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What is the manufacture week/ year, it should be on the side of the tire, next to DOT, something like 34/20 (34th week of 2020)?

I am not a mechanical engineer and I just transpose from electrical engineering, where Power = Volts x Amps (and there could also be a time component if the two are time/ phase displaced, but to keep it simpler we can eliminate that). That translated to the mechanical engineering would be Power...

Air resistance/ drag increases as you go faster by the square cube law, where if you double your speed the air resistance quadruples, therefore it takes a lot more power to go faster…or go more aerodynamic like Action pointed out with that beauty :)

I did think about it, but for some reason something doesn’t feel right about modifying it that much, I would rather be passed by a Prius than change the engine, I love the way it sounds now that it runs well and how it feels, and it’s history.

Lol, but it still doesn’t beat the Pontiac Aztek

Changing the tires from 37” to 42” would increase the speed from 70mph to about 79.5mph, or about 13%. Given the amount of lifting and modifications required to fit the larger tire, it represents a relatively marginal improvement. We need more lol BtW, almost every HMMWV parts site has the...

Do you mean on 16.5s? Or on 17s? Which brings us back full circle to the thread topic lol.

The info we got is that the A0-A1 is the fastest and has a 2:56 ratio. The ECV already has more torque, and we are not talking about some huge increase...going from 70mph to 86mph is about 20%, so definatelly it sounds like a resonable trade since the ECV A1 was meant to carry heavy armor +...

The diagram should be for an AMC20 (or I thought it was), which is used in the H1 they say. A brand new one is listed for $4k vs. $1.5k -2k re-manufactured vs. <$300 for just the ring & pinion? But you are saying going lower is not common practice? Maybe because the thinking is that trading...

Here it is and if that's the case, can we just pop in/ swap the two gear parts and keep the same bearings and all other parts the same? Between front and back would be $600 + time, a great upgrade IMO?

Got it! Yes, Hammer laid out the ratios clearly. Are these differentials like in civilian trucks where it can be configured with different ratios by just changing a few parts like the pinion & ring and keep everything else the same?

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Please disregard my ignorance as I am not mechanically familiar with the truck, would something like this 2.56 ring & pinion gear set do it or there is more to it? https://www.ebay.com/itm/165102922846?hash=item2670e6ac5e:g:w9YAAOSwu6FhV2PK

meant to reply on next post

No idea lol...that's why I am asking here the experts. I would find a place that would send one already programmed and I would send them back some core like the one on eBay: https://www.ebay.com/itm/115104862193?hash=item1accc8cff1:g:RAkAAOSwRRNhmepw I would keep mine unmodified in case...

Aha! So you engaged the Gravity Boosters aka downhill...I have the same transmission with 6.5L TD and maxed out at the 80mph on the speedometer, but didn't check with the GPS. The transmission shifts smoothly and after it goes into overdrive, it's all high RPMs from there. I will do another...

The 24 bolt wheels are like most beautiful women...a pain to deal with it...but satysfying when riding them...if you could please pardon my French lol

Lol, I secretelly hope however that the answer is not...changing the transmission gears and more like juicing up the engine?

Of course they are fake lol and I am sure made in china too, but it's the closest to the stock wheels which I like best, that's why I kept them. I personally don't like anything with holes in the wheel including the Cepek.

But I do have to ask lol...what did you do to get to 92mph?