1981camaro350

Hello Everybody I was just wandering from the factory stock with 425hp and with the 4.10 rear end posi what did that 69 Yenko get? Thanks everybody I was just curious what it would average in town and on the highway , not souped up just stock the way they came from the factory Thanks everybody D.J.

1981camaro350

When I ask what did they get, I meant for gas milage , sorry for the confusion everybody.

Villain281H

iTrader: (5)

mileage?? probably 7-9 mpg if they were lucky, and usually less b/c of the heavy right foot

MESS

iTrader: (5)

That sounds about right...... my '70 gets about 8 if I baby it.

Z-Convert

The 67 in my sig gets 6mpg around town and 8mpg on the hiway @ 55mph

badjuju342

iTrader: (3)

This is one of those instances that brings a phrase to mind: If you gotta ask how much it costs,then you probably can't afford it. If you can afford a Yenko , you probably aren't too worried about fuel economy.

Villain281H

iTrader: (5)

I've asked how much before (knowing I can't afford it) just so I can figure out what credit card I have room on...

Usually fuel economy and performance didn't go in the same sentence in the 60s or 70s, unless one had "lack of" preceding it.

Derek

Chevy454

iTrader: (1)

I'd say low-teens wouldn't be too out of line if you kept your right foot in check...especially if you left the ultra-enemic 68 jets in the primaries that came in the 780 Holley from the factory. My '98 SS woulda got crappy mileage had it not had an overdrive (or double overdrive since it's a T-56)...after I installed the 4.10s in my '98, I tried just cruising around in 4th one time, and it knocked my fuel mileage in the head.

When we had the 4.10s in our Yenko Camaro, we cruised the thing pretty regularly and for some good distances...55-60 wasn't too bad, and the mileage wasn't as crappy as you'd think. Especially considering the car was an automatic with power steering, and was a tad on the heavy side since it was a lower mileage original (from 3575-3600 pounds with under a 1/4 tank of fuel). When we put the 4.56s in it pretty much took care of a lot of the cruising, which was fine, because that has helped keep the miles down (it recently rolled over 30,000!). It seems to run pretty good with the 4.56s, though...

Villain281H

iTrader: (5)

That's the truth on a lot more than just the 69 Yenko! My Nova with a 3400 stall convertor, 3.73 gears and 750 HP dp Holley carb still gets 13 mpg on the highway at 70 mph @ 3500 rpm, but I'd sure like to see what that'd go to with EFI and a T56

Derek

Chevy454

iTrader: (1)

If you're jetting is close now, I doubt you'd see a big jump from just the EFI...but, that T56 is gonna help a TON!

BTW: how you like the HP carb? All of our stuff (so far) has required numbers matching stuff, but I've always wanted to try an HP or even a Demon and see what all the fuss is about...

Villain281H

iTrader: (5)

We had a dyno tuned 650 dp standard with just the choke-flap removed running 11.40's on my Nova, and swapping to the 750 hp OUT OF THE BOX netted a full tenth better et with another .5 mph, plus 8 more rwhp. Some might stay steep $600 price tag, but the carb works IMHO.

Derek

Renegade

iTrader: (1)

If you have the money for a 69 Yenko I don't think gas prices are a major concern for you. That's my dream car, hopefully I can own one someday... but unless the lottery numbers go in my favor I doubt it.