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Classic Mustangs Tech Forum

Technical discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustang. Discuss all tech related to in-line six cylinder and V8 powered Vintage Mustangs here.

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Unread 10-11-2007   #1 (permalink)
TheGhost357 is offline Rookie

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Default 1969 Mustang & 1970 Mustang Gas Tank Differences, What are they?

I have a 1969 Mustang that has a rusted out tank. I see that the 1969 tanks are listed as being 20 gallons and the 1970 tanks are 22 gallons. Are there any other differences between the two? Will the bigger 70 tank bolt right in to my 69?
Thanks
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Unread 10-13-2007   #2 (permalink)
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Quote:
Originally Posted by TheGhost357 View Post
I have a 1969 Mustang that has a rusted out tank. I see that the 1969 tanks are listed as being 20 gallons and the 1970 tanks are 22 gallons. Are there any other differences between the two? Will the bigger 70 tank bolt right in to my 69?
Thanks

The '70 22 gal. tank will fit in the '69 Mustang. I have a '70 Mustang 22 gal. gas tank in my '68 Mustang that originally came with a 16 gal. fuel tank.
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Unread 10-15-2007   #3 (permalink)
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Thanks,
I ended up getting the 22 gallon one and after doing some more research on the subject, it looks like the bottoms of the tanks are almost the same and the only difference is that the tanks that have the higher capacity like the 20 and 22 gallon tanks, the top half of the tanks just rises up above the floof of the trunk three or four inches where the 16 gallon tanks bolt flush to the floor. Then you need to buy the corresponding sending unit along with the correct filler neck.
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Unread 10-15-2007   #4 (permalink)
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Originally Posted by TheGhost357 View Post
Thanks,
I ended up getting the 22 gallon one and after doing some more research on the subject, it looks like the bottoms of the tanks are almost the same and the only difference is that the tanks that have the higher capacity like the 20 and 22 gallon tanks, the top half of the tanks just rises up above the floof of the trunk three or four inches where the 16 gallon tanks bolt flush to the floor. Then you need to buy the corresponding sending unit along with the correct filler neck.
Pretty much, but I'd probably use your filler neck and tweak it to fit. If I had to buy a tank, I'd go for a '70 version, but my car came with a new tank 22mpg and ~260 miles per tank sucks!
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