Ford V8 HP ratings ?

quickstitch, Dec 12, 1:55am
Does anyone have the factory ratings of a 1969 429 V8, and compression ratio, i did have the manual with all the ratings but cant find it now. cheers

quickstitch, Dec 12, 2:04am
and compression ratio.

grangies, Dec 12, 2:06am

heads1st, Dec 12, 4:24am
320 hp10.5:12V
360 hp11.0:14V

trader_84, Dec 12, 11:59am
32HP for the standard models and 39HP I think for the NASCAR versions and a couple of factory lightweight Moostangs for Superstock. They achieved the ect (ect!) extra HP by using a higher compression piston in the left bank in pot No3 to effect a 'powerstroke' This is where they got the idea for the later 7.2TD decades later.

quickstitch, Dec 12, 1:45pm
cheers heads1st,. And thanks for the useful info trader 84. must remember to put a shorter sparkplug in that cylinder, dont want to have the pop up dome top piston smash the plug and close the gap

r15, Dec 12, 2:01pm
how did they make so little power from such a big engine!39hp isnt even enough for a decent dirt bike!

the-lada-dude, Dec 12, 2:09pm
QUICKSTICHwhat a shame you done too many trades you shoulda stopped at 429and not 492 .

quickstitch, Dec 12, 2:15pm
could alway go to 512 cubic inches, a stroked big block.

quickstitch, Dec 12, 2:16pm
john kaase makes his big block ford boss nine motors up to 800 cubes, so i can aim for that.

lookoutas, Dec 12, 10:57pm
The 69 4V 429 produced 367 hp.
The books are out in the shed, so that's off this screen in front of me.

plasticboys, Dec 13, 12:02am
alltorque and no hp

lookoutas, Dec 13, 12:52am
They don't need hp.

cuda.340, Dec 13, 12:57am
wow these are sad numbers, my trusty 340 although advertised ratings were 275 hp, all the engines came off the factory dyno at 320hp. thats nearly 90 cubes less.

the-lada-dude, Dec 13, 12:54pm
51 bhp / litre is not startling

lookoutas, Dec 13, 10:52pm
And the Boss 9 was a slow car!

lookoutas, Dec 14, 2:04pm
Funny how someone asks a simple question, and the old "My dads got a bigger one than your dad!" comes out.

I had a 327 Camaro that was quoted as poking out 350 hp, but I've since found out that was wrong. Then I brought a 351 Mustang that had to have the hp listed at 266 to satisfy new regulations. The Camaro was about a sec quicker over the 1/4, but after that the Mustang was far better.

These are cases where apples can't even be compared with apples.

whqqsh, Dec 14, 2:21pm
Ive had lower HP cars that put out great torque figures & really have punch & have also had & been in so called fast cars with big dollar big HP motors that just dont 'feel' powerful at all.
Id rather have torque to burn at low rpm on the road than HP figures on a dyno & I think thats where many misunderstand big blocks

bellky, Dec 14, 2:22pm
^ yep whqqsh - go the 460 :)

lookoutas, Dec 14, 2:31pm
Here ya go -

The 327 produced 250 - 350 hp depending on the carbs/intake.
The 305 was rated at 290 hp @ 3500 rpm off the factory floor (for insurance and racing reasons) But could actually crank out to 360 hp at higher revs.
Perhaps my 327 was running under the same bullshit, so it actually did crank out 350.

rob_man, Dec 14, 2:53pm
I had a big journal HP327 once, it was meant to be factory rated at 300 HP. So the story went anyway.

lookoutas, Dec 14, 3:00pm
Exactly

I've got a Subaru and a Mustang for playing with.
The Subaru would piss all over the Mustang on the open road, but when the Subaru hits a steep hill it changes down, up, down, screams, so I back off, and next thing you're doing about 80 k's to be kind.
The Mustang doesn't falter a bit, and with slight extra peddle it cruises over the top in hi cog, still at 100.

Sure - the Mustang probably wouldn't out scorch the Subaru if both were nailed. And I don't leave the Subaru in D on these occasions - it gets knocked down manually in order to maintain speed.