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Are There Any 8.1 Experts?

MEGA14

By MEGA14
in 2000-2014 Silverado HD & Sierra HD

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MEGA14 Enthusiast

MEGA14

Posted
Posted

I have a 2002 Silverado 8.1/Allison and I have questions .

 

What kind of power upgrades for the 8.1 which will keep in mind the Allison Transmission , will be safe for the transmission ?

 

From what I know , the 8.1 comes with enough power that will not damage the Allison .

 

Will any upgrades in power , like PCM mods , require a mod to the Allison?

 

I would like more power but not at the expense of hurting the tranny.

 

At present , I have a K&N but have removed the "clean and oil" filter with an identical Amsoil filter which requires no oiling , rather it only requires cleaning with a vacuum cleaner and eliminates the "red oil damage" of the K&N filter to the MAF . It has so far worked remarkably .

 

I am running on Amsoil 5W30 (Synthetic) and love it .

 

Looking for other tips .

 

Thanks .

Jacqson Enthusiast

Jacqson

Posted
Posted
I have a 2002 Silverado 8.1/Allison and I have questions .

 

What kind of power upgrades for the 8.1 which will keep in mind the Allison Transmission , will be safe for the transmission ?

 

From what I know , the 8.1 comes with enough power that will not damage the Allison .

 

Will any upgrades in power , like PCM mods , require a mod to the Allison?

 

I would like more power but not at the expense of hurting the tranny.

 

At present , I have a K&N but have removed the "clean and oil" filter with an identical Amsoil filter which requires no oiling , rather it only requires cleaning with a vacuum cleaner and eliminates the "red oil damage" of the K&N filter to the MAF . It has so far worked remarkably .

 

I am running on Amsoil 5W30 (Synthetic) and love it .

 

Looking for other tips .

 

Thanks .

 

 

Give these guys a call. They will be able to answer any questions or concerns that you may have. I'm pretty sure a PCM tune will do the trick.(www.westers_garage.eidnet.org/)( 1-888-937-8371 or 1-403-377-2277). He is based in Alberta, Canada but he has dealers in the U.S. This guy really knows his stuff.

Shaners Senior Enthusiast

Shaners

Posted
Posted

I doubt your 8.1L will hurt the tranny unless you do something extreme like a supercharger.

 

I believe the Ally can handle close to 1000 ft/lb of tourque in its' stock config.

 

Remember that the Ally is also the same tranny that is behind the tourquey Dmax!

ABQFirefighter Enthusiast

ABQFirefighter

Posted
Posted

I have a Wester's tuned PCM from my '01 8'1L 1500HD. I don't have the truck anymore, I sold it. It is tuned for 5000' elevation, 80% torque management removal and dual tune 87/91 octane and 4.10 gears. I am checking with Wester's now to see if it will work in an '02. Make me an offer if interested. They are selling for $399 right now, normally $495 and you get to keep your stock PCM.

MEGA14 Enthusiast

MEGA14

Posted
  • Author
Posted

Thanks for the info , Guys .

 

As for the PCM tune , I'll be looking at them all and I'll let you know if I am interested , ABQ . Thanks .

BigJayDogg3 Senior Enthusiast

BigJayDogg3

Posted
Posted
I have a Wester's tuned PCM from my '01 8'1L 1500HD. I don't have the truck anymore, I sold it. It is tuned for 5000' elevation, 80% torque management removal and dual tune 87/91 octane and 4.10 gears. I am checking with Wester's now to see if it will work in an '02. Make me an offer if interested. They are selling for $399 right now, normally $495 and you get to keep your stock PCM.

 

 

They had 8.1s in the 1500HDs in 01? :(

StoneyPgh Enthusiast

StoneyPgh

Posted
Posted
They had 8.1s in the 1500HDs in 01? :(

Don't think so. To the best of my knowledge, the 8.1L was only available in the '01-'06 2500 HD and 3500 trucks. (please correct me if I'm wrong) :(

Shaners Senior Enthusiast

Shaners

Posted
Posted
I have a Wester's tuned PCM from my '01 8'1L 1500HD. I don't have the truck anymore, I sold it. It is tuned for 5000' elevation, 80% torque management removal and dual tune 87/91 octane and 4.10 gears. I am checking with Wester's now to see if it will work in an '02. Make me an offer if interested. They are selling for $399 right now, normally $495 and you get to keep your stock PCM.

 

 

They had 8.1s in the 1500HDs in 01? :thumbs:

 

 

I thnk he typo'd... his sig says his old truck was a 2500HD 8.1L

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