Great,
I am getting a stumbling at about 1500 RPM. Like a lugging in fourth gear
I changed:
Spark plug wire~ autolite
Spark plugs NGK
Front right exhuast manifold (after a little porting) great help
Holey muffler to resonator
vacuum hoses to the trans modulator, intake port and fuel regulator. Underneath the "T" hose coupling was a crack.
Conditions improved a little each time I made changes,but the stumbling came back
I hoping the change from a 15 year modulator to a Fram solves it.
Though it is a daily driver, I plan to change intake and exhaust springs and seals.
Go to 1.7 to 1 roller rockers and new pushrods.
Lucas additive to fresh trans fluld and trans filter.
Any other chime ins are welcome
Thanks again
