the 351w is a very good engine, it can handle a lot of power before the block splits, that usually happens at around 800hp. the 351m is an ok engine, good for use in trucks and for the basis of building a good 400. the 351c on the other hand is tough to beat, even by the chevy 350.

The firing order for a Ford 351 Windsor is 1-3-5-7-2-6-5-4-8, which differs from most other V-8 engines the company manufactures. Ford numbers its cylinders beginning at the front left of the engine, with cylinders one through four on that side and five through eight on the right.

Almost all engines have a timing setting that is before top dead center. The most common setting for the 351W is 6° before top dead center.

could go up to 300,000 miles if you never run it over 3000 rpm or it could last another 50 miles if you run it at say maybe 8000 rpm.

Running Holley HP EFI management, sans turbos, the 351 Windsor dyno’d at 409 horsepower and about 405 pound-feet of torque. That’s pretty stout, but nothing to shout from the mountaintop. Holdener explained that a different cam could’ve helped those numbers out, if ever so slightly, but now it’s time to add boost.

The 351W heads are the exact same size as 302/289 heads, just have bigger valves and combustion chamber. 302 intake/exhaust manifolds will still fit fine.

yes, you can fit either a 351W or a 351C head on a 289/302.

The larger 351W and 351C engines are 28-ounce offset balanced. Offset balance is determined during an engine rebuild—a builder can go 28- or 50-ounce during the balancing process.

A flywheel that has become out of balance will cause a vehicle vibration that increases with engine speed. Check for imbalance by revving a known good engine to 2500-3000 rpm with the clutch pedal depressed and feeling for any flywheel vibration.

All sbf are externally balanced. The harmonic balancer for a 351W is a 50oz 4 bolt model. Check what you have on the front, it should be 6.5″ OD and 3.5″ wide.