305 Gas Mileage, 1976-1979

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Apr 5, 2010 | 11:44 PM

cherrycj7

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Joined: Apr 2010

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305 Gas Mileage, 1976-1979

Hi all, just wondering what i should be expecting for the gas mileage of a 1976-1979 chevy 305. Any thoughts? I know that the 1980's ones get good gas mileage but wasnt sure about the 70's 305's. Thanks

Apr 8, 2010 | 12:16 PM

heartbeat_jr

1st Gear Member

Joined: Dec 2009

Posts: 172

From: alabama

not sure but did you say 80s get good gas milage my 84 c10 has a 305 in it all stock and it probably gets 8-10 miles a gallon

Apr 9, 2010 | 07:55 AM

cherrycj7

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8-10 is by far the lowest i have heard about the 305's. i have heard a lot of 16-18's and some into the 20's. no disrespect meant but are you sure its tuned up good?

Apr 9, 2010 | 04:59 PM

Saint Ebony

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March 2010 ROTM

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My '87 305 gets 24 mpg when I drive it, although granted it's fuel injected and a 3rd-gen car, so it won't be the same as a '76-'79.

Apr 9, 2010 | 10:16 PM

heartbeat_jr

1st Gear Member

Joined: Dec 2009

Posts: 172

From: alabama

well its got a holley carb i put on it and that helped it a little but not much and everything is set but its a beautiful truck and im only drivin it till the camaro gets out of paint

Apr 13, 2010 | 10:46 PM

2nd Gen Dan

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Joined: Jun 2009

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My 305 got about 16 to 18 before i swapped it out.

May 24, 2010 | 11:19 PM

79CamaroZkid28

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Joined: May 2010

Posts: 23

i have a 350 and i'm lucky to get 17 highway

Jun 1, 2010 | 10:09 PM

Mattyt16

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Joined: Jun 2009

Posts: 6

I have a 78 and i get around 17 on the highway. But I have a beefed up fan, so that dont help. I do have a highway rearend though so that can help out some.