Cant find it in my book, whats the stock horsepower of a 77 302 2 barrel, thanks :D
Im guessing 200 give or take a lil......

I'm telling ya, it's the mystery year. I can't find any hard numbers. I read up on the early bronco's awhile back, and I think one site said during the peak of the smog era, the bronco 302's only had 130HP. I'm not sure how reliable that is.

If I get the casting numbers off the heads, would that help?

130 HP sounds close. remember this is NET braking HP at the wheels vs the older Gross braking Hp at the engine.

Hell my 460 I had out of a stock '73 Mercury Marques was only rated for 205 Hp Net.:eek:

so 130 sounds about right for a '77 smog motor with 2V carb, Catilitic converters and single exhuast.:barf:

Eric

Originally posted by Alpo23
130 HP sounds close. remember this is NET braking HP at the wheels vs the older Gross braking Hp at the engine.

Eric

I totally forgot about that.

When comparing the older 302's to the later ones (pre 82) the bottom ends are exactly the same, correct? So the late 60's power houses had better heads, 4bbl carbs, and different cams..?? Weren't they pushing 240 gross? How would they rate net?

How big of a role do the cams play in smog?

Hmmm, Ill find out tomorrow, Ill call Skagit and find out, alot of info in the books there, all the manuals......

Dammit I edited my fawkin spelling error of stock and it didnt show, grr........:rolleyes:

Skagit what?

I'm reading this website right now, kinda cool.

http://home.pon.net/hunnicutt/history_windsor.htm

I meant the college, Ill call my old instructor up he's a Ford Nut , he wont need a book :D

Hey go here I think the answer will be here somewhere Im looking
http://www.broncohq.com/rmte-stock302.html

EEk...Ok I was waaaaaaaaaay off.........Doah...
MAybe add 20 for your headers......
Advertised engine specifications V8 engines



289 V8 engine
302 V8 engine

1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977

Horsepower @ rpm
200@ 4400
200@ 4400
195@ 4600
205@ 4600
205@ 4600
205@ 4600
141@ 4000
138@ 4200
140@ 3800
140@ 3800
134@ 3600
134@ 3600

Torque @ rpm (ft. lbs)
282@ 2400
288@ 2600
300@ 2600
300@ 2600
300@ 2600
242@ 2000
234@ 2200
230@ 2600
230@ 2600
230@ 2600
242@ 2000
242@ 2000

Bore x stroke (in)
4 x 2.87
4 x 2.87
4 x 2.87
4 x 3
4 x 3
4 x 3
4 x 3
4 x 3
4 x 3
4 x 3
4 x 3
4 x 3

Compr. ratio
9.3:1
8.7:1
8.6:1
8.6:1
8.6:1
8.6:1
8.5:1
8.3:1
8.0:1
8.0:1
8.0:1
8.0:1

Oil pressure @ 2000 rpm
35-55
35-60
35-60
35-60
35-60
35-60
35-60
40-60
40-60
40-60
40-60
40-60

Well that didnt paste the way I expected, but the 77 has 134 hp, here is the link.....
http://www.mmedia.is/~bronco/enginespecs.html
At least ya know now :D
Now onto the GI Bill :D

Now I see why I was so far off, that guy with the 289 In his Bronco 2 I was talking about, his was like a 66, which is 200 HP, a lil more compression and heads that breath, you could easily get 200, not that ya need it.....
That engine looks reliable as it gets dont mess with it !

Originally posted by The Chad
Well that didnt paste the way I expected, but the 77 has 134 hp, here is the link.....
http://www.mmedia.is/~bronco/enginespecs.html
At least ya know now :D
Now onto the GI Bill :D

I don't think that can be for all engines of a particular year though. Don't trucks and cars use different heads and what not?

my 74 was like 146 hp and 236 tq

notice where the Hp dropped from 205 to 141? Thats when the Hp rating changed. the engines are the same. just a different way to rate them.



The big change for cams was in the 70's when the factory started changing the cam timing by retarding the cam. this raised the torgue curve furthur up the rpm range. less low end power but better smog numbers.

Eric

one of my ford books it says

76-77 139 hp @3600 rpm
250 torque @ 1600 rpm
and it says the 77's had 8.2 compression ratio

For the record, the engine in question is my 77 granade 302 :nuke:

I've been told that the granada's had around 170 HP.

