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  • 6.2L what too look for

    I've been looking around at the oobs chevy m1008s and was wondering what problems i should look for with the engine and anything else when looking at these trucks. any help would be greatly appreciated thanks.
    74k20
    mild 383 stroker
    8inches on 37in grapplers

  • #2
    Re: 6.2L what too look for

    bump
    74k20
    mild 383 stroker
    8inches on 37in grapplers

    Comment


    • #3
      Re: 6.2L what too look for

      glowplugs, make sure the controller works when you turn the key on, and it should start rather easy.

      glowplugs are PITA to replace and the controllers always go bad.

      other than that. look for white smoke
      Currently-
      -91 RCLB C1500 silverado 4.3L 5 speed GU4 G80 beater truck
      -91 Dodge 350 4x4 12v Cummins/5spd 384hp/802tq


      SOLD and missed-- 91 RCSB GMC, restored Black on black, 2/4 drop, 17x9 Torq thrusts, built 350tbi, 5 speed w/hurst shifter, 3.42 G80--- Over 400,000 miles on body

      Comment


      • #4
        Re: 6.2L what too look for

        alright thanks a bunch. and chances are the trannies are most likely good in them even thought they have been sitting right?
        74k20
        mild 383 stroker
        8inches on 37in grapplers

        Comment


        • #5
          Re: 6.2L what too look for

          oh yea also what kinda power increments could i get out of one with exhaust and cold air intake?
          74k20
          mild 383 stroker
          8inches on 37in grapplers

          Comment


          • #6
            Re: 6.2L what too look for

            wouldnt worry about power upgrades, just keep the fuel and air filters clean. Possibly convert the factory box filter to a spin on NAPA kit.

            The M1008 I am working on currently had been parked since 2000, all I did was add 2 fresh batteries and 5 gallons of fresh diesel.......started right up. The factory glowplug controller fried out and was replaced with a ford starter solenoid and a momentary switch, Count to 20 and turn it over to start.
            Last edited by Black06; 12-07-2009, 10:03 PM.

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            • #7
              Re: 6.2L what too look for

              alright great. how many miles and what kind of shape was yours? and if ya dont mind me asking howmuch did you pay?
              74k20
              mild 383 stroker
              8inches on 37in grapplers

              Comment


              • #8
                Re: 6.2L what too look for

                I'd hold out to get the serpentine equipped engines from the late 80's but it seems you'll be picking up a j-code engine, which is much better than the civy version.

                Less emissions and less problems the 6.2L is no powerhouse, but i truly do like the engine. It was slow, so it kept me out of trouble with the local police. Had plenty of towing torque, you don't feel it too much unloaded, but it feels exactly the same even with a load aboard.

                I was able to tow my 98 home with my K5 w/6.2L just above idle all the way home through town, uphill, etc.


                1983 Jimmy Sierra Classic-Future LSX Swap Recipient
                2002 Silverado 2500HD CCSB LT-Daily Driver
                1995 Corsica-Super-Sleeper in Progress

                Comment


                • #9
                  Re: 6.2L what too look for

                  alright thanks yeai been looking at em for a while now just waiting on the right time to grab one. theres one on craigslist for $2500 i could probably haggle down to less. it has 64,000 miles bodys in decent condition but definately will need work and interiors a little beat up but nothing terrible. figure if i got it id throw a 6 or 8 inch on it and some 38s and try squeezing 20 mpg out of it. id end up saving a ton of money compared to the 13.7mpg i gettin now
                  74k20
                  mild 383 stroker
                  8inches on 37in grapplers

                  Comment


                  • #10
                    Re: 6.2L what too look for

                    With the right gearing to fit with the tires, i don't see it being impossible to get 20mpg. I was able to squeeze some good numbers out my 6.2, even with 31's and 3.42 gears.

