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Author Topic:   C4 line pressure

Posts: 210
From: Sumner, WA
Registered: Dec 2001

posted 07-13-2002 05:59 PM     Click Here to See the Profile for Kyle   Click Here to Email Kyle     Edit/Delete Message   Reply w/Quote
What controls the line pressure on a C4? The modulator? The tranny kickdown linkage? Last night's race: launched in first gear, shifted into second (which normally shifts) and nothing happened, shifted into drive and the tranny went into third. One guy told me that the line pressure is screwed up. I don't run a kick down lever, and the transpak kit says not to hook up the modulator when in full competition trim.

Kyle Laramore

63 Fairlane: 302, Victor Jr. heads and intake, solid lift cam, super comp headers, MSD 6al and duraspark, 650 DP carb, C4 w/ Hughes converter, man. valve body

66 Mustang coupe: 289, offy intake, Holley 600 vac. sec., 3spd stick

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Posts: 52
From: Charlottetown, PEI, Canada
Registered: Nov 2001

posted 07-14-2002 10:53 AM     Click Here to See the Profile for Mario428   Click Here to Email Mario428     Edit/Delete Message   Reply w/Quote
Line pressure in controlled by a pressure regulator valve. Modulator has a effect on line press but a small one.
I would think you have servo problems or your 2nd gear band needs to be adjusted badly.
Does it shift into 2nd if you are not racing and going easy on the throttle?

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Posts: 22
From: Sumner, Wa 98390
Registered: Jul 2002

posted 07-22-2002 08:45 PM     Click Here to See the Profile for Keith   Click Here to Email Keith     Edit/Delete Message   Reply w/Quote
This may be a stupid question, but is you shifter linkage set right???? It happened to me once.
Good Luck!

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