Quote:
Originally Posted by bad64chevelle
1967 Chevy 427 L88-Rated 425--made 527
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That sounds right. I read somewhere that the L-88 dyno'd on another test at 535.
I had a RA IV 400 in my 70 'bird. It was faster than advertised, but not too much more. The 455SD was conservative, but that was also wen the emissions crap started weakening the motors a lot.