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Top speed

ken

Active member
Steel Soldiers Supporter
2,479
25
38
Location
Houston Texas
I hit 38 once. But it is no fault of the truck. It's the windy back dirt roads that limit speed.
 

infidel got me

Well-known member
1,679
32
48
Location
Newberry, Florida
Speeds of 60 to 65 are fine with me. If I need to get there faster I'll leave earlier. The screaming engine and high rpm's are what my concerns were..

This is the main reason for a 4 speed auto. swap.
 

JoeJrTheBarber

New member
268
20
0
Location
Chicago, IL
73 on my GPS speedo app on my phone.
1988 M998 with 6.5 non turbo and 3 speed on 37's.
Truck was not happy for sure.
Normal tollway speed around 65ish..
 

Bulldogger

Well-known member
Steel Soldiers Supporter
1,328
585
113
Location
Quantico VA
I think I hit 67MPH once, but I drive 60-62 on highway. Right lane and left hand ready to flip on flashers. She ain't a speed queen fer sher.

But as many Jeepers say, "Sure yours can go faster, but mine can go ANYWHERE"

BDGR
 

Lionel

Member
Steel Soldiers Supporter
498
24
18
Location
Baltimore/ MD
I did get up to 80 once in one of my A2's. It was only for a short duration and the truck did not protest, but the rotating mass of tires and runflats could have definitely benefited from a set of Centramatics. I'm with everyone else though, much more fun and so much safer to move a "profiling" speeds and enjoy all the looks, especially from the kids.
 

Crazyguyla

Active member
817
124
43
Location
Altus, OK
Top Speed Military 2 seat, no cargo 1990 M998: possibly 85-95mph, speedometer needle was bottom center of the dial

Top Speed 2001 H1, 6.5 Turbo: 110 mph
 

kdaniels

Member
194
18
18
Location
Dothan, Al
I rolled on to I-10 and ran 60 mph for 180 miles non stop heading over to the USS Alabama for a truck rally a few years back. My 6.2 / 3 speed seems to run well at that speed as I had zero issues there and back. But for non interstate travel 50-55 mph is all it sees.


Semper Fi !

keith
 

NormB

Well-known member
1,220
72
48
Location
Cloverly,MD
I rolled on to I-10 and ran 60 mph for 180 miles non stop heading over to the USS Alabama for a truck rally a few years back. My 6.2 / 3 speed seems to run well at that speed as I had zero issues there and back. But for non interstate travel 50-55 mph is all it sees.

Semper Fi !

keith
Was that with or without the “cruise control??

NB
 

Karl kostman

Well-known member
Steel Soldiers Supporter
2,305
889
113
Location
Fargo ND
I dont know to much about these vehicles but I was just N of mpls about 40 miles with a large trailer load of 5 ton tires and I got passed by one of these units, it was from a national guard unit and was still an IN service unit with the driver in full BDU uniform, I was running just under 70 mph and he passed us and I would guess he had to be close to 80 mph, he sure was not in sight for to long after he went by me!
Karl
 

Mfal

New member
1
0
1
Location
Arizona
How much more juice / speed do you get by tacking on a turbo to the 6.2? Also, currently have 3 speed (1987). Any recommendations on transmission upgrades?
 

98G

Former SSG
Steel Soldiers Supporter
6,066
4,418
113
Location
AZ/KS/MO/OK/NM/NE, varies by the day...
How much more juice / speed do you get by tacking on a turbo to the 6.2? Also, currently have 3 speed (1987). Any recommendations on transmission upgrades?
The limiting factor is gearing . With the 3 speed you can run it a little over 60mph, but it isn't happy and won't live long. 53-55mph is the sweet spot.

Adding a turbo won't help this. Power isn't the choke point.

If a higher top speed is desired, a transmission swap is in order, and isn't trivial. If you need the extra gear it's best to start with a truck that already has it.

Mine is a 6.2 with 3 speed. I have learned to like the right lane.....
 

Attachments

TOBASH

Father, Surgeon, Cantankerous Grouch
Steel Soldiers Supporter
Supporting Vendor
3,569
3,474
113
Location
Brooklyn, NY
I swapped in a 700R4 transmission that I had specially rebuilt. It was eye-opening. Suddenly I could cruise at highway speed.

Three speed transmission is great for a farm or rock crawling, however a four-speed transmission or a five speed transmission is an amazing upgrade. Just ask Mogman.
 

Mogman

Moderator
Staff member
Moderator
Steel Soldiers Supporter
6,883
9,531
113
Location
Papalote, TX
120 in the DuraVee (well that is as high as the GPS speedo indicates), 85 in the stock Detroit 6.2 with the 6L80 6 speed transmission also with a GPS speedo.
 
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