The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Questions about a Gas to Diesel conversion for a '72

67_C-30 · 07-08-2011, 12:54 AM

The cheapest, easiest conversion would be a 6.2 or 6.5 diesel. Without a turbo, they are not the all that powerful, but with a turbo they'll run similiar your 350 but will get 20+ MPG in a 1/2 ton pickup. I put a 6.5 turbo on a low mileage miltary takeout (they came in HumVee's, M1008, M1009 miltary Chevy trucks) a '67 C-30 dually. Low mileage Miltary HumVee takeout engines range between $400 - $1000, and it will bolt your existing transmission. You will need big block motor mounts, but otherwise they are direct bolt in. The only thing you have to do with the fuel system is run a return line to the tank. Your '72 probably already has one, but my '67 didn't. Best of all,there is no computer, or electronics. They have mechanical injection pumps and it is as simple as running your coil wire to the IP, and it will run. Here's my build thread and some pics.

http://67-72chevytrucks.com/vboard/s...d.php?t=254096

07-08-2011, 12:54 AM	#2
67_C-30 I have a radical idea! Join Date: Jan 2005 Location: Sweet Home Alabama! Posts: 6,513	Re: Questions about a Gas to Diesel conversion for a '72 The cheapest, easiest conversion would be a 6.2 or 6.5 diesel. Without a turbo, they are not the all that powerful, but with a turbo they'll run similiar your 350 but will get 20+ MPG in a 1/2 ton pickup. I put a 6.5 turbo on a low mileage miltary takeout (they came in HumVee's, M1008, M1009 miltary Chevy trucks) a '67 C-30 dually. Low mileage Miltary HumVee takeout engines range between $400 - $1000, and it will bolt your existing transmission. You will need big block motor mounts, but otherwise they are direct bolt in. The only thing you have to do with the fuel system is run a return line to the tank. Your '72 probably already has one, but my '67 didn't. Best of all,there is no computer, or electronics. They have mechanical injection pumps and it is as simple as running your coil wire to the IP, and it will run. Here's my build thread and some pics. http://67-72chevytrucks.com/vboard/s...d.php?t=254096 Attached Images __________________ '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!