Top speed

[papakb]

Gotta agree with you Steve, if you wanna to go fast buy a Honda.................

 

[ken]

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]

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]

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]

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]

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]

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]

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]

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]

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

 

[Jarretfd246]

89 m998 6.2l
gps said 76 but once the fan kicks on it's back down to 65 lol

 

[drivebymashing]

At 65mph it feels like I'm going 150mph especially with no doors.

 

[Jarretfd246]

yea I put mine back on, was afraid of dropping my phone or wallet on the highway.

 

[Mfal]

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]

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.....

 

[JetbikeAnt]

Had my M1045A2 up to 72mph on its trip home from NC to PA. I love that 4 speed!

 

[TOBASH]

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]

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.

 

[springer1981]

120 in the DuraVee...

I never want to go that fast in ANY AM General product LOL

 

[Gamble]

80 mph - Short Duration - 6.5 Melton with 4 Speed with 40 in tires