firing order

David Fulford · 03-27-2001, 09:20 AM

I got a very slightly used ford crate motor from a shop that had a mechanics lean on a car that no one paid for. They told me it was a 302. This passed weekend I did something stupid and had to buy a Haynes manual to get the firing order and put the plug wires back on the distributor. In doing so I realized that according to the 64 1/2 to 73 haynes book...the driver's side spark plug wires were arranged to the 351W firing order. So I put the passenger side wires on according that order and fired it right up and was on the road. Is it possible the motor is a 351W. I didn't think my old carb, intake, etc. would work if it was. How do I tell.

Clark Rodgers · 03-27-2001, 10:19 AM

David,
If you installed a 302 intake rest assured this is not a 351W. The deck height would not allow the difference.
The reason for the changed firing order could be a 351W cam, these are interchangeable as long as the firing order is changed.
------------------
69 351W Sportsroof deluxe

[This message has been edited by Clark Rodgers (edited 03-27-2001).]

Tom351 · 03-27-2001, 12:58 PM

Clark is right, my 351W uses the 289 firing order because of the cam.

------------------
67 Fastback - Arctic White Pearl paint
351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Carter 750 CFM, Comp. Cam 477/510 219/233@.050, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.

My 351W Fastback

Dark Knight · 03-27-2001, 02:35 PM

ford switched the 302 to the 351w firing order in the late 70's, early 80's.. all the crate motors use the 351w firing order

------------------
84 convt,'95 302,AFR's, performer
3.55's, underdrives stock shorties
stock cam, 1.7's
14.06@100.21, 255RWHP on a hot day
265 on the mph/weight chart

03-27-2001, 09:20 AM	#1
David Fulford Registered Member Join Date: Oct 2000 Location: Charlotte NC Posts: 193	firing order I got a very slightly used ford crate motor from a shop that had a mechanics lean on a car that no one paid for. They told me it was a 302. This passed weekend I did something stupid and had to buy a Haynes manual to get the firing order and put the plug wires back on the distributor. In doing so I realized that according to the 64 1/2 to 73 haynes book...the driver's side spark plug wires were arranged to the 351W firing order. So I put the passenger side wires on according that order and fired it right up and was on the road. Is it possible the motor is a 351W. I didn't think my old carb, intake, etc. would work if it was. How do I tell.

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03-27-2001, 10:19 AM	#2
Clark Rodgers Registered Member Join Date: May 1999 Location: Rowlett,Texas Posts: 306	David, If you installed a 302 intake rest assured this is not a 351W. The deck height would not allow the difference. The reason for the changed firing order could be a 351W cam, these are interchangeable as long as the firing order is changed. ------------------ 69 351W Sportsroof deluxe [This message has been edited by Clark Rodgers (edited 03-27-2001).]

03-27-2001, 12:58 PM	#3
Tom351 Registered Member Join Date: Oct 2000 Location: Atlanta,GA,USA Posts: 278	Clark is right, my 351W uses the 289 firing order because of the cam. ------------------ 67 Fastback - Arctic White Pearl paint 351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Carter 750 CFM, Comp. Cam 477/510 219/233@.050, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars. My 351W Fastback

03-27-2001, 02:35 PM	#4
Dark Knight Registered Member Join Date: Oct 1998 Location: Az Posts: 854	ford switched the 302 to the 351w firing order in the late 70's, early 80's.. all the crate motors use the 351w firing order ------------------ 84 convt,'95 302,AFR's, performer 3.55's, underdrives stock shorties stock cam, 1.7's 14.06@100.21, 255RWHP on a hot day 265 on the mph/weight chart