danoreilly
Well-known member
- Joined
- Dec 16, 2010
- Messages
- 138
- Reaction score
- 4
- Location
- Colorado Springs, CO
- My Car
- 71 Mach1 351C 4V
02 Deluxe Convertible
67 Fairlane GT 390
I've owned my 71 Mach with a 351C for 10 years now. For all that time, I've never experienced a more cold blooded car. When cold, it idles ok, but put it in gear and it stalls (same thing coming to a stop at a corner). I have to be quick on the throttle to get it going - kinda hard on the tranny. Once it thoroughly warms up, it's fine.
The motor was rebuilt with a more aggressive Comp cam, better pistons, and the compression raised by 1.1 points by shaving the heads and deck. I'm running an Edelbrock Performer intake and a Holley 80457 carb. I have timing set at 8 BTDC due to the altitude I live at, and have fine tuned the mixture by vacuum to 12 inches, which i think is appropriate for the cam profile. I'm pulling power for the choke from the stator terminal on the alternator, and the choke pulls off properly. The idle speed is spot on at 600. Pertronix II electronic ignition and standard oe dizzy.
Personally, I suspect the carb is the problem. It's a factory refurb I bought from Holley. I'm open to all suggestions.
The motor was rebuilt with a more aggressive Comp cam, better pistons, and the compression raised by 1.1 points by shaving the heads and deck. I'm running an Edelbrock Performer intake and a Holley 80457 carb. I have timing set at 8 BTDC due to the altitude I live at, and have fine tuned the mixture by vacuum to 12 inches, which i think is appropriate for the cam profile. I'm pulling power for the choke from the stator terminal on the alternator, and the choke pulls off properly. The idle speed is spot on at 600. Pertronix II electronic ignition and standard oe dizzy.
Personally, I suspect the carb is the problem. It's a factory refurb I bought from Holley. I'm open to all suggestions.