Ford Maverick combo

[Jeff Lee]

Originally Posted by partsbob67

Must be same year and make as car used, aftermarket NHRA- accepted cylinder blocks permitted. section 10a page 3 in the stock section.

Engine must be same year and make as car used. That means it has to have all the specs listed by NHRA for the year / make and model claimed. You can put a 1984 Ford 302 block in the '71 Maverick as long as it meets the bore / stroke specifications.

Note there is a comma separating the two thoughts.

Aftermarket NHRA accepted cylinder blocks permitted. That means if a Dart, World Products, etc., block is what you want to use it is OK only if approved by NHRA.

Use some common sense. Why would NHRA want a '71 (only) OEM block in your '71 Maverick? And then also allow an aftermarket non-OEM block?
Some factory production blocks have no external markings on them indicating what year the block was manufactured. It doesn't make sense.