well let see 1996 Z-28 with a 540 Big block with 411 gears about 2 mpg
1979 Z-28 with 460 Big Block with 411 gears about 5 mpg
1988 Camaro with a 460 Big Block 456 gears about 4 mpg
That is mellow driving with restraint but hey I love to hear em run and rumble. Get on it and forget it!! If ya have to question the mileage maybe a big block aint for you!! Try the v-6.

 

WOW....that SUCKS

Ever been to the track in any of those???




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Track is about 60 miles away, then 60 miles back gets a little steep on the wallet. I will just no time yet, Im still payin the gas card off!!! Big Blocks are just fun to me so what the hell. The 96 runs 10's on motor and on the spray 9s but I think it will dip in the hi 8s if tweaked.

 

My 91 305 TBI DID get about 18 city, 26 hwy when I was nice to it, and all it has is a flowmaster exhaust and a 3"x14" round K&N open element air cleaner, and a 700r4 w/ shift kit. I've since then blown out the stock 273 gears from too much hard shifting and flooring it for 208k miles, and it's getting ready to be home to a set of 323s, so I imagine that's gonna take my mileage down a bit, but I gonna put a jet chip and a posi in there at the same time, so it might balance out. I'll let you know in a few weeks when the car is streetable again.

 

My 02 SS has bested 33mpg on all highway but on those days were I feal like having a lead foot 10-14mpg

 

1969 427 - 425HP 4 speed 4.10 gears - 11 mpg highway @ 60-65. '96 Z28 auto 3.42 gears - 21 mpg highway @ 70 mph.

 

I'm good for 7MPG on the highway are around 60MPH. with 3:73s and a 26" tall tire I will be just under 3 grand. I've hammered down before and got 73 miles out of a 16.5 gallon tank

big blocks are fun but you pay to play

 

my 305 is getting around 11 if i step on it and 13 if i drive like a grandma. if i am going to get bad gas milege regardless then i might as well get some agrenaline rushes out of it right?

 

Wow this is an old thread. If you found this by using the search congrats!