Fuel

[SS427]

I buy Sunoco 110 by the 5 gal pails and mix it 50/50 with 89 pump gas. I am hoping it nets me around 101/102 but has been working great so far. Unfortunately, it went from $10.34 per gal early last year to $16 gal this year!

[seventieshow]

This is a bit dated but most of these places are still around.

http://azmustangs.com/racegas.htm

Some airports won't sell gas to walk ins, some will. The smaller the airport the better. 100LL avgas works well in old cars but will eventually be phased out.

[Lynn]

Originally Posted by seventieshow

This is a bit dated but most of these places are still around.

http://azmustangs.com/racegas.htm

Some airports won't sell gas to walk ins, some will. The smaller the airport the better. 100LL avgas works well in old cars but will eventually be phased out.

Say it ain't so!!!!

[x33rs]

I run the same 91 octane here in Arizona in all the cars.

The 69 Z with 11:1 compression my wife daily drives for the last 6 years and it's had nothing but 91 octane. My 70 Formula with 10.13:1 compression is the same and I drive that one nearly everyday myself.

We have a few other cars with high compression that also use nothing but 91 octane, one of them makes 724 hp on it, on motor alone.

When I built these engines I took steps to make sure the higher compression would live on the cat pee we have at the pumps by doing things like making sure the pistons are at zero deck for tight quench, degreeing the camshaft so intake valve opening is about .030-.035" more than exhaust at TDC overlap stroke, hardened seats, stainless valves, and a bunch of time, usually on a dyno, with tuning the carbs and dialing in a good ignition curve with proper vacuum advance etc....because I don't like to give up power either. Going through this isn't a cheap endeavor and may not be an option for those with survivor cars, but it's what I do to make these cars live with what's easily available while still maintaining what makes these engines so great.

I started building engines like this more than 20 years ago simply because mixing fuel had already started to become a problem and way too expensive even back then. I can't even imagine going through that now. Plus we drive our classics daily, everywhere. They have to run what ever I can find at the pumps.

[firstgenaddict]

Originally Posted by seventieshow

This is a bit dated but most of these places are still around.

http://azmustangs.com/racegas.htm

Some airports won't sell gas to walk ins, some will. The smaller the airport the better. 100LL avgas works well in old cars but will eventually be phased out.

YES it will be phased out HOWEVER the replacement will be AVIATION GRADE 100 octane no lead and ZERO ethanol. Which is great for muscle cars.
The ethanol blend in street high octane fuel is what is causing so many issues with muscle cars, it changes the RVP which leads to boiling fuel in the fuel bowls and ethanol also leans the airfuel mixture as ethanol has 1/3 fewer BTU's as the same volume of gasoline, computer controlled engine can increase the fuel whereas a carb has the jets it has...
For example from 71 -72 the LT1 carb jetting leaned from 70-71 with a 72 primary to 1972 with a 68 primary.
If you are already leaner due to emissions in your carb then running a "lean" fuel the carb will be even leaner and your engine will probably run a little hotter.

[bugsy]

Bugsy this is your second warning . Leave your political Qanon crap at home if you want to continue to be able to post on this site.

[JRSully]

I drive to this small airport not far from me, drive right onto the ramps and load up 3- 5 gal jugs of avgas. Works almost exactly any other gas station, Drop your card in, hit 15 gallons and you're done. I would never drive my car to the pump, just load the jugs. Compared to race gas, it can be half the price. The L78 loves it, and it never goes bad. I have the timing all in just before 3k so you need to be careful with octane

[WILMASBOYL78]

Originally Posted by JRSully

I drive to this small airport not far from me, drive right onto the ramps and load up 3- 5 gal jugs of avgas. Works almost exactly any other gas station, Drop your card in, hit 15 gallons and you're done. I would never drive my car to the pump, just load the jugs. Compared to race gas, it can be half the price. The L78 loves it, and it never goes bad. I have the timing all in just before 3k so you need to be careful with octane

Yeah, but you're at sea level All those big block cars run better closer to the ocean...the salt air adds power

Stay warm tonite...wilma

[Xplantdad]

Any of the RideNow Powersports stores should have 5 gallon cans of VP 110 racing fuel available in the parts departments (RideNow Chandler is off of Gilbert Rd and the 202 )

• 2677 E Willis Road Chandler, AZ 85286
• Phone: 844.866.2677

[Pro Stock John]

Shouldn't have to run straight 110 unless you are running a lot of timing. I'd try a 2:1 ratio to start. Maybe check if you can find VP, Sunoco in 5 gallon pails from a local speed shop.