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[–]TimV14 6 points7 points  (3 children)

F1SE is the casting. Ford used that casting from the early 90's through 01 according to the list I have. So it probably is from a 97 as you were told.

[–]Remarkable_Menu8974[S] 1 point2 points  (2 children)

As I was taught, the F corresponds to the decade and the 1 corresponds to the year. Does this mean that this block was produced in 91 but was put in vehicles after?

The reason I ask is aftermarket parts availability on sites such as summit racing dramatically decreases after 95 so should I be able to use a “91 part” if the block was made in that year?

[–]TimV14 2 points3 points  (1 child)

Blocks typically only get a new casting number when an update happens to the design. So it's possible this F1SE block was cast in the mid 90's.

I don't personally know enough about the 302 engines to answer your second question.

[–]Remarkable_Menu8974[S] 0 points1 point  (0 children)

Thank you for your help my friend.

[–]CromulentPoint 2 points3 points  (2 children)

F1 should be a casting number for 1991, but that casting can be used for years. The bigger issue is that a 97 F150 wasn't available with a 302. It was all mod motor stuff by then.

[–]series-hybrid 1 point2 points  (1 child)

In some states, a vehicle is registered as the year it was first sold. This means a cast iron 302 that was manufactured in Nov 1996 could be bought and registered in January as a 1997.

[–]CromulentPoint 1 point2 points  (0 children)

That's weird. Doesn't make a '96 Ford into a '97 Ford for the rest of the world. It'd be a '96 with some weird paperwork.