1974 GMC revival with 6.2L Diesel

[@oldchevy4x4]

Making me want another truck buddy... I miss my 6.2. Thumb's up!

[@1997cr80r]

Hey Matt I've got a couple things to mention. First is the cold timing advance hooked up at working on the pump? If it is i would try advancing the pump a smidgen this will help with or completly cure all the cold start smoke assuming all your glow plugs are functional. Just going on a limb on that 6.5 I'd be amazed if it actually hydrolocked going down the road you'd need more than a blown head gasket to get that much coolant into a cylinder that fast I'm kinda leaning towards the crank just randomly broke and jammed up tight momentarily or something goofy like that happened but I could be wrong I wasn't around to witness it like you did. I would invest in a fluiddamper for these things so the broken crankshaft likely won't be something you see ever again too the old failing hardened rubber factory dampers are what have been said to cause crankshaft failure on these as the way these are made the factory damper wasn't really sufficient when they were new. Happy to see it back up and running! I've still got one 6.2 truck being my 85 c30 lost its 6.2 to a 354T perkins swap but the 6.2 I have is in my service truck its a NA cucv 6.2 I swapped in place of a worn tf out 292 in a 86 gmc c3500. Ofcourse shortly after the swap the old dried up head gaskets let go so I put a fresh set in with studs too its probably the only NA 6.2 out there studded haha but it's been great. Put 60G glow plugs in it built my own glow plug harness and wired them to a garden tractor starter solinoid that's controlled by a button on the dash. I left the CUCV dual alternators and wired them to 12v it's a beast of a jump starting machine. 4.56 gears with a sm465 she definitely doesn't go anywhere fast. I've got the last advance adapters ranger box overdrive unit they made sitting in my office maybe one day I'll put it in there