Quote:
Originally Posted by ponyakr
Main advantage the 428 had was that it had more compression than the '71-up 455's.
I think that 390hp 428 may have been a little overrated, or the 360hp GTO 455 engine was underrated.
But, some do like the compromise 4" stroke of the 428. Something for everybody.
One of those #64 head 455's, with no change except an 041 clone cam/Rhoads lifters, ran 12.40's in my '68 Bird bracket car. The Bird had 3.55 gears & a stock 13" converter. I think the 455 had around 75-80K miles when I got it. Had never been apart. A lifter had come apart. Owner thought engine was about to blow. So, he paid me to replace it with a junkyard 400, & he gave me the 455. Got a real good deal on that one. Ran it in 3 different bracket cars. We won lots of races with it. Never ran a 428 on the strip. 455's were much easier to come by, back then. LOTS of early '70's big Pontiacs came with one.
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Check out Post 182 of this thread. A 428 setup like this would possibly make even more power with a 744 or ra iv cam.