221 was the first Windsor, which later went up to 260, then 289, etc. There's a wiki page here.

281 is the current 4.6L (all OHC of some sort with various numbers of valves per cylinder).

 

As stated earlier...The Cleveland IS NOT a big block. Yes it is a little different than a Windsor (shorter deck than a Windsor (9.2" deck) and smaller main journals), but it is still a small block. Yes it had crazy large runners in the heads, but it was no big block. Modifications off of the Cleveland platform are also small blocks including the 400 and 351M. They are sometimes called medium blocks due to their head size, but they are small blocks.

When you think big block, think about the head size because cubic inch displacement can trick you. Yes you can bore and stroke a Dart Windsor to 454, but it is a small block as long as you have small block heads on it. When you get intake runners around 300cc, flow numbers around 360-370cfm, and 2.25" intake valves, you will know you have a big block.

 

AFAIK, a 331 is an 0.030" over 302 block with a 3.25" stroker crank. Not anything that Ford ever produced as OE.

 

By the time you figure in all of the Lincoln and Mercury variants, there were a slew of other displacements produced, particularly with regard to the FE engine configuration...

And don't forget the 385 series motors, and Y blocks....

 

Isn't Chevy the only one to truly have a big block and a small block?

Ford is based on engine series.

Pontiac is a Pontiac.

Buick & Olds???

Mopar I don't know anything about.

 

Two of each, actually. The 348-409 "W" engine was the early 60's "BB", and the current LS engine series shares bore spacing with the traditional "SBC" but to my knowledge nothing else.

As complex as Ford, maybe more so. Within the earlier engine families different car makes (Dodge, Plymouth, Chrysler, etc.) sometimes used unique displacements. Sometimes displacements were "shared" across different families with B&S that might be the same, or could be different. Quite a few that I was not aware of (I always liked the 4.25"B x 3.38"S short-stroke 383, didn't even know they made that size any other way), even though my Dad has been strictly a Dodge customer since at least as far back as 1960.

Briefly,

A & LA "SB"
Early, Late, and current Hemi
B & RB "BB"

Link


Norm