Ford Big Block Firing Order for the 390, 428 and 460

The Ford big block firing order is 1-5-4-2-6-3-7-8, and the distributor rotor turns counterclockwise. That holds for the whole FE family, the 352, 360, 390, 406, 427 and 428, and for the later 385 series 429 and 460. Ford numbers its cylinders differently from GM: 1, 2, 3 and 4 run front to back on the passenger side, and 5, 6, 7 and 8 run front to back on the driver side. Get that numbering wrong and the right firing order still produces an engine that will not run.

The diagram at the top of this page is drawn from above with the front of the engine at the top, so the passenger bank is on the right. Each cylinder shows the position it fires in. If you are chasing a single misplaced wire, that is faster than counting through the sequence every time.

Ford 390 Firing Order and FE Cylinder Numbering

The FE was Ford's big block from 1958 into the mid 1970s, and it powered everything from Galaxies and Thunderbirds to the 390 GT Mustang, the 428 Cobra Jet cars and the 427 race engines. The Ford 390 firing order is the same as every other FE: 1-5-4-2-6-3-7-8, with the rotor turning counterclockwise and the distributor at the front of the engine.

Ford's numbering is the part that catches people who learned on Chevrolets. Cylinder 1 is the front cylinder on the passenger side, not the driver side. The passenger bank reads 1, 2, 3, 4 from front to back, and the driver bank reads 5, 6, 7, 8. Some Ford intake manifolds have the numbers cast in next to each runner, which is worth looking for before you start, because it removes all doubt.

Because the 428 Cobra Jet and Super Cobra Jet are FE engines, they use exactly the same order. A 428 CJ in a Mustang or a Torino is wired like a 390 truck engine. The difference between those engines is in the heads, intake, cam and rotating assembly, not in the ignition sequence. If you are not sure which FE you are looking at, our guide to Ford engine casting numbers will narrow it down.

Ford 460 Firing Order and the 385 Series

The 385 series replaced the FE as Ford's big block. It arrived for 1968 as the 429 in the Thunderbird and grew into the 460 the same year in the Lincoln, and the 460 lived on in trucks and vans well into the 1990s. The 429 Cobra Jet and Super Cobra Jet of 1970 and 1971 belong to this family, as does the 370 truck engine.

The Ford 460 firing order is 1-5-4-2-6-3-7-8, the same as the FE. The rotor turns counterclockwise, the distributor is at the front, and the cylinder numbering is the same Ford pattern: 1 through 4 on the passenger side, 5 through 8 on the driver side. In other words, everything you know about wiring a 390 transfers directly to a 429 or 460, even though the two engine families share almost no parts.

The one exception to watch for is marine. Twin engine boats often run one engine in reverse rotation, and a reverse rotation 460 uses a different firing order and a cam ground to suit it. If the engine came out of a boat, confirm which rotation it is before you trust any automotive chart, including this one.

The Trap: The 351 and 5.0 HO Use a Different Order

Here is where most of the bad advice comes from. Ford ran two V8 firing orders in the classic era, and the big blocks share theirs with the early small block, not with every small block. The 260, 289 and early 302 use 1-5-4-2-6-3-7-8, the same as the FE and 385. The 351 Windsor, the 351 Cleveland, the 351M and 400, and the 5.0 HO that Ford introduced in the 1980s use 1-3-7-2-6-5-4-8.

Ford parts store charts often stack these two sequences next to each other with the engines listed in small print, and it is easy to grab the wrong line. If someone tells you a 460 fires 1-3-7-2-6-5-4-8, they have read the 351 row. A big block wired to that order will not start. Our Windsor vs Cleveland piece covers why those two 351s are different engines despite sharing a firing order.

Every Ford big block fires 1-5-4-2-6-3-7-8. If a chart says 1-3-7-2-6-5-4-8, you are reading the 351 line.

How to Wire a Ford Big Block Distributor Cap

Do not trust the cap to tell you where cylinder 1 is. The distributor can be installed in more than one position, so the tower that was number one when the engine left the factory may not be number one now. Find it from the engine.

Pull the plug from cylinder 1, the front cylinder on the passenger side. Put a thumb over the hole and turn the engine over in its normal direction until you feel compression. Keep turning slowly until the timing mark on the balancer lines up with zero on the timing pointer. The piston is now at top dead center on the compression stroke.

Remove the cap and note which terminal the rotor points to. That is the number one tower. Now work counterclockwise around the cap, viewed from above, and lay the wires down in order: 1, 5, 4, 2, 6, 3, 7, 8. Counterclockwise is the direction the rotor turns on every FE and 385 series engine. Wiring the cap clockwise by habit, the way a Chevrolet is done, is the classic mistake, and it makes the engine pop and backfire without ever catching.

If the rotor is not pointing near a terminal at TDC, the distributor is a tooth or more out. Lift it, turn the shaft until the rotor points at a convenient tower with the engine still at TDC, make sure the shaft seats on the oil pump drive, and wire from there.

Ford FE Plug Wire Routing: Separate 7 and 8

Look at the driver side bank on the diagram. Cylinders 7 and 8 are the two rear cylinders on that side, they sit next to each other, and they fire back to back at the end of the sequence. They are the only adjacent pair on the engine that fire one right after the other. Run those wires parallel and tight together and the spark in one can induce a voltage in the other, which shows up as a miss or detonation on the rear of the driver bank.

Keep the 7 and 8 wires apart along their full run, or cross them at a right angle where they have to meet. Factory looms were laid out to do this, and a lot of aftermarket wire sets are not. When a big block Ford picks up a miss right after new plug wires, check those two first.

Setting Timing on a Ford Big Block After Rewiring

With the wires in order the engine should start and idle. Set base timing with a light on the number one wire, following the specification for your engine and the vacuum advance procedure it calls for. Because the rotor turns counterclockwise on a Ford big block, rotating the distributor housing clockwise advances the timing, and rotating it counterclockwise retards it. That is the opposite of a Chevrolet, so if you have spent years tuning GM engines, say it out loud before you turn the housing.

If the engine still runs badly, go back through the list: number one is the front passenger cylinder, TDC is on the compression stroke rather than exhaust, the cap is wired counterclockwise, you are using the 1-5-4-2-6-3-7-8 order rather than the 351 order, and wires 7 and 8 are separated.

Frequently Asked Questions

What is the firing order of a Ford 390?

The Ford 390 FE fires 1-5-4-2-6-3-7-8 with the distributor rotor turning counterclockwise. Cylinders 1 through 4 are on the passenger side, front to back, and 5 through 8 are on the driver side. Every FE engine, including the 352, 427 and 428, uses the same order.

What is the firing order of a Ford 460?

The 460 and its 385 series sibling the 429 fire 1-5-4-2-6-3-7-8, the same as the FE. The rotor turns counterclockwise and the cylinders are numbered 1 to 4 on the passenger side and 5 to 8 on the driver side. Reverse rotation marine 460s use a different order.

Which way does a Ford big block distributor turn?

Counterclockwise, viewed from above, on both FE and 385 series engines. Wire the cap counterclockwise from the number one tower. Because the rotor turns counterclockwise, turning the distributor housing clockwise advances the timing, which is the reverse of most Chevrolet engines.

Is the Ford 460 firing order the same as the 351?

No. The 460, 429 and every FE use 1-5-4-2-6-3-7-8, shared with the 289 and early 302. The 351 Windsor, 351 Cleveland, 351M, 400 and 5.0 HO use 1-3-7-2-6-5-4-8. Mixing the two up is the most common Ford firing order mistake.