MatthewMcD
SILVER Star
I moved this to a separate thread to apply some focus.
My original question is, why is my top speed in 4th gear ~45-48 mph?
Background:
5/75 chassis with an estimated 68-70 F (PO said .5F but others have doubted that).
4 Speed transmission
32" tires
Vacuum advance on the distributor appears to work fine. At idle if I pull additional vacuum, it advances the timing noticeably. I pulled the plugs and they look amazing.
It has a mini-truck conversion to disk brakes in front. When raised the wheels turn easily. I recently rebuilt the knuckles and installed new calipers. (It drove this way before all that.)
Jacked up the rear driver's tire and rotated it. The drive shaft turned 2 1/8 revolutions for each turn of the wheel.
There are no vacuum lines associated with the Transfer case and the front drive shaft turns freely in 2H.
I ordered a tach so I can get some real RPM numbers to help the investigation.
The vacuum advance on my distributor.
My original question is, why is my top speed in 4th gear ~45-48 mph?
Background:
5/75 chassis with an estimated 68-70 F (PO said .5F but others have doubted that).
4 Speed transmission
32" tires
Vacuum advance on the distributor appears to work fine. At idle if I pull additional vacuum, it advances the timing noticeably. I pulled the plugs and they look amazing.
It has a mini-truck conversion to disk brakes in front. When raised the wheels turn easily. I recently rebuilt the knuckles and installed new calipers. (It drove this way before all that.)
Jacked up the rear driver's tire and rotated it. The drive shaft turned 2 1/8 revolutions for each turn of the wheel.
There are no vacuum lines associated with the Transfer case and the front drive shaft turns freely in 2H.
I ordered a tach so I can get some real RPM numbers to help the investigation.
The vacuum advance on my distributor.