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Thread: M1008 retro build

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    2 Star General Kaiser67M715's Avatar
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    Default M1008 retro build

    Figured I'd post up my build here, it's based on a M1008 truck chassis, but with some major differences.

    First, I went with cab and chassis dually axles-they should be 4:10, but I have yet to confirm.


    I also did 63" Chevy 1 ton springs- almost all new trucks use this longer spring to help improve ride quality, without sacrificing load capacity. This will mean either 16 gallon side tanks, or a rear mount fuel tank.


    Next, I removed the 6.2 and th400, I am swapping in a 292 in line 6, with an NV4500. I would like to think had GM not had the 6.2 diesel, they would have used the 292 in the CUCV models, as it is a great base engine, and widely used in fleet trucks.


    Because of the unique motor mount set up, I had to modify the passenger frame mount-as over 2 months of searching and calling salvage yards yielded no results for the correct 292 crossmember and frame mount. I lucked out and three holes already lined up.






    More to come later.

    Sent from my SM-S920L using Tapatalk
    1952 M35 "Gasser"
    1967 Kaiser M715(project)
    1985 GMC K1500 6.5 Turbo-Diesel
    1975 VW Beetle(project)
    1991 GMC K2500 6.2 Diesel

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    Default

    WOW a 292, I haven't seen one of those in years. Looking good but a lot more work than I want to get into now a days!

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    I also like the 292's. The last one that I seen used was in a 85 S10. Talk about a tight fit. Say Kaiser I can not wait for a fuel mileage assessment.
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    2 Star General Kaiser67M715's Avatar
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    Quote Originally Posted by nyoffroad View Post
    WOW a 292, I haven't seen one of those in years. Looking good but a lot more work than I want to get into now a days!
    I have a lot of time in the winter, it's a pain if I need to paint, but I can do a lot of mechanical work. I have planned a 292 truck for a while, this was a low mile engine from a lightly used farm truck, less then 20,000 original miles.
    Quote Originally Posted by cucvmule View Post
    I also like the 292's. The last one that I seen used was in a 85 S10. Talk about a tight fit. Say Kaiser I can not wait for a fuel mileage assessment.
    My brother had a 72 C20, 5:13 rear end and SM465, he was getting 15mpg with a little work, I'm hoping for the same pushing the Dana 60 and the overdrive.


    I have started clearing the front frame of all brackets, I will scrub/brush/sand and get a couple coats of Chassis Saver. The frame is pretty clean, so I hope I can stop what little rust there is before it gets too bad.


    I also cut the hole in for the NV4500 shifter.


    All the brackets will be sand-blasted in my cabinet, then all coated with epoxy primer and black paint. The nuts and bolts are really just surface rust, I've done vinegar baths before, also done evapo-rust, so those will be cleaned and reused.

    Sent from my SM-S920L using Tapatalk
    1952 M35 "Gasser"
    1967 Kaiser M715(project)
    1985 GMC K1500 6.5 Turbo-Diesel
    1975 VW Beetle(project)
    1991 GMC K2500 6.2 Diesel

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    2 Star General Kaiser67M715's Avatar
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    Brackets removed, I removed all the brake lines, they will be replaced, I was debating not, but one of them had a pin hole and it started leaking, not worth saving a few bucks saving them.

    Cleaning up real nice, should be able to paint tomorrow no problem.


    Sent from my SM-S920L using Tapatalk
    1952 M35 "Gasser"
    1967 Kaiser M715(project)
    1985 GMC K1500 6.5 Turbo-Diesel
    1975 VW Beetle(project)
    1991 GMC K2500 6.2 Diesel

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    4 Star General ken's Avatar
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    It's good to see I'm not the only one. My first CUCV I swapped a 292 into. I used to 1/2 inch plates and drilled the bolt holes to fit the passenger side mount. It's the only GM engine built that way. I used a Clifford 4BBL intake and duel headers into a 3 inch exhaust. With a 3 chamber flowmaster muffler. When you get it above 2500 PRMs it sounds like a Cessna 172 trying to take off. I used a 625 cfm carter 4 BBL carb. The 14 inch air cleaner clears the maser cylinder by about 1/2 inch. I used a SM465 and kept the 4.56 gears. I lifted it 2 1/2 inches and run 33 inch super swamper tires. Yours is looking good.
    Kenny
    1966 M35A2C
    1986 M105
    1952 M37
    1966 M101
    1986 M1028A1
    1988 M101
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    LLM/Member 785 Recovry4x4's Avatar
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    Interesting build for sure. Will you be using a 208 transfer case? I did the chassis cab rear and 4.10s in mine. I have a 4500 waiting to go in.
    1986 M1008
    1984 M1031
    1984 M1010

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    2 Star General Kaiser67M715's Avatar
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    Quote Originally Posted by ken View Post
    It's good to see I'm not the only one. My first CUCV I swapped a 292 into. I used to 1/2 inch plates and drilled the bolt holes to fit the passenger side mount. It's the only GM engine built that way. I used a Clifford 4BBL intake and duel headers into a 3 inch exhaust. With a 3 chamber flowmaster muffler. When you get it above 2500 PRMs it sounds like a Cessna 172 trying to take off. I used a 625 cfm carter 4 BBL carb. The 14 inch air cleaner clears the maser cylinder by about 1/2 inch. I used a SM465 and kept the 4.56 gears. I lifted it 2 1/2 inches and run 33 inch super swamper tires. Yours is looking good.
    I'm planning either a 2.5" lift or 4", leaning to 2.5" depends on clutch slave clearance. There's 2" clearance with stock springs-which means not enough upward travel to provide adequate clearance.

    My plan for the 292 is long tube headers, 2.25" exhaust, and some sort of single chamber design mufflers. Offenhauser 4 barrel intake with a Holley 350 CFM 2 barrel carburetor.
    Quote Originally Posted by Recovry4x4 View Post
    Interesting build for sure. Will you be using a 208 transfer case? I did the chassis cab rear and 4.10s in mine. I have a 4500 waiting to go in.
    If I can find a 205 for a reasonable price(and funds permit) in the correct 6 bolt pattern I would do the 205. Currently I am sticking with the NP208, they are plentiful and cheap.


    Weather was not permitting last weekend, I got most of the frame from forward cab mounts to front all cleaned and ready for paint- Chassis Saver paint requires at least a 3 hr dry between coats, so slapping a couple coats on during the week isn't possible. I will bring our workplace diesel torpedo heater home to help maintain temperatures and do a couple coats on Saturday.


    Sent from my SM-S920L using Tapatalk
    1952 M35 "Gasser"
    1967 Kaiser M715(project)
    1985 GMC K1500 6.5 Turbo-Diesel
    1975 VW Beetle(project)
    1991 GMC K2500 6.2 Diesel

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    4 Star General Keith_J's Avatar
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    The reason GM built the 6.2 diesel was fuel economy. Diesel was cheaper. The reason the DoD used it was single fuel battlefield.
    If not for single fuel battlefield, the 292 would have been used. But with a TH400.
    1986 M1031 SECM.
    1985 MEP 002A
    1974 MEP 026C, eventually converting to electric start.

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    2 Star General Kaiser67M715's Avatar
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    I knew I was replacing the frame shackle bushings anyways, but the old ones were definitely past their useful life!



    The one worn all the way through is the drivers side, the spring was actually contacting the frame.

    Sent from my SM-S920L using Tapatalk
    1952 M35 "Gasser"
    1967 Kaiser M715(project)
    1985 GMC K1500 6.5 Turbo-Diesel
    1975 VW Beetle(project)
    1991 GMC K2500 6.2 Diesel

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