Firing Orders
Firing Orders |
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There are two common firing orders used for the small block Ford engine series. Below are diagrams of both. You CAN run either firing order, depending on which camshaft is in your engine - the crankshaft will support either one... Often, aftermarket camshafts have been swapped in place, which can be set-up to either either sequence. Note that the cylinders are numbered differently than "Brand X" cars, and that the firing order goes counterclockwise on the distributor cap. The 15426378 firing order was used on "stock" 221/260/289/302 engines from 1962 thru the late 80's. Non-"HO" 5.0's also used this firing order.
The 13726548 firing order was used on all 351 Windsor engines as well as the 82-up "Hi-Output" 5.0 engine.
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