Reprogram needed if doing a gear change

[n9oig]

I just changed from 3:54 gears to 4:10 about 250 rpm diff but now the power while towing seems to be lacking I pull various weights TT but does anyone know if the computer needs to be reprogramed for 4:10 gears


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2001 2500 4X4 QC SLT LWB Auto Ordered 3/16/2000 delivered to the dealer 5:30 pm CST on 5/9/2000

 

[csutton7]

i didn't--and haven't had any problems--the one thing that I must do is check the speedo to see if it's close or not--I do know if you have 35" tire & the 3. 54 gears you'll be off by about 15mph when the speedo shows 60-65 you'll be going 75-80mph--chris

 

[JRG]

I DINN'T NEED TO EITHER. JUST CHANGRD MY SPEEDO GEAR!

JRG

 

[n9oig]

No speedo gear change is nessary because mine is picked up off the rear end with the same sensor for the antilock driven by the carrier the carrier will still turn the same speed no matter what gear is put in itonly tire size will effect this setup I belive 98-01 setups are like this but thespeedo is right on as was before

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2001 2500 4X4 QC SLT LWB Auto Ordered 3/16/2000 delivered to the dealer 5:30 pm CST on 5/9/2000

 

[Fred Swanson]

I have the 3. 54's and just went from 265's to 285's and while driving by a couple of those speed limit trailers, that show your actual speed by radar, it was dead on.

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Fred Swanson
Co-Owner
Canyon State Components, LLC
www.canyonstatecomponents.com


'00 QC,SB,4x4,Auto,3. 54 w/LSD,Trailer Package,Tow Package,DTT's
TC(91%)&VB(80psi),DD2's,EZ,HOT PE,K&N RE-0880,Cummins RED Valve Cover