Quote:
Originally Posted by Excaliber
Ford never released any specific horse power numbers for the side oiler, but it's clear estimates of 400-450 horse were under rated by a bunch. Well in excess of 600 horse can still be done today using only period correct parts, not a single modern component is required.
|
This book spells it out on page 33 really well, 410 HP for the 4V and 425 for the 8V:
http://www.mustangtek.com/Library2/1...rfCatalog.html
Personally I do not think the numbers were under-rated, I think Ford was pretty accurate and Ole Shel was BS'ing for sure. I read where he said the 428CJ was rated at 335 HP and he said it was more like 500 HP. I ain't buying it. If a stock 1966 R-code 427 made the 425HP as advertised, that's about all it made. If anyone can tell me how to get more than 475 HP from an otherwise stock 8V non-stroked 427 c.i. side oiler with stock MR heads as came from Ford, lay it on me now.
Again, just my opinion based on my build.