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A sluggish, stuck, and knocking motor Mud Bog day

mountainexplorer

1/2 ton status
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Spokane, Wa./Ione, Wa
We went out to the Harrington, Wa. Mud Bogs today.

It was my first tow with the new 6.2 Diesel '83 K30. Now, had I known how sluggish and lacking in power 6.2 diesel motors really were, I may not have gotten it. Sure, I got twice as good mileage as my Crew Cab 454... but... Wow. No Power. Gutless. And I complained about the 454 in the crew cab being gutless... but now that I look at it, I can't say that anymore.
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So, the '84 red/white Blazer I traded for the K30 (mepr's old K5) goes out with us. Dillon (mepr), one of our voluntary pit crew, kinda regretted getting rid of it now seeing it with 3/4 ton axles, a 454, TH400/205 and 6" lift.

Jimmy went with in his '79 K20 with 35's and a rear Detroit, 454/TH350/205.

Travis brought his '84 K5 with a 400+HP 454, 4.88 gears, 700R4/208, on my 36" Hummer tires.

Buckwheat brought his '68 Dodge Shortbed on 36's, 360, Dana 60's, 4.56s, locked in the rear.

Tony was there earlier with his '65 Chevy truck, 396, TH350/205, 4.10s, on 35" Boggers

I ran the '82 Stepside Shortbed, with a 396, SM465/205, Dana 60/14-bolt, Detroits, 4.10s and 35x15.50s in the rear and 36x12.50 Swampers up front.

First rigs to run before our class all got stuck. Jimmy and I got lined up together, and I broke through the furthest run in my lane to over 100ft. It was so thick I ran 4-low and 2nd gear and held it at 6 grand. After my run came Buckwheat and Tony... and Buckwheat stayed in my ruts and broke through to about 135ft. The next truck through was then able to make a full pass.

My 2nd run in the other lane (4-hi and 2nd gear) was a full run, but I still got sucked into a hole at the finish line and got stuck again! So much for being locked front and rear... 2 runs, 2 stucks. Jimmy pulled through the other lane as I sat angled into the hole in my lane.

My 3rd run, there was a rut system and I ran an 8.22 second full run. Kind of pathetic for a built 396 locked front and rear. But at least I made it one of three runs. Of all 5 rigs in our group that came together, we all got stuck two of our runs and made one full run without getting pulled out.

I decided to make a few runs for fun after the races were over... and after 4 runs I hear a noise. Rod bearing are now toast in the Stepside... a 396 with less than 2500 miles on it. Onto the trailer it went, and away we went home... sluggishly behind my Diesel truck.
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I have made the decision that the stepside and the 6.2 diesel truck will both get sold eventually. I have too much into both of them to justify adding them to "the Fleet". I miss the days when gas was cheaper, and I used the Crew Cab and took the Truck Blazer places. Today I just felt like I neglected my true "kids" and tried replacing them with "adopted" vehicles I added to the fleet this year.
 
Nothing wrong with a 6.2, but it's not a tow rig IMO...not without a turbo and a few other upgrades. Mine does fine hauling itself around, certainly no worse than my old 355, but I wouldn't ever consider it a great towing platform.


Rene
 
Is this the same motor that got a tear down in the dust at a comp?

I'm sure the diesel addicts will chime in and tell you to drive a "J" code 6.2 before you call them gutless.

Rene, that is your cue. :D :pimp1: :deal:

*Edit*


:haha: :rotfl:

anybody want their palm read? 50 bucks each.
 
Last edited:
Is this the same motor that got a tear down in the dust at a comp?

No, that was a 454 that lasted a week before rod bearings went out.

This is a 396 that came in the stepside when I bought it, and supposedly had under 2000 miles on a professional rebuild. But I didn't get receipts... though I was able to tell it wasn't some pieced together motor. It ran out great until this, though the cam in it is a bit big (kicks in around 2700rpm and above).

I do like the fact that the 6.2 Diesel used half the fuel of what I'm used to. But I see now that heavy towing isn't a good thing to do with that truck.

This next weekend I'm supposed to be at a mud Bog in north Idaho with the stepside towed by the diesel. So much for that idea.

Maybe I'm just dissapointed with both trucks at the moment.
 
Yeah I absolutely love my 6.2 in my Blazer but I wouldn't consider that engine for towing duties at all without a turbo.

There are a few tricks you can do to your 6.2 to squeeze some more juice out of it but it's always going to be slow. With a 6.2 youll get there... you may be dead last but youll get there eventually.


Man it seems like you have some really crummy luck with engines not holding together.
 
dirtwarrior17 said:
Is this the same motor that got a tear down in the dust at a comp?

I'm sure the diesel addicts will chime in and tell you to drive a "J" code 6.2 before you call them gutless.

Rene, that is your cue. :D :pimp1: :deal:

*Edit*


:haha: :rotfl:

anybody want their palm read? 50 bucks each.

Why would I tell Allan to try a 'J' code? He already has one...:rolleyes:

My prediction is that you're gonna recomend a killer small block that makes 500 hp, passes smog, is cheap to build and still gets better than stock mileage...:surepal:

Rene
 
'C' code is 1/2 ton and has an EGR intake which is somewhat restrictive.

'J' code is 3/4 and one ton and has an open intake without an EGR...makes a little more power. Your one ton would be a 'J' code.

Rene
 
tRustyK5 said:
My prediction is that you're gonna recomend a killer small block that makes 500 hp, passes smog, is cheap to build and still gets better than stock mileage...:surepal:

Rene

You took the words right out of my mouth. :waytogo:
 
6.2 not a towmotor....

I don't think I'd use my 82 K20 with a 6.2 to tow a big heavy trailer myself..probably wouldn't be any better than my 305 in my 79 C10 as far as power,though the fuel milegae would be a lot greater in the diesel..the 6.2 just isn't a powerhouse for towing..at least not in stock form anyway.

My brother had a 1992 GMC K2500 that had a 6.5 Turbo diesel and the NV4500 tranny--that truck did very well towing,until you hit the mountains in NH on the way to the raceway...then you'd be downshifting and going 55-60 tops uphill!..I can only imagine if I tried using my 6.2 on the same trip,with the same load!--I'd have to leave a day early!.. :doah:

He recently sold that truck,and bought a 2002 GMC with the extended cab,and a shortbed--it has the Duramax diesel...and wow,what a difference!--even in stock form,no "chips" or other add ons,he towed the same car and trailer to the races a few weeks ago--he said on all the hills that his other truck would bog down on,he'd look down at the speedometer,and he was going 75+ :eek1: --and he said it doesn't even feel like your going that fast,nor does the motor show ANY sign of strain!... :laugh:

It has the Allison tranny too...I drove it about 2 weeks ago--VERY impressive torque and acceleration--its a whole different animal than the anemic 6.2-6.5 diesel,that for sure!--and he claims it gets BETTER fuel mileage than his other truck to boot!..If your towing,the Duramax is the GM engine of choice!--(Unless you get a 502 gas motor,and pay for the lower gas mileage)..

Too bad it will probably be 10+ years before I'll be able to afford one!--he paid 22 grand for his 2002!!..A house will be my first priority,THEN a nice truck.. :rolleyes:
 
tRustyK5 said:
Why would I tell Allan to try a 'J' code? He already has one...:rolleyes:

My prediction is that you're gonna recomend a killer small block that makes 500 hp, passes smog, is cheap to build and still gets better than stock mileage...:surepal:

Rene


damn... what ever happened to the sense of humor... i see you got the exagerating part down... :D :waytogo: :whistle:
 
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