My 1969 Chevy Nova coupe

Powerglide, 250 straight six, Offenhauser intake, Holley 390CFM 4 bbl, stock everything else, single exhaust, piped to the tail pipe, no muffler.

My work in progress, been tuning the engine and have been getting it running pretty healthy.

Category:

Autos & Vehicles

Tags:

• Nova
• 250
• straight six
• straight 6
• inline six
• inline 6
• chevy
• 360 walk around
• 1969

[midnitesquirldog]

i just remembered mine had a 1 barrel carb looked like it came off a dirt bike it was good on fuel what mpg do you get with that upgrade?

[voodoochild69nova]

@midnitesquirldog

I'm still getting around 20mpg highway, I replaced the secondaries spring with a stronger spring, dont open up till around 2,700, so they dont ever open at highway speed by chance. I noticed after first replacing with a lighter spring my MPG went down the drain. Thicker spring seems to be just right, good power when needed and decent fuel MPG.

Killer little engine!

[midnitesquirldog]

@voodoochild69nova 20 mpg is great imagine if you had a 700r4 transmission or even 200r4 and 277 gears wow the mileage would be like 30 + mpg !! 

[voodoochild69nova]

@midnitesquirldog

Seriously! I dont get why people get all hyped up about 30-40mpg hybrids when technology as old as this could be tweaked and tuned to put out similar results...

Im thinking a little more get up and go with this ride, 4:11 gears, 12 bolt rear end, 700r4 so I could still make decent RPMs on highway. I heard that's a killer combo to get these 6 bangers to shine

[tylerlime]

My 69 nova gets 10 mpg.. original I-6, 250, 4-speed

[gkitchens1]

my 78 gets 40 mpg with the orig. carb. did your milage increase with the upgrade or go down?

[midnitesquirldog]

nice car i had 1 with a straight 6 and the fucker was still running great with 280,000 miles on it ! when i sold it for $400 i wish i had it still !!! i got a few classic cars check out my page ..