btrapr
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- Monroe, NC
THIS ONE GOT AWAY____I am buying a 1986 1 1 /4 Ton military 4x4, "J" code 6.2, with 68K on the odometer...
I have a Few questions
Vehicle MODEL #-
Not sure what model this is 1028? 1031? This thing has a 45mph max painted on the glovebox...When drove it it was really wound up at 55mph....
***What gear ratios did these have...I would guess around a 4:56
Axle model-
What axles are they front/ear so I can price some 3:73's (if you think that will get me 70mph for freeway driving..or would i be better off with 3:42's because I want to leave the th400 trans in there! This thing shifts like its got a shift kit...WHAT gears should I be looking for???
Motor
Did all of these have the 20:1 compression pistons or the 23:1 as most 6.2's...I know there replacement pistons were the 20:1's. I am wondering because i have a complete 6.5 GM-8 turbo set-up I would like to put on it...and add an intercooler and high output water pump.
I also ran across three 6.2 J's that I had to buy...$300 and i could not walk away. I will be tearing one them down and doing some port/polish work on them and rebuild it to put in my 1990 Suburban that currently has a tired 6.2 with a Banks Sdiewinder trubo on it.
Thanks in advance
I have a Few questions
Vehicle MODEL #-
Not sure what model this is 1028? 1031? This thing has a 45mph max painted on the glovebox...When drove it it was really wound up at 55mph....
***What gear ratios did these have...I would guess around a 4:56
Axle model-
What axles are they front/ear so I can price some 3:73's (if you think that will get me 70mph for freeway driving..or would i be better off with 3:42's because I want to leave the th400 trans in there! This thing shifts like its got a shift kit...WHAT gears should I be looking for???
Motor
Did all of these have the 20:1 compression pistons or the 23:1 as most 6.2's...I know there replacement pistons were the 20:1's. I am wondering because i have a complete 6.5 GM-8 turbo set-up I would like to put on it...and add an intercooler and high output water pump.
I also ran across three 6.2 J's that I had to buy...$300 and i could not walk away. I will be tearing one them down and doing some port/polish work on them and rebuild it to put in my 1990 Suburban that currently has a tired 6.2 with a Banks Sdiewinder trubo on it.
Thanks in advance
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