                    I think the m1008's come with quite low (numerically high) gears anyway, so you should be fine. Alot of people give these engines flack, but they've been in the military spec Hummers since they've been released and only upgraded to 6.5L TD just for more power.

                    if it's good for the Hummers, then it's good for me, i say :)


                    1983 Jimmy Sierra Classic-Future LSX Swap Recipient
                    2002 Silverado 2500HD CCSB LT-Daily Driver
                    1995 Corsica-Super-Sleeper in Progress

                    Comment


                    • #11
                      Re: 6.2L what too look for

                      M1008 trucks come with 4.56 gears...and a TH400 trans.

                      Its near impossible to drive one of them trucks on the road because they top out at 50mph ...thats with your foot to the floor.

                      they make awesome mud trucks though, they already have 4.56's...and a locker in the rear...in some cases they had front lockers but that seems to be rare.

                      6.2..TH400....14BFF....D60 front....about the most bulletproof setup ever. 6.2 being the weakest link
                      Currently-
                      -91 RCLB C1500 silverado 4.3L 5 speed GU4 G80 beater truck
                      -91 Dodge 350 4x4 12v Cummins/5spd 384hp/802tq


                      SOLD and missed-- 91 RCSB GMC, restored Black on black, 2/4 drop, 17x9 Torq thrusts, built 350tbi, 5 speed w/hurst shifter, 3.42 G80--- Over 400,000 miles on body

                      Comment


                      • #12
                        Re: 6.2L what too look for

                        Originally posted by crossy's son View Post
                        M1008 trucks come with 4.56 gears...and a TH400 trans.

                        Its near impossible to drive one of them trucks on the road because they top out at 50mph ...thats with your foot to the floor.

                        they make awesome mud trucks though, they already have 4.56's...and a locker in the rear...in some cases they had front lockers but that seems to be rare.

                        6.2..TH400....14BFF....D60 front....about the most bulletproof setup ever. 6.2 being the weakest link
                        Slap an NV4500 or even an SM465 in there and it would be much better. the 6.2 isn't the greatest but maintained correctly it won't let you down.

                        Mine still starts up even after sitting for 2 years good ol beast :rocking:


                        1983 Jimmy Sierra Classic-Future LSX Swap Recipient
                        2002 Silverado 2500HD CCSB LT-Daily Driver
                        1995 Corsica-Super-Sleeper in Progress

                        Comment


                        • #13
                          Re: 6.2L what too look for

                          yea with that ratio and 38s ill be able to cruise at more that 50. the only reason you cant get over 50 with em is beacuse that low gear ratio with the 31s that come with it right?
                          74k20
                          mild 383 stroker
                          8inches on 37in grapplers

                          Comment


                          • #14
                            Re: 6.2L what too look for

                            Originally posted by elsurfo10 View Post
                            yea with that ratio and 38s ill be able to cruise at more that 50. the only reason you cant get over 50 with em is beacuse that low gear ratio with the 31s that come with it right?
                            Yeah, with a bigger tire, you'll end up right around where it will be good to cruise.

                            Sounds like you won't need to be doing alot of cruising with this truck anyway. Sounds like it'll be a fun/playtoy that sees occasional road use. I'm not sure many people would want to daily a truck with 38's. I know of a guy who does with his Suburban though (with 454) but he's got money to burn.


                            1983 Jimmy Sierra Classic-Future LSX Swap Recipient
                            2002 Silverado 2500HD CCSB LT-Daily Driver
                            1995 Corsica-Super-Sleeper in Progress

                            Comment


                            • #15
                              Re: 6.2L what too look for

                              SM465 is 1:1 4th, like the TH400.

                              There will be a harldy noticeable difference between the two...

                              NV4500 however is a sweet idea
                              Currently-
                              -91 RCLB C1500 silverado 4.3L 5 speed GU4 G80 beater truck
                              -91 Dodge 350 4x4 12v Cummins/5spd 384hp/802tq


                              SOLD and missed-- 91 RCSB GMC, restored Black on black, 2/4 drop, 17x9 Torq thrusts, built 350tbi, 5 speed w/hurst shifter, 3.42 G80--- Over 400,000 miles on body

                              Comment

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