|
|
Re: hi perf 440 timing curve
#115387
09/05/08 04:02 PM
09/05/08 04:02 PM
|
Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
Lefty
master
|
master
Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
|
Someone at Pertronix must read Mopar Action. When I verified the curve in my new Pertronics distrubitor it matched these specs from the Mopar Action archives to the letter. The 440 in my 66 Coronet runs very nice now.   http://www.moparaction.com/Tech/quest/SLOW_CURVE.html Quote:
Bob, assuming sufficient octane vs. C.R., you need a curve something close to this:
Under 1400RPM - no advance - set initial at 15 degrees BTDC
2000 - 10 dergees mech (25 total)
2500 - 20 degrees mech (35 total) - all in.
Plus, at LEAST 15 degrees of vacuum advance under light throttle (50 deg. total, 52-55 better).
If it currently doesn't go to full advance until 5500, you're giving up lots of power.
If it currently has less (or no) vacuum advance), you're giving up LOTS of fuel economy and fouling plugs.
Rick
|
|
|
|
|
|
|
