'85 GW 360 Horsepower

[TPIGUY]

Anyone have a factory manual with the horsepower rating of the 1985 Grand Wagoneer's AMC 360 with stock 2 bbl carb?

Thanks,

TPIGUY

[rattletrap]

Here is the address under the Tech Library with what you want.
http://www.ifsja.org/tech/figures/engines.shtml



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87 Grand Wagoneer/Waggy
360/727
dana 44 frnt/rear
600 cfm edelbrock carb
edelbrock performer intake
2 1/4 dual Flowmaster
TFI ignition upgrade
and one new baby girl/Madison Elise, born 9-28-00

[TPIGUY]

Thanks for the link. According to the chart, my engine only has 129 HP? That's seems extremely low. Most 4 cyl have more HP than that nowadays. Oh well, thanks for the help.

[Mikel2]

<BLOCKQUOTE>quote:</font><HR>Originally posted by TPIGUY:
Thanks for the link. According to the chart, my engine only has 129 HP? That's seems extremely low. Most 4 cyl have more HP than that nowadays. Oh well, thanks for the help.<HR></BLOCKQUOTE>

Those are HP to the wheels. Back in the old days, power was measured at the flywheel, hence the mega horse power ratings.
My 78 Chief has a 360 4bbl and I would guess it has around 220HP. When the secundaries open it's a lot of fun! http://www.ifsja.org/ubb/smile.gif
Mikel

[WINGO]

<BLOCKQUOTE>quote:</font><HR>Originally posted by Mikel2:
Those are HP to the wheels. Back in the old days, power was measured at the flywheel, hence the mega horse power ratings.
My 78 Chief has a 360 4bbl and I would guess it has around 220HP. When the secundaries open it's a lot of fun! http://www.ifsja.org/ubb/smile.gif
Mikel

<HR></BLOCKQUOTE>

360
AMC
V8 / OHV
81-86
129
245
2bbl
Motorcraft



360
AMC
V8 / OHV
87-89
175
285
2bbl
Motorcraft

If all HP measurements were same why the big difference in HP between the '81 to '86 years compared to '87 to '89?

Thanks!




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WINGO
Vineland, NJ
USA
1984 GW 360
Rough Country/Heckethorn 2 1/4" AAL (actual lift)
Rough Country/Heckethorn Nitro 9000 Shocks
Performance Accesories 3 " Body Lift

Soon to Have:
1- Rhino Grill
2- Alis-Chalmers Orange & Black Durabark exterior paint.
3- 33" X 12.50" tires

[nograin]

TPIGuy,
If you hunt around, there were a couple of discussions on the HP ratings. I don't know all the details, but somewhere around 1970 (+/1 3 years) manufacturers had to standardize the ratings, instead of giving them at what ever rpm they liked. Then later on, they had to switch from advertizing the gross, to the net hp at the wheels. There may be other standards that were used too within those two.

There was also mention somewhere that the cam used in the 360 FSJ was changed at least once. Probly for EGR. If so, then becareful if you look to older data for comparisons.

OK. I found one of the refs. I was thinking of here. Looks like the cam changed. I wouldn't swear by the hp ratings here because a) the rpm is different, b) they might be using differnt hp rating methods as already mentioned. http://www.wagoneers.com/FSJ/tech/Engines/engine-specs-years-someinfo.txt

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360 auto select
body by beer (PO)
carries wood inside
no "wood" outside

[BobBarry]

<BLOCKQUOTE>quote:</font><HR>Originally posted by WINGO:
If all HP measurements were same why the big difference in HP between the '81 to '86 years compared to '87 to '89?<HR></BLOCKQUOTE>

They weren't all measured in the same way. You'll see three horsepower ratings for the 360/2-bbl after AMC switched to NET ratings in 1972:

129hp
144hp
175hp

All the things that make HP (compression ratio, cam, head design, valve size, carburetor size, etc) remained IDENTICAL from '72 to '91. So why three very different ratings for the very same engine (sometimes you'll see different factory ratings for the same engine in the same year)? I suspect it just was a matter of where they measured it (flywheel, tranny output shaft or drive wheels).

------------------
Bob Barry<UL TYPE=SQUARE>* '78 Cherokee 4-door
* '88 Grand Wagoneer[/list]http://studentweb.providence.edu/~rbarry/wheels/

[WINGO]

<BLOCKQUOTE>quote:</font><HR>Originally posted by BobBarry:
They weren't all measured in the same way. You'll see three horsepower ratings for the 360/2-bbl after AMC switched to NET ratings in 1972:

129hp
144hp
175hp

All the things that make HP (compression ratio, cam, head design, valve size, carburetor size, etc) remained IDENTICAL from '72 to '91. So why three very different ratings for the very same engine (sometimes you'll see different factory ratings for the same engine in the same year)? I suspect it just was a matter of where they measured it (flywheel, tranny output shaft or drive wheels).

<HR></BLOCKQUOTE>

Bobbarry:

I am going to research this point concerning HP rating of vehicle engines. It's my belief that all HP ratings were determined using a standard SAE rating and there was no deviations permitted in where the measurements are taken.

What's happening with the NE trail Ride?




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WINGO
Vineland, NJ
USA
1984 GW 360
Rough Country/Heckethorn 2 1/4" AAL (actual lift)
Rough Country/Heckethorn Nitro 9000 Shocks
Performance Accesories 3 " Body Lift

Soon to Have:
1- Rhino Grill
2- Alis-Chalmers Orange & Black Durabark exterior paint.
3- 33" X 12.50" tires

[nograin]

Go Wingo!
I looked at all my obvious sources but couldn't find that info. I know I've seen it, just can't remember where. Also doesn't help that most of my stock automotive references are from '70 and before.

I think the change from engine rating to net rating should be easy to find. I also want to say that ratings might have been brake (bhp) method, rather than a peak dynamic rating. Gosh I feel fuzzy.

Good luck and godspeed, etc.

[BobBarry]

<BLOCKQUOTE>quote:</font><HR>Originally posted by WINGO:
I am going to research this point concerning HP rating of vehicle engines. It's my belief that all HP ratings were determined using a standard SAE rating and there was no deviations permitted in where the measurements are taken.<HR></BLOCKQUOTE>

We're talking advertised horsepower here; I don't know that there are any strict requirements linking advertised hp to particular standards (it obviously has to be an actually-produced number, not something completely made-up). Since HP varies widely with rpm, throttle opening and point at which it's measured, I suspect that each of the advertised numbers are genuine.

The main reason I think they are all the power of the same engine, just measured at different points, is because the specs of the engines are identical, except for the rated hp. What would cause the 360 to gain 46 ACTUAL hp between '86 and '88? A timing change?

<BLOCKQUOTE>quote:</font><HR>What's happening with the NE trail Ride?<HR></BLOCKQUOTE>

Still planning it; no decision on final location. Just a month away, though! http://www.ifsja.org/ubb/smile.gif

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Bob Barry<UL TYPE=SQUARE>* '78 Cherokee 4-door
* '88 Grand Wagoneer[/list]http://studentweb.providence.edu/~rbarry/wheels/

[This message has been edited by BobBarry (edited February 05, 2001).]