Jump to content
Sign in to follow this  
  • entry
    1
  • comments
    6
  • views
    1,326

About this blog

B Model Mack restoration

Entries in this blog

 

E6 300 4Valve need more speed.

Have 1985 R688ST with a e6 300 and a T2090 trans, also has 4.64 reas. Has fuel turned up and pulls excellent at 1600 rpm, no complaints there . But my issue now is I can't get this truck to go more than 65 mph?? Any thoughts, ideas, or anything that may help me squeeze another 5 mph out of this thing now. Thank you

DanielG

DanielG

Sign in to follow this  

Welcome to BMT!

...The world's best antique, classic & modern Mack Truck support forum! Founded in 2000, BigMackTrucks.com is the place to go for everything related to Mack Trucks!

BMT!

BigMackTrucks.com is owned and operated by Watt's Truck Center, New Alexandria, PA. This forum and it's contents are not affiliated with Mack Trucks, Inc. or Volvo Trucks North America.

×