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07-14-2011, 08:33 AM | #51 |
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Re: Questions about a Gas to Diesel conversion for a '72
Waiting for one to pop up on craigslist. Im hesitant about surplus because ive heard they cost up to 3-4k on average. Way over my budget. Ive seen a xouple on craigslist in my area for 1-2k running but rotted, which is fine by me. Plus, the surplus aparently take awhile with governemt paper work before it can actually be yours. And i have to have this project done by september.
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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 |
07-14-2011, 09:12 PM | #52 | |
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Re: Questions about a Gas to Diesel conversion for a '72
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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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07-15-2011, 07:24 AM | #53 |
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Re: Questions about a Gas to Diesel conversion for a '72
I was thinking about putting a t5 behind the n/a 6.2. It has a 2.94 1st and a .73 od. If my math is correct, with stock tires at 28.5 inches, .73 od, 70 mph, and 3.08 in the back it is roughly around 1800 rpm which is according to dieselplace.com the rpm/mpg sweet spot. Plus, it should actually get better off the line than the turbo 400 because of the 2.94 1st vs 2.54 with 3.08. Reason im asking for someone's thoughts was because everyone has said 3.08 and a 700r4 (.7) od, will kill mpg but thats for gas, it looks to be beautiful for diesel.
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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 |
07-15-2011, 07:45 AM | #54 |
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Re: Questions about a Gas to Diesel conversion for a '72
I haven't checked,but I figure my '85 Jimmy 6.2/700r4 came through with 3.08s. I never drove it to check mileage before going with 3/4t 4.10 axles with 35" tires. That puts my ratio at right about 3.73,based on the stock 3/4t 235/85 tires at about 31". That stuff came from my '91 Suburban 6.3/4L80E which got 22 mpg on hiway with all that. These things have more low end torque than most give credit. 1800 rpm would be a breeze to this NA motor.
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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 ~ |
07-25-2011, 09:12 PM | #55 |
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Re: Questions about a Gas to Diesel conversion for a '72
Well if you need more motivation, just took my truck on a little road trip and got 22mpg, and it even has a leaky injector.
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'68 C10 LWB 6.2NA/NP833 3.73's |
07-25-2011, 09:55 PM | #56 |
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Location: mitchellville, ia
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Re: Questions about a Gas to Diesel conversion for a '72
6.2/6.5s love to toast injection pumps and lift pumps. You are money ahead in the long run to go Cummins. Here is a 72 build you could look into.
http://67-72chevytrucks.com/vboard/s...d.php?t=310493
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1996 Dodge 2500 Ext Cab Long Bed P24V Cummins Turbo Diesel 5 speed 4x4
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07-25-2011, 10:55 PM | #57 | |
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Re: Questions about a Gas to Diesel conversion for a '72
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07-26-2011, 12:23 AM | #58 | |
I have a radical idea!
Join Date: Jan 2005
Location: Sweet Home Alabama!
Posts: 6,513
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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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