View Single Post
  #20  
Old January 13th, 2022, 11:34 PM
Quigley's Avatar
Quigley Quigley is offline
-= Dues Paid =-
 
Join Date: Mar 2013
Location: New Hampton,Iowa
Truck: 1966 1000 Wideside 1962 1500 Wideside 401 Magnum
Posts: 187
Rep Power: 110
Quigley will become famous soon enough
Default Re: The fuel efficient GMC V6

When I still had the 305D in my 62 1500 with 318 three speed and .456 rear gears I got 15 mpg on trips averaging 60 mph, couldnít hardly believe it but it did. Now I have a 401 magnum with a 650 Edelbrock EVS2 and a 319OD trans and am getting 12 on trips. Pipes are pretty black and I think itís a little rich. I put a bung in the exhaust and acquired a air fuel ratio device ,but have to wait till spring and the salt is off the roads to try. Has anyone tried this approach or tried fuel injection. Dave
Reply With Quote