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81 f100 engine specs and questions

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Old 07-24-2005, 04:27 PM
jor jor is offline
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81 f100 engine specs and questions

hello.. i jus got a 81 f100 inline 6 4 spd and i was wondering if anyone knows the specs on it hp/tq and city and highway mileage, and good/bad comments about them... it seems like a dog going up, anything i can do to make it pull a little better.. i have a all forged 351w settin in the garage but i dont wanna put it in cuz it'll kill me on gas the way prices are..
thanks
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Old 07-24-2005, 06:51 PM
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I don't recall the specs for the 300 in a carbed form, but it can be made into a real monster for power. www.fordsix.com will fix you up in that end. Milage can be from 10 to 20.

Welcome to the forums! Next time post in the pre 97 forum too.

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Old 03-25-2015, 10:55 AM
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I am trying to find the specs for the bearing on a 1981 300 stright 6 4.9l

i am trying to find out what the mesurements on the bearings for a 1981 300 stright 6 4.9l i have to rebuild the one i got and dont have a owners manul because it is in a woods buggy..I need the factory info for it
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Old 03-25-2015, 11:03 AM
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Quote:
Originally Posted by jor View Post
hello.. i jus got a 81 f100 inline 6 4 spd and i was wondering if anyone knows the specs on it hp/tq and city and highway mileage, and good/bad comments about them... it seems like a dog going up, anything i can do to make it pull a little better.. i have a all forged 351w settin in the garage but i dont wanna put it in cuz it'll kill me on gas the way prices are..
thanks
Is this 4 speed the one with the low low 1st gear? Some people call it the granny gear.
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Old 03-25-2015, 11:05 AM
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the motor we got had a granny gear in it and if anyone cal please help me i would be greatly appcieated..

Last edited by Redneck girl; 03-25-2015 at 11:08 AM.
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