Li'l Red can be a bit persnickety in cold damp weather.
4180, 650 AVS or the 4160-750.
But like you said, as soon as the exhaust manifold heats up the stove it goes away.
I've never noticed her revving high because of venturi restriction.
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.
Locked
