my 1988 GMC 7000 dump truck story

[b454rat]

Believe 502 is standard deck and 572 is tall....

[rkn463]

Originally Posted by b454rat

Believe 502 is standard deck and 572 is tall....

That is good info, thanks.

[sweetk30]

if I decide to keep it and make a big boy toy out of it . . .

I was planning military 5ton axles that come with air brake . and also the 5ton transfer case as high range is .7xx over drive to help over come the 6.44:1 axle gear combo . plan on a 46-48" tall tire combo also .

just a few ideas kicking around in my head.

[sweetk30]

got back there today and plowed the road up to the truck so I get it towed out by the end of the week when the road is melted off for the BIG tow truck to get up there .

vin decode and air cleaner tag show 366 engine. . . but air cleaner tag shows 7.4 also . searching internet this seems to have been a common thing .

I got a idea tho . I have a line of a 8.1 big block complete take out . this would be a great repower for it and its from a med duty truck already .

gvw on the tag on the side of the cab door frame 9000k frt / 19000k rear / total 28k gvw truck .

glove box had 2 FULL rpo code sheets in it.

showed :
038 / 6.57 ratio rear
fxv / 149 inch wheel base
gyh / aux rear springs
kra / engine gov 3800

way to many to list up . . .

anyone got a good rpo code brake down list ?

[rkn463]

Originally Posted by sweetk30

way to many to list up . . .

anyone got a good rpo code brake down list ?

I can take a shot of a list I have and post it later this evening.

-Richard

[rkn463]

Originally Posted by rkn463

I can take a shot of a list I have and post it later this evening.

-Richard

Sorry, a bit late on this. These are the codes from 1988, best I can tell they used the same codes for years. All of these agreed with what was on my 89.

-Richard

[sweetk30]

cool man

anyone know how it governs the engine at the 3800 rpm ?

[ryanv70c10]

Originally Posted by b454rat

Believe 502 is standard deck and 572 is tall....

GM made a tall deck 427 for the trucks