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I'll look into King bearings. No crack in the block, so I ordered a set of Clearwater heads. I might go with Flepro for the gaskets and bolts, but does anyone have any strong opinions? What about Mahle gaskets? The block has most likely not been resurfaced. In the absence of absolute certainty...

I rolled out the mains and am wondering if anyone has recommendations for rod and main bearings. I'm not looking for the cheapest option. Also, since I don't know the 6.5 production history, I'll ask about my heads. I have the International Optimizer block dated 2003. Was International making...

That's good news - I had no idea. The date stamp is 07 30 K

Thanks for the info, MrMarty!

I'll talk to my local auto machinist about that. On another note, can anyone confirm that I have an Optimizer block? A double diamond is cast into the valley:

I got the pistons out. All the upper bearings show copper like the one in the photo. I also have a few nicks on the crank - I know I did two of them. Am I looking at getting the crank polished, or can I gently smooth them out? I don't intend to keep my rig forever and don't use it much or really...

Thanks for the tip!

The engine is out and coming apart. Please watch this video and tell me whether this kind of rocker arm movement is normal. Does the amount of play vary from one to the next because of whatever position the cam lobes happen to be in? https://ln5.sync.com/dl/b44f4c100/i7...25675548950005

Thanks for all the advice! Very helpful. I'll get the heads and oil pan off and look around.

Hi, all. I've got combustion gases in my coolant, so I'm pulling the engine (in my sig) to replace the gaskets and get the heads checked. This stock engine has about 260k miles on it - a GM-installed replacement after the factory engine blew at 90k. I'm the third owner and would be surprised if...

Thanks for the input. My memory is hazy.

I don't mean the retaining clip, BTW

It's the switch. I jumpered the orange and white at the switch connector and got brake lights back. I have a vague recollection from years ago, when I replaced the switch before, of losing a really thin metal bushing that slips over the post where the switch sits before you put the switch on...

I should have said that the previous owner wired in a TAP Brake Master for towing. I don't know anything about that system.

Hi, all. The brake lights on my '97 stopped working, but all the other lights work. Before I condemn the switch at the brake pedal, I'd like to check for power out of it at the relay terminals. There's no brake relay in the fuse/relay box under the hood (driver's side), and no female terminals...

Thanks for the help, and sorry for the delay - I got swamped with other stuff. I should've checked for codes before I disconnected the batteries to check if they could hold a charge and pass a load test individually. I'm going after the glow plugs as soon as I have a chance.

Hi, all. Apologies if this has been covered but my thread search didn't catch it. The 6.5 in my sig has had intermittent trouble starting lately. Today I cranked it several times with no luck. In the 80's outside, good battery voltage, cranking fast enough, could hear the lift pump running while...

Thanks, folks!

Hi, all. I recently replaced my hydroboost and am wondering if I lost a bushing that I thought goes over the pedal mounting post and through the switch. I could have sworn there was a bushing there when I replaced the switch awhile ago. Anyway, the switch feels loose on the pedal post, and I...