Add 273's, 340's & 360's to the "318 Race" ?

My thought was this......
If it's a 3.31 stroke, it shouldn't have a bigger bore than 4.10 (340 bored .060 over). And, if it's ANY bore over the stock 4.04 bore of a factory 340, then it automatically gets a .4 tenths deduction. So, my question is this: Is there a gain in performance using the X block IF it's, per say, a 340 cubic inch?? IF so, we can equalize the gain with a deduction of E.T. index...???
  • Keep in mind, this isn't about the money, because those that spend it on high end performance are taking hits in the penalty box. Truly, a factory stock 318 2bbl in a pickup truck can be the winner. That's what makes this fun, honesty and a chance that every participant could be the winner! (Remember, it's all in fun :) )
Open to thoughts...... from all ?????


I don't even have 4 bolt caps on my X block. Bore is 4.040 so the only advantage is I can spin it up and still have ring seal and not worry about the block being weak.