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Old 02-11-2017, 02:20 AM   #1
Electricduane
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Join Date: Mar 2013
Location: Sacramento CA
Posts: 107
Bedliner on my 89

More pics to come tomorrow. Interior / trunk was also sprayed.
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Old 02-11-2017, 09:13 AM   #2
Edahall
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Location: Goliad, TX
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Re: Bedliner on my 89

Green handle pump also indicates diesel. What do you got under the hood?
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1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive - HX35 Holset Turbo
-NP205 iron transfer case
-3.73 gears -2" Lift
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Old 02-11-2017, 09:51 AM   #3
Electricduane
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Re: Bedliner on my 89

6.2 diesel. Slow but close to 20 MPG. Very fun vehicle!

I see you have a 5.9 cummins...I was going to do that until I worked out the cost . . Still might do it someday. Great engine! You have an awesome setup.
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Old 02-12-2017, 09:40 AM   #4
Edahall
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Re: Bedliner on my 89

I've had 6.2L diesels as well. Have you done anything to help out the performance? If not, they do respond quite nicely to a free flowing exhaust system and turning up the pump.

Surprised you're only getting close to 20 mpg but it is probably due to the non overdrive TH400 tranny, 3/4 ton 4x4 suspension (if that is what you've got). I was getting upper 20's in a 2 wheel drive 1/2 ton Suburban. The 6.2's were designed for excellent fuel economy. My Cummins is not quite as good but very close but it's in a lifted 3/4 ton 4x4 so it's like comparing apples to oranges.

I like the Cummins setup and highly recommend it. Best way to do it is find the whole truck and swap things over.
__________________
1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive - HX35 Holset Turbo
-NP205 iron transfer case
-3.73 gears -2" Lift

Last edited by Edahall; 02-12-2017 at 10:01 AM.
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Old 02-13-2017, 12:54 PM   #5
Electricduane
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Join Date: Mar 2013
Location: Sacramento CA
Posts: 107
Re: Bedliner on my 89

only thing I have really done is put in a K&N filter, I could tell a difference when climbing hills. Have not yet messed with turning up the pump.

Mine is also 3/4 ton, 4x4, 4" lift, TH400. I probably would not have put the lift on, but the previous owner did I left it on there. Tires are 315s.

Someday I may do the Cummins swap. Having just bought the engine once before, I see that what you said about buying the whole truck makes sense. are you running a Dodge transmission?

Alternatively, I may just put in a 4L80e transmission and find a good used or remanufactured 6.5 diesel. Not nearly as good as a Cummins, but a lot less complicated.
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Old 02-14-2017, 12:44 AM   #6
Edahall
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Re: Bedliner on my 89

The transmission is out of a 2001 Dodge. It was only offered on 24 valve Cummins so it had to be purchased separately.

Not much reason to go to a 6.5 unless your 6.2 is worn out. There is hardly any difference in power unless turbocharged. The bottom ends were very susceptible to cracking around the webs and it's actually very difficult to find a crack free block.
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Old 02-14-2017, 01:54 PM   #7
Electricduane
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Re: Bedliner on my 89

So for a cummins conversion, you essentially put an entire dodge driveline (engine, trans, transfer case) into the chevy?

In addition to that, you need the aftermarket motor mounts that cost about $1k?

Is that about right? All the parts (no labor), cost is about $6-7k, assuming you find a good motor for about $3000?
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Old 02-15-2017, 12:06 AM   #8
Edahall
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Re: Bedliner on my 89

Quote:
Originally Posted by Electricduane View Post
So for a cummins conversion, you essentially put an entire dodge driveline (engine, trans, transfer case) into the chevy?
Yes but that would only be true if you can find an 88-93 Dodge 4x4 truck with the Cummins motor. The newer ones 94 and newer had transfer cases with drivers side drop.


Quote:
Originally Posted by Electricduane View Post
In addition to that, you need the aftermarket motor mounts that cost about $1k?
I welded the stock Cummins motor mounts onto my Chevy frame.

Quote:
Originally Posted by Electricduane View Post
Is that about right? All the parts (no labor), cost is about $6-7k, assuming you find a good motor for about $3000?
That's about the average most people spend for parts for this conversion. Of course you can spend a lot more than that or possibly about half of that if you plan carefully.
__________________
1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive - HX35 Holset Turbo
-NP205 iron transfer case
-3.73 gears -2" Lift
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