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Upgrades before the new plant goes in...

scottystills

scottystills

1/2 ton status
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Well the 93 K2500 is torn to pieces and probably crushed ready for recycling by now. The mech IP 6.5 is sitting in the garage and just waiting to get it's moment in the spotlight. Here's my to do list, but want a double check to make sure I don't miss anything!

Gaskets- intake, valve cover, oil pan, mains, heads
Head studs
Main studs/girdle
Oil pump
Thermostat (add dual?)
Swap PSC pump over
New glows

Have 6.5 marine injectors in the 6.2 right now that I'll be swapping over with my less corroded injector lines.

When I pull the heads going to check the cyls, worst case if they're bad it'll find itself a .020 bore and some new pistons. The engine has around 400k km on it, so I'm expecting a few issues. Will definitely be checking the valvetrain and crank carefully.

Haven't looked carefully yet, but are there upgraded cams for these old beasts? Is it worth removing and replacing the cam bearings without changing cams?

Engine currently has AC which I'm going to be getting rid of (compressor will make a good backup for buddy's). I assume there's an idler I can put in place?

What am I missing? Or like always, am I just waiting to rip it apart and find its surprises?
 
I'd dis-assemble and check for cracking on the heads, and more importantly the main web area at the bottom end. Might be OK, and if so a stud girdle for sure and ARP studs. With that kind of mileage I think you'd be best to just rebuild it if you don't find any major cracks anywhere.

I see the old 6.2 has a turbo. Even more reason to do a rebuild on the 6.5, and consider adding some 18:1 pistons.
 
Pretty much why it's going in, the more generic turbo setup. It's got the GM3 on there right now, but I'll probably look at an HX35/40 down the road. Thinking I might put in the thicker head gasket and run more boost.

If it's cracked I'll just rebuild my 6.2 short block and swap the top end over. As long as the heads are ok of course.
 
Where can you find reasonably priced 18 to 1 pistons?
 
So the 6.5 is a bust, block anyway. Pretty bad cracks in the webbing. I've decided to switch the heads onto my 6.2 block and run the GM3 turbo. Lots of work to do in the meantime though. I'm going to start stripping my 6.2 this weekend. Before anything goes back in I'll be using the extra room to mount new pedals, put in the NV4500 and get the hydraulic clutch set up, delete the AC condenser, etc.

Question some of you guys will probably know... So I have the 93 NV4500 to run, and I'm currently using a fig8 chev NP205. AA has an adapter for it but it's crazy expensive (especially with the exchange right now). Would a pass drop round mount 78 Dodge NP205 mount behind the trans? I don't see an adapter anywhere, but thought some of you guys might know from experience.
 
scottystills said:
So the 6.5 is a bust, block anyway. Pretty bad cracks in the webbing. I've decided to switch the heads onto my 6.2 block and run the GM3 turbo. Lots of work to do in the meantime though. I'm going to start stripping my 6.2 this weekend. Before anything goes back in I'll be using the extra room to mount new pedals, put in the NV4500 and get the hydraulic clutch set up, delete the AC condenser, etc.

Question some of you guys will probably know... So I have the 93 NV4500 to run, and I'm currently using a fig8 chev NP205. AA has an adapter for it but it's crazy expensive (especially with the exchange right now). Would a pass drop round mount 78 Dodge NP205 mount behind the trans? I don't see an adapter anywhere, but thought some of you guys might know from experience.
Click to expand...

I have no experience here, but I think the Dodge cases use a different input shaft. 29-spline, IIRC. Not sure if the bolt pattern will work either.

If you're into sourcing a new case, why not simply grab a newer GM case?
 
NV4500 is a 32 spline output, round housing. An NP208 would work but looking to stick with a 205. The Dodge is a round housing 23 spline.
 
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