351C Timing

Ford_Racer_1 · 09-12-2002, 08:20 PM

Does anyone know what the total timing should be on a 73, 351c
with two barrel heads.

Rev · 09-12-2002, 08:49 PM

I'm expecting you'll want 35-38 total all in by 3000 rpm. That's really just a guess though. Try that and see if you get any pinging or knock and good performance. If you do get pinging or knock, retard it a little until it doesn't do it and then maybe a little less.

When I ran 351W heads on my 306, I ran a whopping 45 degrees total because that's how it ran best with those relatively inefficient heads. With my more efficient TFTW heads, I run 38 toatal and 15 initial advance. I determined that at the drag strip. I advanced until I didn't get anymore performance improvement and with out detonation and then set it there.

Rev

Metal396 · 09-16-2002, 09:36 PM

What should i do about my 351c , sometimes it preignites when shutting off. its annoying as hell, and by tuning my timing (i dont know how yet) will i get alittle bit of performance gain? Thanks.

mustangman65_79 · 09-17-2002, 12:52 AM

called Dieseling. Not only will timming have an affect, but also the octane in your gas. U might want to use at least 89 octane, but try 92(91?)

Metal396 · 09-17-2002, 10:43 PM

yeah i think i will start using 89 octane more often. But ive also been told i just need to retard my timing alittle bit. And how do you tune the timing for better performance? anyone know? Thanks.

P.S.: ive heard of people tuning the carburator jets for better performance also, any ideas on that one?

mustangman65_79 · 09-18-2002, 02:15 AM

I usally time my car to 12 deg, u have to have a timming light, then u make sure your distrubitor vaccuum advance is disconnected. To time it from there, just turn the distrubitor till u reach about 12.

09-12-2002, 08:20 PM	#1
Ford_Racer_1 Registered Member Join Date: Sep 2002 Location: Georgia Posts: 4	351C Timing Does anyone know what the total timing should be on a 73, 351c with two barrel heads.

09-12-2002, 08:49 PM	#2
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	35-38 I'm expecting you'll want 35-38 total all in by 3000 rpm. That's really just a guess though. Try that and see if you get any pinging or knock and good performance. If you do get pinging or knock, retard it a little until it doesn't do it and then maybe a little less. When I ran 351W heads on my 306, I ran a whopping 45 degrees total because that's how it ran best with those relatively inefficient heads. With my more efficient TFTW heads, I run 38 toatal and 15 initial advance. I determined that at the drag strip. I advanced until I didn't get anymore performance improvement and with out detonation and then set it there. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

09-16-2002, 09:36 PM	#3
Metal396 Registered Member Join Date: Jun 2002 Location: Southern California Posts: 109	What should i do about my 351c , sometimes it preignites when shutting off. its annoying as hell, and by tuning my timing (i dont know how yet) will i get alittle bit of performance gain? Thanks. __________________ 1973 Mustang Coupe 351 cleveland 2v heads Edelbrock Performer Intake, Holley 600cfm carb Hooker Headers, 2.5 inch pipes, Magnaflow X-pipe, Flowmaster 2 chamber mufflers with turndowns. Stock Fmx tranny and 2.75 rear end My website:http://www.geocities.com/spddemontc User Rides Index: http://www.mustangworks.com/cgi-bin/...splay.cgi?2541

09-17-2002, 12:52 AM	#4
mustangman65_79 My poor 79 RIP Join Date: Oct 2001 Location: Suisun City, Posts: 2,320	called Dieseling. Not only will timming have an affect, but also the octane in your gas. U might want to use at least 89 octane, but try 92(91?) __________________ '84 mustang GT turbo '85 LTD '89 Camaro Irocz z28 '94 Lightning '96 Trans am

09-17-2002, 10:43 PM	#5
Metal396 Registered Member Join Date: Jun 2002 Location: Southern California Posts: 109	yeah i think i will start using 89 octane more often. But ive also been told i just need to retard my timing alittle bit. And how do you tune the timing for better performance? anyone know? Thanks. P.S.: ive heard of people tuning the carburator jets for better performance also, any ideas on that one? __________________ 1973 Mustang Coupe 351 cleveland 2v heads Edelbrock Performer Intake, Holley 600cfm carb Hooker Headers, 2.5 inch pipes, Magnaflow X-pipe, Flowmaster 2 chamber mufflers with turndowns. Stock Fmx tranny and 2.75 rear end My website:http://www.geocities.com/spddemontc User Rides Index: http://www.mustangworks.com/cgi-bin/...splay.cgi?2541

09-18-2002, 02:15 AM	#6
mustangman65_79 My poor 79 RIP Join Date: Oct 2001 Location: Suisun City, Posts: 2,320	I usally time my car to 12 deg, u have to have a timming light, then u make sure your distrubitor vaccuum advance is disconnected. To time it from there, just turn the distrubitor till u reach about 12. __________________ '84 mustang GT turbo '85 LTD '89 Camaro Irocz z28 '94 Lightning '96 Trans am

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