ignition timing - Pirate4x4.Com : 4x4 and Off-Road Forum

jslater · 04-18-2003, 09:42 PM

Just wondering what the factory timing for an early (74') 302 is? I set it 8* btdc. Runs good but need to know if that's correct.

HNRYS69 · 04-18-2003, 10:09 PM

I run around 15-18 degree and love it! I also plugged off the vacum advance if you have one, runs much better at highway speeds... I have heard that older fords have problems with the vacum advances..

Oatmeal · 04-21-2003, 08:21 PM

Your 302 will run best with the most timing it'll tolerate. Get the motor nice and warmed up, put it under a load (ie. a steep hill in top gear) advanced the timing till it starts to ping, than back it off a couple degrees. Also, it'll pull away from a stop cleaner with the vacuum advanced hooked up and get slightly better mileage.

jslater · 04-22-2003, 07:42 AM

I was going to shoot for 36-42* total but don't think I can get that much. maybe 28-34* total is more reasonable. I am pretty sure 27* total is doable but that means 12* initial. Hope it's ok??

04-18-2003, 09:42 PM	#1 (permalink)
jslater Registered User Join Date: Nov 2001 Member # 8243 Location: Lodi, CA Posts: 348	ignition timing Just wondering what the factory timing for an early (74') 302 is? I set it 8* btdc. Runs good but need to know if that's correct. __________________ Jay

04-18-2003, 10:09 PM	#2 (permalink)
HNRYS69 Registered User Join Date: Sep 2002 Member # 13898 Location: Reno, NV Posts: 639	I run around 15-18 degree and love it! I also plugged off the vacum advance if you have one, runs much better at highway speeds... I have heard that older fords have problems with the vacum advances.. __________________ - Andy Henry 69 bronco, built 302, C4, BC-3.5in lift, sawzall body lift, 37" MTR's, PTO winch [url=http://hnrys69.classicbroncos.com/]Click to visit my webpage!![/url]

04-22-2003, 07:42 AM	#4 (permalink)
jslater Registered User Join Date: Nov 2001 Member # 8243 Location: Lodi, CA Posts: 348	I was going to shoot for 36-42* total but don't think I can get that much. maybe 28-34* total is more reasonable. I am pretty sure 27* total is doable but that means 12* initial. Hope it's ok?? __________________ Jay

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04-21-2003, 08:21 PM	#3 (permalink)
Oatmeal Registered User Join Date: Oct 2002 Member # 14600 Location: Covina,Ca. Posts: 1,010	Your 302 will run best with the most timing it'll tolerate. Get the motor nice and warmed up, put it under a load (ie. a steep hill in top gear) advanced the timing till it starts to ping, than back it off a couple degrees. Also, it'll pull away from a stop cleaner with the vacuum advanced hooked up and get slightly better mileage.