6.2L (L9H) Owners - Get all your questions answered here

[RyanbabZ71]

The NHT leaf springs do have a different part number (as when I was having issues I looked into going that route). I have no idea what the difference is.

[ChevyTech77]

That's pretty much what I was saying in post # 222 but it's interesting to note that neither the Z82 nor the Z85 suspension packages show anything about any heavier springs. In the parts catalog there are only two different part numbers for leaf springs on 1500 series trucks (which I also find hard to believe but I can't argue with the GM parts catalog), NHT/HP2 and NON-NHT/HP2, that's it.

 

HP2 = Hybrid propulstion system.

Edited February 1, 2012 by ChevyTech77

[EX-F150 owner]

2 questions about the transmission in our NHT trucks.

 

1st, is it any different than the non NHT trucks?

 

2nd, Is it based of the Allison transmission?

 

I have been told that the 6 speed transmissions in our trucks with the NHT package are more heavy duty than the standard 6 speed and that the technology in them is based off the Allison transmisson.

[RyanbabZ71]

1. no

 

2. no

[EX-F150 owner]

Thanks Ryan

[becker87]

yep NHT 3.73 14 bolt,where did you find info about wider springs than non NHT? have info a link?

 

 

Sorry i do not have a link, i know the NHT and non-NHT springs are different as others have stated, i assumed they were wider. I hope somebody can chime in on the exact difference between the two.

 

Ryan, don't the NHT trucks have the tranny cooler, or do all the 6 speeds?

[RyanbabZ71]

Mine has a tranny cooler, it was part of the PDU (power pack plus pkg). It was with the trailering pkg and 6 speed trans

[becker87]

Thanks for clearing that up!

[ChevyTech77]

Z82 trailering package, that I previously listed, contains the aux trans and engine oil coolers.

[michigan2500hd]

Wondering why our 6.2s have the tailpipe going straight out under the bumper..is it because its a loud engine?..might make a person in a vehicle next to us uncomfortable? Lol..anyone know ??

[becker87]

Wondering why our 6.2s have the tailpipe going straight out under the bumper..is it because its a loud engine?..might make a person in a vehicle next to us uncomfortable? Lol..anyone know ??

 

 

Just to distinguish itself from others is the best guess I can come up with.

[michigan2500hd]

They sure sound tough at least to me. It seems to un-nerve the wife if she is anywhere close to the back of the truck when I start it. ( hehehe)..wouldn't dream of looking for an aftermarket exhast system for the 6.2

[Wolfmanjohn]

Wondering why our 6.2s have the tailpipe going straight out under the bumper..is it because its a loud engine?..might make a person in a vehicle next to us uncomfortable? Lol..anyone know ??

 

 

Fewer bends in exhaust piping = freer air flow and healthier sound.

[becker87]

Wondering why our 6.2s have the tailpipe going straight out under the bumper..is it because its a loud engine?..might make a person in a vehicle next to us uncomfortable? Lol..anyone know ??

 

 

Fewer bends in exhaust piping = freer air flow and healthier sound.

 

 

The helthier sound comes from bigger pipes, and the one less bend in the exhaust, while it is fewer, im sure has no effect on HP(or extremely minimal)

[ChevyTech77]

I'm pretty sure that the size of pipe was used for less backpressure but making a 90 degree-ish bend, right after the resonator, wasn't going to happen in that amount of space with that size of pipe, is my guess. And an educated one, at that.