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1978 351M Horsepower

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Old 01-16-2006, 04:15 AM
fordtruckman78 fordtruckman78 is offline
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1978 351M Horsepower

How much horsepower did a 1978 351M make straight out of the factroy if anyone knows that would be great because im trying to figure out what kinda horsepower my 351M is putting out.
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Old 01-16-2006, 04:16 AM
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they wre around 175-180
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Old 01-16-2006, 04:19 AM
fordtruckman78 fordtruckman78 is offline
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thanks i was searching all over the net trying to find it but couldnt. You wouldnt happen to know any sites that sell complete 1978 beds would you?
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Old 01-16-2006, 04:20 AM
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Old 01-16-2006, 04:21 AM
fordtruckman78 fordtruckman78 is offline
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thanks again
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Old 01-16-2006, 04:22 AM
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sure no problem.welcome to FTE
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Old 01-16-2006, 11:40 AM
Mil1ion Mil1ion is offline
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Sorry He is high.

The 351M handed out about 136 HP

The 400 was about 148 HP.
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Old 01-17-2006, 05:48 PM
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a 79 would be about the same wouldn't it? becaus i was wondering about the power output of that motor a well.
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Old 01-18-2006, 11:09 AM
77effie 77effie is offline
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in '77 351m hp = 161 and 400 = 173

any one have torque numbers ? i am trying to justify putting a built high output
.030 over 5.0 w/ performer carb and intake , frpp roller B-cam 1.7 roller rockers,forged internals ..stock numbers on this motor was 225hp and 300ft/lbs
in fuel injected form

Last edited by 77effie; 01-18-2006 at 11:24 AM.
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Old 01-18-2006, 11:18 AM
Mil1ion Mil1ion is offline
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Old 01-18-2006, 03:33 PM
77effie 77effie is offline
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i cant get that site @ work it is proxy filter
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Old 01-18-2006, 09:59 PM
willow_tree willow_tree is offline
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i dont know about you but those old motors might not of had high numbers but man would they cook and work hard day after day!
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Old 01-18-2006, 10:06 PM
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77 effie.
Copy and paste the url into the address bar and hit enter.
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Old 01-19-2006, 10:04 AM
77effie 77effie is offline
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still wont work , my company has the site proxy filtered ....

i know that a 400 had to make some monster torque
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Old 01-19-2006, 12:54 PM
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Did this work ?



Model Year


Engine ......Horsepower @ RPM
(SAE net, except '71)


Torque (ft/lbs)..... @ RPM

1971* .....400 (car only)

........260 @ 4400


1972.......400 (car only)

.........172 @ 4000..........298 @ 2200

1973.......400 (car only)

....171 @ 4000


1974......400 (car only)

170 @ 4000



1975.......351M (car only)

148 @ 3400



1975......400 (car only)

158 @ 3800



1976.......351M (car only)

152 @ 3400



1976........400 (car only)

180 @ 3800



1977.....351M (car/truck)


161 @ 3400



1977......400 (car/truck)


173 @ 3800 / 158 @ 3800




1978.....351M (car/truck)


152 @ 3400 / 156 @ 4000


Torque / 262 @ 2000


1978......400 (car/truck)

160 @ 3800 / 158 @ 3800

Torque / 276 @ 2000

1979.....351M (car/truck)

151 @ 3400 / 156 @ 4000

Torque 262 @ 2000


1979.......400 (car/truck)

159 @ 3800 / 159 @ 3800

Torque 276 @ 2000

Last edited by Mil1ion; 01-19-2006 at 12:59 PM.
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