Thread: Can old Pontiacs perform like LS motors?
View Single Post
  #167  
Old 12-28-2019, 03:52 PM
i82much's Avatar
i82much i82much is offline
Ultimate Warrior
  
Join Date: Dec 2005
Posts: 2,998
Default
my 6.0 vortec, 6L90 with 4.10’s gets horrible gas mileage in my crew cab 2500HD. Should I pull the 505 and Muncie out of my GTO and put it in my truck to get better gas mileage?

Reply With QuoteReply With Quote