Quote:
Originally Posted by olddog
I'm not upset and respect your knowledge. My source for my statement was "Ford Performance" by Pat Ganahl page 50.
"All replacement 428 blocks sold by Ford after '72 were bored-out 391 truck blocks." He then goes on to describe the differences in the truck block. The previous sentence stated that some 390 blocks can be bored to 4.13 (428) if sonic checked.
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That's not true right there.. I had a 74 428 service bock motor with the small distributor hole and the "428" cast into coolant jacket. It was a purpose cast 428 block. I'll take first hand knowledge over a book quote any day of the week..