So Alpo, you're suggesting that the smog motors are actually not much worse than the older engines?

Originally posted by Nobody
For the record, the engine in question is my 77 granade 302 :nuke:

I've been told that the granada's had around 170 HP.

So Alpo, you're suggesting that the smog motors are actually not much worse than the older engines?

The smog motors are not what I'd call winners, but they are not bad.

What is different from the older enginges?

The drop between the 71 and the 72 engines is from the change in how it was rated, NOT in hardware.

Cam timing and EGR, and air pumps, plus the early Cats which were not very good for exhaust flow all added up to sap power.

Does your motor smoke the tires;) then good enough.

Eric

Yep it smokes the tires! :D And like chad says, it's a good motor, and I don't plan on messing with it.

Chad and I were discussing it earlier today. I actually thinks it's all pretty interesting.

Originally posted by Alpo23
notice where the Hp dropped from 205 to 141? Thats when the Hp rating changed. the engines are the same. just a different way to rate them.



The big change for cams was in the 70's when the factory started changing the cam timing by retarding the cam. this raised the torgue curve furthur up the rpm range. less low end power but better smog numbers.

Eric

What ya mean the "rating" just changed... They had different compression, and most likely different head cc's after 69 or whenever the hp dropped.....

Originally posted by The Chad


What ya mean the "rating" just changed... They had different compression, and most likely different head cc's after 69 or whenever the hp dropped.....

The Rating METHOD. One is measured at the flywheel and the other is measured at the rear wheels.

according to your chart from '66-'71 Hp varied by 10hp. then you have a 64hp drop. That's not hardware, thats how it gets measured. I'm not saying the Engines are not getting weaker. I'm saying it is not as dramatic as the numbers claim.
I also see that there must be a typo. the Torque numbers drop by almost 60 lbs/Ft. after the '70 model year yet the Hp. stayed at 205. this makes no sense, hp and torque are closely related.

Yes the heads got larger combustion chambers and the dish for the 2V enginges in the pistons got larger. hence the compresion ratio goes from 9.3 down to 8.0

The CR got less for smog reasons and by '77 good luck finding 100 octane fuel.

You can play with CR alot by messing with the Pistons.

The big drop in 'HP' happened with only .1 drop in CR. 8.6 down to 8.5. This does not acount for the 64 HP loss.

Bottom line is the '77 302 is still a good motor. Hell all fords are :D


Eric

So are there actually differences between truck engines and car engines of a particular year? Seems like people say truck heads are better.....bigger valves and what not. What about cams?

Im not sure on the truck/Car differences..... I really doubt it, I think the only diff would be 2v or 4v.....

And this rating change your talking about alps I have never heard of this b4... Got any stuff I can read up on that talkes about it? News to me.... Chad

I've heard of the rating change, but I'd also like to read up on it a bit.

I'm still searching for stuff online but take a look at this:

http://vintagecars.about.com/library/weekly/aa041198.htm?terms=horsepower

It helps explain a little.

Eric

were can i find info like this on a 460? i took it out of a 77 lincoln continental. but it has no emmisions now amd the cam and timing chain did away with the retarding. the only thing powered by belts are the alt and powersteering and flex fan. i put headers a cam ( 210/218 .487/.504),double roller timing chain, holley projection, and dual flowmasters and a edelbrock aluminum manifold. any guess on what hp or tq i am making?

Originally posted by Alpo23
I'm still searching for stuff online but take a look at this:

http://vintagecars.about.com/library/weekly/aa041198.htm?terms=horsepower

It helps explain a little.

Eric

interesting......thanks:usa:

Originally posted by yjtj
were can i find info like this on a 460? i took it out of a 77 lincoln continental. but it has no emmisions now amd the cam and timing chain did away with the retarding. the only thing powered by belts are the alt and powersteering and flex fan. i put headers a cam ( 210/218 .487/.504),double roller timing chain, holley projection, and dual flowmasters and a edelbrock aluminum manifold. any guess on what hp or tq i am making?



What type of heads are you running, thats what really matters....

Hey Chad, you ever check your PM's or your pirate email??

:flipoff2: (bastard)

lol..No...Sorry Dude :o)
Stop by I wanna hear that 460 :D