ISKWEZM I have a ? for you

[TOM B]

Did you run that C4 with the blower, if so what vacuum modulator did you run.
Im having problems with mine shifting into second way to fast as I would like to wind it out a little more.

 

[iskwezm]

no i never did, but buy a adjustable modulator so you can "tune" the shift point through the screw inside the vac. port.

 

[66bluepony]

C4

Use intake vacumn. Screw is in mod nipple, screw in about 2 turns at a time, will also move 2-3 shif up also. If 2-3 is ok now, you can open the valve body and change the 1-2 spring.