Join Date: Jan 2006
Location: Pocatello, Idaho
"Nuttering" helps but one last step has not been emphasized.
There is a thread out there about this but it needs to be included in this thread too. Apologies if it's in here.
The computer controlled ignitions, include a dizzy that has either 6.5 or 7.5* of mechanical advance. The computer adds more advance if it's required. When you bypass the computer (Nutter), you limit your mechanical advance to about half what it could be.
Pick up a dizzy for a '79 (non-computer) 258. The mechanical advance is 13.5 or 18* of mechanical advance. You'll get that 'snappy' throttle response. Search distributor swap for details on how to it
Did mine a couple weeks ago. Cost about $60 after core return from CarQuest.
'95 ZJ Laredo, 4.0L, Auto, 225K, Forest Grn
'98 ZJ Laredo, 4.0L, Auto, 210K, White