428FE Advance
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Freshman User
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428FE Advance
Do you know what kind of advance and spark plug gap I should be running with a 428FE engine for max horsepower? I am not worried about gas mileage.
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Edelbrock Performer Intake
Crane Cam 290 duration 520 lift
Heddman Headers
10.5:1 compression
bored .030
accel street billet distributor 52200
holley 750 carb
mustang heads<!-- / message --> <!-- controls -->
Thread Starter
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Freshman User
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Lead Driver
Joined: Aug 2003
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From: **** hole San Jose ca.
THe old Stock advance you adjust with washer type shims the nipple unscrews. But if it's the new sealed type then you do it inside the tube end nipple with a small allen wrench inserted in the vac nipple.tube... my 2ents.. orich..........
Lead Driver
Joined: Jan 2003
Posts: 9,893
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From: Ohio
I never run vacuum advance on any of my stuff. Good or bad depending on who you ask so can't help you with how to adjust. With what orich says....I can recall the aftermarket cans did have a set screw in the hose hole you can adjust.
With 22 degrees in the dizzy, that can give you about 18 initial, which might be a bit high, but might start okay(with 40 total). My 428 like about 14-15 degrees to idle correctly(and still starts okay). I'd say run with what you got.
With 22 degrees in the dizzy, that can give you about 18 initial, which might be a bit high, but might start okay(with 40 total). My 428 like about 14-15 degrees to idle correctly(and still starts okay). I'd say run with what you got.
Post Fiend
Joined: Mar 2004
Posts: 6,056
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From: Union, Washington
Well, back in the day of really good, honest to God leaded gas, Ford never recommended more than 38° mechanical advance. I did run 44° in my G/SA Ford Cobra 428SC with Ram Air in first and second gear, but always dropped back to 38° in high gear to prevent engine damage. With the 4 speed Cobra without Ram Air (G/S) I ran the 44° in 1st thru 3rd and then 38° in 4th. It made both cars quicker. It made for a lower ET but the mph was unchanged. On street machines with todays gas I keep timing no higher than 36°. If you notice in my signature pic, No vacuum advance, real race cars don't have vacuum advance!
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Elder User
Joined: Mar 2004
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From: Klamath Falls OR
I'm a mechanical advance as well. And do agree that 40 degrees total works well. I 2 would ditch the intake for something better. Also run a ignition box (like a MSD or Mallory) 6AL and run a set of Autolite 124. I never liked the 45's for my liking. That, you will notice right off the bat!!! No joke. JMHO
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I was not going to get into this question, but what is important is quality of fuel, air temperature, engine temperature, altitude, and if your timing tab is correctly set. If all the above is optimum, you can get away with more timing, but 38 degrees total timing is a good starting point. With poor conditions you can get detonation even at 38 degrees.
Elder User
Joined: Mar 2004
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From: Klamath Falls OR
I was not going to get into this question, but what is important is quality of fuel, air temperature, engine temperature, altitude, and if your timing tab is correctly set. If all the above is optimum, you can get away with more timing, but 38 degrees total timing is a good starting point. With poor conditions you can get detonation even at 38 degrees.
That is true as well. Run name brand fuel (like 76, Texeco, Shell and so on). Stay away from off brand places!!! And run a good breathable air filter like K&N or other aftermarket brands. JMHO
Post Fiend
Joined: Mar 2004
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From: Union, Washington
I was not going to get into this question, but what is important is quality of fuel, air temperature, engine temperature, altitude, and if your timing tab is correctly set. If all the above is optimum, you can get away with more timing, but 38 degrees total timing is a good starting point. With poor conditions you can get detonation even at 38 degrees.
Post Fiend
Joined: Mar 2004
Posts: 6,056
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From: Union, Washington
I can still get my hands on all the AV gas I want, or a better way to say it "AFFORD". AV gas, aka 100LL is unreasonable for street use. I used to have a great supply of the purple stuff, that's 115/145. It has so much lead in it, it cause inttermitent lead fouling. I had to cut it with unleaded premium to make my 428CJ run on it. But I still ran never more than 38° in high gear.
Elder User
Joined: Mar 2004
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From: Klamath Falls OR
I use to run AV Gas for a # of years, untill July of 07 when I sold my Blue Beast. I never had a problem with running 40 degrees in the valley in that havey azz truck of mine. But I ran 5 gal of Av gas with 14 gal of super. Worked out great. If you are running a auto trans does help fug that a little bit. I was running a NP435 in the Blue beast. Not for everyone persay.