Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


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20 gallons or 16? My original 60 Impala service manual says the capacity is 20 gallons yet all of the repop tanks I see are 16 gallons. Can anyone explain why and or how this happened?
Thank you
Michael

Wilwood Engineering1955-1957

Willwood Engineering

Wilwood Engineering designs and manufactures high-performance disc brake systems.
Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188


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The GM factory tank was 20 gallons.
Can not explain what the repops were thinking. willy


Gene Schneider
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Based on Imperial Gallon vs the USA gallon? The USA gallon is smaller by about 16% I think so 20 USA would be 16.X Imperial gallons...

Many of us have grown up using Imperial so the USA gallon is strangely small. Our cars get better MPG up here.

Last edited by canadiantim; 08/07/20 10:42 PM.

1938 Canadian Pontiac Business Coupe (aka a 1938 Chevy Coupe with Pontiac shaped front sheet metal - almost all Chevy!)
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Thank you gents, thats a bummer. Is there a benefit to a zinc coated tank?

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Zink (tin) prevents rust. Chevrolrt used a special alloy to prevent rust. Modern plastic tanks are the best.


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Originally Posted by solafide
20 gallons or 16? My original 60 Impala service manual says the capacity is 20 gallons yet all of the repop tanks I see are 16 gallons. Can anyone explain why and or how this happened?
Thank you
Michael

The reproduction steel tanks are 20 gallons. The station wagons have a different tank and is 16 gallons. The original tanks were galvanized and the zinc coated tanks don't have the same finish as the originals.


John



1954 Belair Sport Coupe
1960 2 door Impala Hardtop 348/340HP 4spd
1962 2 door Impala Hardtop 409/409 4spd
1962 2 Door Biscayne Sedan 327/250 Auto
1977 Monza Mirage 305 4 Speed
1988 Celebrity Wagon
2018 GMC Sierra 2500 HD Diesel

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