lighter than a BBC, so they fit fine without the GM turbo system. Now you can a Banks turbo like I have for my miltary Blazer with the heater box, because it mounts low. Below is a N/A 6.2 in a '72 C-10 (with factory A/C box) and a video showing how the Banks kit mounts. This video as taking from the wrecked Suburban I bought to get the kit.
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
07-13-2011, 01:26 AM | #39 | |
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Re: Questions about a Gas to Diesel conversion for a '72
Quote:
I fixed your post!
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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07-13-2011, 01:59 AM | #40 |
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Re: Questions about a Gas to Diesel conversion for a '72
hands down for diesel conversion.... 12v cummins....best of both worlds...checy looks, cummins power and 500-600hp on fuel with 20-25 mpg....all day. my buddy has one in his truck. 75 ford with twins making 700 hp and getting 35mpg.... also have a friend doing a cummins in a 70 c10
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04 CHEVY LLY LS DURAMAX 4WD. MODS TO FOLLOW, EFI LIVE, BUILT TRANS, LBZ MP, LIFT PUMP SOLD 1972 chevy c10 |
07-13-2011, 08:12 AM | #41 |
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Re: Questions about a Gas to Diesel conversion for a '72
The Cummins is a great motor. People still go with the GM diesel conversion in GMs because they bolt in and you can buy a lot of diesel with the money you save over the cost of a Cummins conversion. And that's stock. To get 700 hp really takes some fuel money out of your pocket. Hot rods are cool,but when it comes down to it what do you need all the HP for? 35mpg??? I don't think so.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
07-13-2011, 12:34 PM | #42 |
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Re: Questions about a Gas to Diesel conversion for a '72
very true special K, I was thinking the hot rod route...get your point on the chevy diesel conversion... either way they would be nice rides
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04 CHEVY LLY LS DURAMAX 4WD. MODS TO FOLLOW, EFI LIVE, BUILT TRANS, LBZ MP, LIFT PUMP SOLD 1972 chevy c10 |
07-13-2011, 02:04 PM | #43 |
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Re: Questions about a Gas to Diesel conversion for a '72
6.2 will be an easy swamp. good mileage. but they have problems getting out of their own way. possibly a even better boat anchor
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07-13-2011, 03:39 PM | #44 |
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Re: Questions about a Gas to Diesel conversion for a '72
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'68 C10 LWB 6.2NA/NP833 3.73's |
07-13-2011, 05:16 PM | #45 |
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Re: Questions about a Gas to Diesel conversion for a '72
I've logged several hundred thousand miles on my ol' boat anchors! They run good and make good power with a turbo.
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
07-13-2011, 08:04 PM | #46 |
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Re: Questions about a Gas to Diesel conversion for a '72
Boat anchor? I'd like to see you pull one of these up out of the water and put it in the boat everytime you move
I got 275,000 out of my '84 w/Banks Sidewinder when I sold it to a friend who used it as a farm truck in the mountains (hauling hay wagons...you name it) for another 10 or so years. My '92 6.5TD that I sold the '84 to get has 281k on it and runs like a top. I enjoy the hard working truck as much now (if not more) as I did almost 20 years ago when I first got it. That's 556,000 miles from two trucks over 27 years.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
07-13-2011, 08:43 PM | #47 | |
I have a radical idea!
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Re: Questions about a Gas to Diesel conversion for a '72
Quote:
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
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07-13-2011, 09:09 PM | #48 |
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Re: Questions about a Gas to Diesel conversion for a '72
All this talk makes my mouth water. Cant wait to get a cucv, do the swap, and enjoy 25 mpg with a 5 speed manual and a n/a 6.2 in my 71 c10.
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71 Chevy C10 350/TH350 71 GMC C20 350 (donor truck) 82 Chevy K20 Suburban 6.2/TH400/NP 95 Chevy 4x4 1500 Tahoe 6.5T/4L80E 04 Chevy 4x4 3500 Silverado 6.6T Duramax/Allison 1000 (work truck) 09 Chevy Aveo 1.6L/5 speed manual |
07-13-2011, 09:41 PM | #49 |
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Re: Questions about a Gas to Diesel conversion for a '72
Did you get one off government liquidation?
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'67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club! |
07-14-2011, 12:20 AM | #50 |
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Re: Questions about a Gas to Diesel conversion for a '72
Someday I'd like to body swap a longhorn onto a rolled or otherwise damaged regular cab dmax. They have the same wheelbase of 133" so I don't think it would be that hard. Imagine that engine performance, braking, trans, and ride quality with the longhorn body. wouldn't get much better than that for a capable hauler with a classic look. And you can actually leave the truck running while going through a drivethrough.
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67 GMC K1500 Custom- 305V6 SM420, PTO, Ram Assist, yellow (the outcast) (project period correct upgrades) 67 GMC C2500 351V6 TH400, AC, PS, PB (can't decide what to do with. Update, decided to keep and will restore ) 86 CHV K30 502 th400, apple red NEW 71 CHV K20 350 SM465, ochre (saved work truck) 71 CHV K20 292 SM465, white, tach, PTO, (future project) 72 CHV K20 350 350th, medium blue (project stocker) 01 CHV K2500hd crew, indigo blue ^3 dont run and the others don't see winter either '86 K30 Cummins "Fireside" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=649649 '71 K20 "get driveable" thread: http://67-72chevytrucks.com/vboard/s...d.php?t=590642 '72 K20 Build Thread: http://67-72chevytrucks.com/vboard/s...=493477&page=6 |
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