Which one do i have 6.2 or 6.5?

[rookie]

How can i tell wich motor i have. i have a 94 m998 a1

 

[Retiredwarhorses]

Need a pic of the back of the motor at the Tach drive....rear valley of the motor near where the trans bolts up.

 

[rookie]

Ok retiredwarhorse how do u upload pics to the post

 

[NDT]

Press "go advanced" then " manage attachments". Isn't it oil pump drive clamp on driver's side is 6.2, passenger is 6.5.

 

[Retiredwarhorses]

Press "go advanced" then " manage attachments". Isn't it oil pump drive clamp on driver's side is 6.2, passenger is 6.5.

i believe so...I just thought it easier to get a pic and put any questions to bed.
or a search will find its been talked about before...as has dozens of other topics.

 

[Mike82ndABN]

https://halfmastpsmag.wordpress.com...ween-the-hmmwv-6-2l-and-6-5l-detuned-engines/

 

[tage]

link the gov planet aution

 

[rookie]

I will get a picture and post

 

[rookie]

Here are the pics

 

[NDT]

Looks like a fire breathin' u-joint snappin' 6.5.

 

[rookie]

More pics

 

[rookie]

So is that a good thing

 

[Retiredwarhorses]

Yup...

 

[Retiredwarhorses]

So is that a good thing

they only make 3 motors for the truck....6.2, 6.5 or 6.5Turbo, and the turbo is on newer trucks.
so not sure what you mean is that a good thing? I guess you get .3 more and more is always better right? Lol

 

[rookie]

Yes i am glad i have the 6.5 i hear bad things on the 6.2

 

[Retiredwarhorses]

Yes i am glad i have the 6.5 i hear bad things on the 6.2

for the most part...it's the same motor.

 

[rookie]

When i ordered my water pump for the 6.5 1994 it came wrong. And then i took of my pump took it to the auto parts store and it matched a 1993 6.2. Thats why a was confused at what motor i had

 

[86humv]

6.5 de-tuned and 6.2 use the same water pump.[ V velt trucks ].
6.5 Serpentine belt motors have a different water pump and pump plate.

 

[rookie]

Thanks for the info i was thinking i had a hybrid motor of some kind

 

[wcorp87370]

6.5 is just bored out 6.2l same engine, same performance. In my opinion; 6.2/6.5 is much better than 6.5turbo, because 6.2l does not break down and has no electronic parts. everything is manual, mechanical and cheap to replace. 6.5 turbo has not much better performance and breaks too often