Can I efficiently rebuild an internal combustion engine?

[1993-Sierra-Z71]

Tapa won't let me upload a photo of my workbench I guess. Anyway, I measured the bores today, and it is .060 over. None seem to be badly tapered, so I think I can dingle ball them. Did some digging on the engine codes, and it is:

9790071 - 1968 400
K167 - Cast November 16, '67
Code XM - GTO, Auto or Manual
Engine sequence - 254893

The sequence number replaced what would of been the last digits of the VIN which was stopped in '67 model year cars. By the day this was cast in '67 it seems like they moved on from that.

Next I need to measure all pistons, and figure out the clearance. Then measure the crank, I already know that's .010 under, as marked on the rod bearings. Then the rod bearings clearances, and mains. I'm measuring with the old bearings first to see how bad or good it was because I'm nosy. At that point I will fully disassemble the block (freeze plugs, oil galley plugs, dowl pins, ect) and plan my attack on the potential machine work.

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[1993-Sierra-Z71]

Please note some numbers are a bit off due to not being 100% center in bore.

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[Supercharged111]

Or. . . you could just send it.

 

[1993-Sierra-Z71]

Or. . . you could just send it.

That may be how you learn to procreate, but not engine building.

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[1993-Sierra-Z71]

If that isn't signature quote worthy, I don't know what is.

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[Supercharged111]

That may be how you learn to procreate, but not engine building.

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Well what's the goal here? To build an engine just because or make your truck more better?

 

[1993-Sierra-Z71]

Well what's the goal here? To build an engine just because or make your truck more better?

To learn how to rebuild an engine, and do it semi right. Like checking tolerances and what it ends up in, either my truck or ? Maybe I'll gone another rotted out G-Body??

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[Supercharged111]

To learn how to rebuild an engine, and do it semi right. Like checking tolerances and what it ends up in, either my truck or ? Maybe I'll gone another rotted out G-Body??

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I've done a couple, sure I'll do more. I think it's more fun to roll the dice on old used crap than to do it right. Or to just make a mish mash out of an engine, had excellent results with my "too ghetto to fail" 5.0 Ford I did back in 2012. I also slapped forged pistons and rods into a 4 cylinder that I proceeded to boost around the same time without so much as honing, though admittedly I had a fresh short block waiting in the wings for that one. Still ran pretty damn good.

 

[1993-Sierra-Z71]

I've done a couple, sure I'll do more. I think it's more fun to roll the dice on old used crap than to do it right. Or to just make a mish mash out of an engine, had excellent results with my "too ghetto to fail" 5.0 Ford I did back in 2012. I also slapped forged pistons and rods into a 4 cylinder that I proceeded to boost around the same time without so much as honing, though admittedly I had a fresh short block waiting in the wings for that one. Still ran pretty damn good.

If I'm going to spend time doing it, I'm going to make sure it's right. But that's just me.

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[Supercharged111]

At this point I'm a glutton for punishment. I have no qualms hucking a junk motor in just to see what happens.