Horsepower History: Mustang Power Numbers Through the Years - MustangForums.com


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Old 08-14-2015, 02:23 PM   #1
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Default Horsepower History: Mustang Power Numbers Through the Years



There's much to learn about the Mustang from taking a peak at the pony car's history of horsepower.

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Old 08-14-2015, 03:18 PM   #2
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Isn't there a difference in how they measure hp now as opposed to the 60's? Now they have to be rated at the flywheel with all accessories and manifolds in place, whereas I believe formerly they could take all that stuff off and measure the hp on a test stand.

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Old 08-14-2015, 03:28 PM   #3
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pretty sure the I6 and smaller v8s in the 60s werent making 250 hp.

170ci - 101hp
200ci - 120
250ci - 155 in '69 and rerated at 88 in '72 (lol)
289ci - 200hp (225 in HiPo)
302ci - 220hp (250 with 4 barrel)

Its a cool infograph but not accurate.
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Old 08-14-2015, 07:28 PM   #4
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Quote:
Originally Posted by 67LimeCoupe View Post
pretty sure the I6 and smaller v8s in the 60s werent making 250 hp.

170ci - 101hp
200ci - 120
250ci - 155 in '69 and rerated at 88 in '72 (lol)
289ci - 200hp (225 in HiPo)
302ci - 220hp (250 with 4 barrel)

Its a cool infograph but not accurate.
I don;t nowabout the rest of them but I'm pretty sure the 289 cobra ran 271 hp
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Old 08-14-2015, 09:59 PM   #5
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A lot of people mistake the 225 HP A code 289 as the Hipo. The 225 hp was the standard GT engine with 4bbl but not the HiPo
The HiPo was the K code and was 271 hp in the Mustang with apx 306 hp in the Shelby Cobra and GT 350 and a bit more in the R models. These are actually pretty rare considering how many mustangs were made in 65, 66 and 67, but very few K codes. Plenty of A Code 225 hp and C Code 210 hp 289s.
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Old 08-18-2015, 12:06 AM   #6
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Starting in 1972, h.p. ratings where S.A.E. net, measured at the rear of the transmission, with all accessories installed and operating.

The original engine in my old 73 Mach 1 was a "M" code 351 Windsor rated at only 164 h.p, for comparison the same 351 Windsor in 1971 was rated @ 240 h.p.

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Old 08-18-2015, 09:41 AM   #7
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Yes this graph should transpose them all into SAE Net or Gross HP ratings. The new 2015 mustang would be easily over 500HP if they used Gross HP ratings.
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Old 08-26-2015, 02:33 AM   #8
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Interesting. I'd also be interested in the Mile Per Gallon throughout the years, to see how that's ebbed and flowed.
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Old 01-06-2016, 08:03 PM   #9
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Quote:
Originally Posted by MtnMustang View Post
A lot of people mistake the 225 HP A code 289 as the Hipo. The 225 hp was the standard GT engine with 4bbl but not the HiPo
The HiPo was the K code and was 271 hp in the Mustang with apx 306 hp in the Shelby Cobra and GT 350 and a bit more in the R models. These are actually pretty rare considering how many mustangs were made in 65, 66 and 67, but very few K codes. Plenty of A Code 225 hp and C Code 210 hp 289s.
I know old thread, but I just have to chime in, I have a 14 3.7 with tune and catback , BUT remembering my friend back in 1970(i know along time ago)Who had a 289 cobra 67, fairlane , I know you didnt think they put Cobras in lesser models , but they did, but it was a plain jane and it was soo fast . Anyway those engines were so torqued out, even tho I'm running 30 more HP in mine, I just couldnt see me beating him in the quarter
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