Posted by 74merc (148.78.248.10) on May 13, 2001 at 13:19:10:
In Reply to: Re: hp/tq rating?? posted by Fastman on May 13, 2001 at 04:49:47:
68 2v 289 is rated 195 gross hp. thats without the alternator, ps, etc, tuned to the max at the flywheel.
in 72 the rating system was changed.
with full accessories on and running, a 1974 Maverick/Comet 302 has 138 net hp at the rear of the tranny.
take the 74 engine, run the same tune and setup and dyno it and it isn't that much weaker than the 289, although it has been neutered by Ford...
to simplify, the pre-72s gave best case scenario horsepower, the post-72s gave worst case scenario.
reality is somewhere in the middle.
: : just curious what the horsepower and torque rating was on my maverick. 302 v8. 74 4door.
: : thanks
: The 74 was rated at approx. 140 "net" HP and 240 ft. lbs. of Torque.
: The 72 was rated nearly the same, but the 72 had higher CR which means it's power output was probably a bit higher than that. 72 was 8.5:1 CR while the 74 was 8:1 CR, thus making the 72 a slight bit higher in reality even though they were rated the same, unless the 74's electronic ign. made up for the difference?
: But it is safe to assume "atleast" 140 HP and 240 ft. lbs. of Torque. Even a 289 2v was really capable of 150 flywheel "net" HP, so "I" believe the figure to be closer to around 155-165 "net" for the 302 2v from that era.
: Those were the "dog days" of the 302. Not until the early 80's would the 302 get power as it once had(68 302 4v, 69-70 BOSS).
: Someone once told me that the 72-up to 91 numbers were all RWHP and called RHP=road HP. Anyone know if this is correct? If so, then it would put the 302 2v 140 HP at the RW's. I am unsure if this is true though. Anyone care to comment?