
Originally Posted by
AKMark
Gotcha, yeah I ran his numbers through an RPM calculator.
If he's running stock 31" tires at 60 mph he's running 1288 RPM's. WAY TOO LOW!!!
No wonder it's gutless.
I doubt a turbo is going go help very much at those low rpm's. A Cummins 6BT would be happy at those rpm's though. That's about what mine runs at 60 mph.
1990 ¾ ton 4x4 Chevy Suburban
-Cummins Diesel - 12 valve - factory rebuilt
-6 speed bullet proof manual transmission - NV5600
-Gear Vendors Overdrive
-Upgraded Holset HX-35 turbo
-NP205 iron transfer case
-3.73 gears
1982 ½ ton Chevy Suburban
-6.2L diesel - high nickle crack free 1982 block
-Stans headers
-Ported heads
-Timing gear
-4 speed automatic
-3.08 gears
-30 mpg on freeway