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There are some complete engine sets on E bay One set dose not look right and they want $25 for shipping another set the shipping is free . The right sales person should be able to help you don't tell them it's military just 302 GMC

Just maybe the air from the air pack flowed back to the master cylinder and up the vent to the central vent right by the old air filter . this one vent is tied to every thing check your master cylinder to see if air is bleeding in to it ? years back I over filled the gas tank on my GMC...

Pulled the LDSa1 out of the truck today I need to reroute the fuel line air line and replace the brake line on top of the third member .

I could use some pictures of a mack 673 in a truck I have never seen one .I know the top frame rail cut but I'm not sure how much is gone or how long the cut is . also any pictures of the front of the engine in the frame and how much space between the fan and the radiator ? thank you

I was lucky to find used lumber to use on my m269 wrecker lowboy some came from a old bridge it was thicker so I used it on the out side's where the tires of a hauled truck would be the other would I come across I used in the center . I used 1/4 self tapping screws a # 1 drill bit works...

Maybe this helps

I would Check the wheel cylinder for leaks repack bearings new seals if the wear ring is grooved replace it . then back together

I have had gear oil from the rear end leak in to the bearings and have it look like that . I have been using a tan colored wheel bearing grease from Napa . when it leaks in to the bearing it starts washing off the wheel bearing grease . I could be wrong but the bearing looks to clean to be...

The pictures are great . if the brake pad is loose you need to replace the shoes because they will come apart .

My mount looks like it's 5 1/2 I could be wrong it's hard to see looking at it the angle .the bottom bolt looks to be centered at 3/4 inch from bottom of the plate . one of the pictures shows where the spring mounts for the master cylinder .and how far the drive line should be from the...

Centered the bell housing and drilled new dowel pin holes .

I think they came on early wreckers I had to get one from Memphis that was rebuilt .

Nice . rear winches are good to have when needed .

What will you power with it ?

I used linseed oil mixed with turpentine , the turpentine help carry the linseed oil in to the wood .

I looked at using Ld pistons in my LDS and found the LD piston has ports on the bottom of the piston that lead to the oil ring and the LDS piston has two ports that lead to the oil ring and two larger ports that lead to a cavity in the top of the piston .

I pulled the oil pan on my ENDT 673 E I don't know what oil was used in this engine but it was very clean ( Rotella clean ) I pull a main and a rod cap both had bearings dated 8-98 they looked real good the crank looked very good . I noticed that this engine has no piston oilers .

any up dates on this ?

I pulled the fly wheel and bell housing off of the Mack ENDT 673 E today I noticed that the military bell housing holds the seal for the crank on the civilian engine it has a housing that holds the seal . I have to pull the pan next and check the main and rod bearings .

I checked on pistons and liners for both engines and they where about the same . the LDS pistons have less rings then the old ones so maybe they have less compression = less power .maybe the military wanted this because the 5 ton LDS engine when rebuilt it would go back in a m35 and not a 5 ton...