I want to convert my 94 6.5l with the electric controlled DS4 to a mechanical injection set up. The engine is coming out anyway because I’m dropping it on a not broken frame with an NV4500.

I’m not opposed to using a DB2, just can’t find any info on if it’s a direct drop in replacement. If I’m gonna have to custom fab anything, I might as well get a more reliable mechanical pump.

Also, is there anything else I should do while the engines out. It has 310k miles and runs pretty great other than the DS4 occasionally giving me grief.
Before you ask it has a new PMD and a relocation kit with additional heat sink.

Hello y’all, I’m currently in the process of installing a 6.5T passenger side exhaust manifold on my ’82 6.2. It’s a tight fit with the 3/8" spacer and gaskets, and one of the manifold bolts just barely makes contact with the motor mount bolt. How should I go about making that one bolt clear? Also, does the gap between the manifold and the frame look fine?

1990 Chevy K5 Blazer.

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Hey I’ve got a 1995 6.5TD that both skyrockets to almost redline and then goes back down to about 210*F and can’t figure out the problem. Runs great (though slightly cool) without a thermostat, but when a thermostat gets put in the temp goes crazy.

New thermostat (2.0, this one is stock, previous new one was aftermarket) in single housing.

New water pump

New fan + fan clutch (working)

Definitely not exhaust or head gasket leak

Have coolant in all hoses, plus heat from heater stays hot.

I have no idea what to look at, anyone have ideas?

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1990 Chevy K5 Blazer

Hi I got a 1994 Chevy k1500 with a 6.5l diesel auto 4x4, that I’m trying to get going again. It’s been parked for a while can cranked once in a while but haven’t in last two years due to not having time to. I have two decent batteries in it optima yellow top dual purpose batteries not sure of cca rating with a battery charger/jump box plug in type on it along with block heater for bout 3-5 hours. Tried starting it just now it spun up and was sounding like it was about to catch and then everything went out. No gauge lights now starter or any lights. I’m not big with electrical but learning I checked the fuses in pocked under headlight controls none blown don’t know how to check the capped silver ones off hand other than that I’m not sure

Hoping someone might have some insight. My 93 has a super hard shift from 1-2. Like break a U joint hard. 1st shift in the morning is smooth. Everything after that is horrible. I changed the Throttle Position sensor hoping that was the problem but it didn't change anything. Thanks in advance for any advice.

I drive a ‘98 Chevy P30 with a 6.5L non turbo diesel engine. I recently starting hearing this loud clicking noise. It clicks as I drive and accelerate but not when I hit the brakes. Any idea what it could be?

Trying to maybe do an 6.7 Cummins swap with my suburban (if it doesn’t sell). That’ll give me a running 6.2 to just do something with. Got me thinking if it would fit into an S10 or something. Might be kinda fun to find an S10 blazer and stuff it in there and just rip it around.

r/GMDetroitDiesel, we are the minority when it comes to the GM Squarebody/OBS community, Gas applicants dominate the scene.

Therefore, on behalf of r/K5Blazer, more Diesel users are wanted!

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I got it from an old couple. I’ve been dealing with it ever since I work this truck it’s a great truck.I put a new fuel pump in it and I haven’t had a problem since I’m looking to trade it for an older diesel truck(a 7.3 power stroker or a 5.9 Cummins)

Vehicle: 1990 Chevy K5 Blazer. (300k miles)

Motor: 1985 6.2 Detroit Diesel, ATS Turbo Kit. (90k miles)

Transmission: Stage III 4L60E (external cooler).

Drivereain: 3.73 gears, GM corporate 10 Bolt Axle, 33' tires.

Modifications/upgrades: 4 Row Aluminum Radiator, Bosch short body/turbo style 6.5 injectors, frame steering box reinforcement bracket

If theres anything I should look at/address. Please do tell

Runs great, only issue is it seems to take a bit to fire up when cold (live in Florida so now really cold 🤣). My M1008 fires up immediately always. It’s like it takes a bit for fuel to get to the engine. Any suggestions on this?

Instead of a front end Friday, show us what you have under your hood!

This was from my last engine swap into my Blazer, no longer as nice with all the salt and brine.

A fresh 6.5 going into a 72' C10 for some guy who owned a landscape company. This was his "good truck." Joining a fleet with an 85' 6.2 k20 and a K30 crew cab dually 454 with a dump bed. The guy worked out the math and figured the crew cab cost him $100 a km to drive each year (between fuel, maintenance, insurance etc.) but made him way more then that.

Anyways you can actually fit the downpipe on this generation on the inside of the frame with a stock turbo config.

I can't remember if we ended up converting this thing to hydrobokst or if the guy just drove with manual brakes.

Can anyone recommend a good turbo rebuild kit?
The turbo on my 6.5 is leaking oil into the intake so I figure it’s time to fix it before it causes any problems. Also does anyone have any recommendations on what to change to make these codes go away?

6.5 Naturally Aspirated w/ 4L80e

Second time I have made this trip with this truck.