Hi. This is my '83 C-10 6.2

[Altec]

You should remove that EGR web in the middle of your intake manifold.  It'll give you a few more horses.  The higher horsepower J code engines had intake manifolds without this web.  You can also plug up that EGR hole as well.  Once you get those mandrel bent pipes installed, the next step will be to turn up the pump to unleash the hidden power of this engine.

You have the right idea, but you forget my being at high elevation. In this thin air, I'm not having ANY restriction from keeping the EGR, and the EGR doesn't hurt anything else, so it stays. Likewise with the fuel. I'm already having black smoke at WOT, so adding more fuel won't help. What I need is less fuel.

More air is what you really need. If your driving high up, why not try to find a 6.5 to strip the turbo off? You would be one of a select few that use a turbo for its main purpose. Altitude compensation. 


And the air pressure isn't going to negate the advantages of a better flowing intake setup. More CFM's is always better. Even if it isn't forced induction.

Nice truck! Good to see more diesels! I drive a Cummin's, and am working on putting a 6.5 NA in my K10 (I have a lead on a HO 5.9, but I'm not holding my breath...)

[Captkaos]

you should be able to get the trans sleeve from GM.

[trillionmiler]

Good morning everyone. Well, morning for me, at least.
 I do want to grab the turbo stuff off the next 6.5 to arrive at Pick-N-Pull. I want to do back-to-back comparisons to see if a turbo really can help MPG. Everyone says so, but noone proves it.
 I really want the Cummins, ideally a hybrid with the 24-valve head, but NO electronics. But I also want a dually axle, and the T56 from the Ram SRT/10. Rockland Standard Gear can modify the T56 to hold 1,000 ft-lbs, and I'm hoping to have  2/3 of that, at best.
 I'm not about to buy a sleeve when I know I have a good one.
 Some smoke at full throttle is good, but not as much as I saw in the mirrors. Maybe these better mufflers will do some scavenging.
 

[Edahall]

Good morning everyone. Well, morning for me, at least.
 I do want to grab the turbo stuff off the next 6.5 to arrive at Pick-N-Pull. I want to do back-to-back comparisons to see if a turbo really can help MPG. Everyone says so, but noone proves it.
 I really want the Cummins, ideally a hybrid with the 24-valve head, but NO electronics. But I also want a dually axle, and the T56 from the Ram SRT/10. Rockland Standard Gear can modify the T56 to hold 1,000 ft-lbs, and I'm hoping to have  2/3 of that, at best.
 I'm not about to buy a sleeve when I know I have a good one.
 Some smoke at full throttle is good, but not as much as I saw in the mirrors. Maybe these better mufflers will do some scavenging.
 

The 6.2 does respond quite nicely to a turbo but solo MPG's usually goes down.  This is especially true with the 6.5 turbo setup and less so with the Banks setup.  Another thing to consider is the additional stress to the bottom end of the engine block.  It's not uncommon for these engines to have the bottom end fall out of the bottom of the engine when pushed too far.  In all, these engines were designed to provide excellent fuel economy in a light truck and when used this way, it works very well and is reliable.

[trillionmiler]

Yesterday morning I found my speedo sleeves, so that's done, and the driveshaft is back in. Now to finish the exhaust. On Sept. 4, I'll be dropping the intake manifold off at the machine shop to be vatted clean. I already have a new set of FelPro intake manifold gaskets.
 It needs new valve seals, but I'm gonna try to get it running anyway.

[trillionmiler]

Finally got the intake manifold to the machine shop, to be "vatted" overnight.
 Also, I found a dually axle for $167 with drums.

[trillionmiler]

Good progress: The intake manifold is on, the ATF cooler lines are re-connected to the trans, the converter bolts are in and tight, the trans is full of ATF, the airdam is half bolted on, The fuel filter bracket is bolted to the intake manifold, the EGR gasket is ordered, the CB radio is installed. All that just today. Plus I bought a gallon of Rain-X De-Icing windshield washer fluid, and 2 gallons of antifreeze for the radiator.
 I can't find the gasket for the vacuum pump, not even from   truck or RockAuto, let alone AutoZone and O'Reilleys.
I got the bright idea to try the one off a HEI distributor, but it proved to be undersized. I have a FelPro gasket catalog, but it's only for the performance-oriented stuff.
 I'm still trying to find where the shift linkage ended up, but if all else fails I have a '91 Camaro shifter I can use, since it and the truck both came with 700R-4.
 Still have to finish the exhaust, and get the turn signals sorted out, plus there's an issue with one cap on the rear-most u-joint, and I'm missing a fuel filler cap.
 Even so, the only thing stopping me from firing the engine is the vac pump gasket.
 I've also misplaced 2 gallons of fresh Rotella T 15W40.
 

[trillionmiler]

I made a gasket for the vacuum pump, got that installed, then installed the modified EGR. Had to trim the gasket to match, but it's progress. This truck will move under it's own power again, this year.

[trillionmiler]

This project seems never-ending, but I keep making progress.  Today I got the PCV system re-installed.
 I also tightened every hose clamp I could find, and a few other minor but necessary details.
 I also found the missing bits for connecting the B&M trans temp gauge.
 Next week is getting that exhaust headpipe flared, and finishing the exhaust system.
 Over the winter, my heater box housing has cracked, so I'll be showing replacement when I get it.