Didn't Believe It
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Junior User
Joined: Sep 2004
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Didn't Believe It
Well I just made my 1700 mile trip from CA to NE with my 68 F100. I decided to track my mileage just to see how the new Holly performs and coming thru the salt flats at 65-70 I got an oustanding 18 MPG. I about fell outta the seat. I didnt know the truck had it in her. ( 360 w/ C6 ). After that if varied due to my heavy foot just wanting to get home! But I still averaged an overall of 15 MPG. Anyone else have such luck? Just curious.
Post Fiend
Joined: Jul 2004
Posts: 8,786
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From: Northern California
my old 72 390 I had got 15, which I found amazing myself. Got six when the four barrels were applied. Actually see the gas guage drop as you watch.
I had a 73, 302 that also got 15mpg
My 1981 300 gets 21.
I had a 73, 302 that also got 15mpg
My 1981 300 gets 21.
Moderator
Joined: Dec 2003
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From: Saskatoon, Saskatchewan
That is real good for a 360. I didn`t get quite that good but mine were never tuned up that well. I might get 18 or so with my 69 F100 with a 302 C6 but it has some what lower rear set of gears. Don`t want to find out and get all depressed about it. 
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
Originally Posted by MacOffutt
Well I just made my 1700 mile trip from CA to NE with my 68 F100. I decided to track my mileage just to see how the new Holly performs and coming thru the salt flats at 65-70 I got an oustanding 18 MPG. I about fell outta the seat. I didnt know the truck had it in her. ( 360 w/ C6 ). After that if varied due to my heavy foot just wanting to get home! But I still averaged an overall of 15 MPG. Anyone else have such luck? Just curious.
John
Cargo Master
Joined: Sep 2004
Posts: 2,690
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I finally took my 72 w/360 out on the highway for a long weekend. This was the first time she ran at 75 for long periods. I got 15 mpg for the first time ever. I had been getting 11-12 around town. I've rebuilt my carb but it still leaks from the butterfly shaft. It's just old. I wonder if a new one would do better.
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zstyle01
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