Approved fuel for low compression stocker
 

What would the best approved fuel be for a 9.5:1 dish piston 305 2bbl?

Re: Approved fuel for low compression stocker
 

Sunoco 260GTX at 98 octane.
Do not any of the others are lower.

Re: Approved fuel for low compression stocker
 

Most popular fuel is probably C11 in stock across the boards. That or c12.

Re: Approved fuel for low compression stocker
 

X2 for C11 with that compression in our Stockers.

Re: Approved fuel for low compression stocker
 

Dan

The Sunoco 260gtx is an unleaded fuel, similar to VP C-10, easier on the A/F wideband sensors esp for the late model and dual duty street/strip use cars, although most guys on here will use the leaded fuels (C-11, C12) etc. to extend valve train life and achieve higher octane ratings. Another issue is availability, a racers preferred fuel may not be sold at certain tracks... Thanks to MG raceway for posting this chart..


http://www.maplegroveraceway.com/wp-...-reference.pdf

Re: Approved fuel for low compression stocker
 

Run c-11 in my 81 305 dish motor . run about 3 hun.faster that c-12

Re: Approved fuel for low compression stocker
 

Yes 260GTX it is an unlead fuel and I like it !
I can find it and less expensive than C10.

RKelliher said that running C11 works better than C12.
How does is work that one Octane Fuel works better than another?

Dan

Re: Approved fuel for low compression stocker
 

Consistently, on a dyno, my engine makes 1% more HP with C11,
compared to VP110 or Sunoco Standard.
Terry K

Re: Approved fuel for low compression stocker
 

We also are faster with C11 than C12 in back to back testing
in our low compression Stockers!

Re: Approved fuel for low compression stocker
 

C-11 was designed especially for low compression stock and super stock applications. Its not always readily available so you have to plan ahead and get that fuel ahead of time. C-12 is much more readily available and a bit cheaper. Not as fast in the low compression engines as the C-11 but runs very well. To get full advantage of the C-11 it takes a jet change as I remember. I run C-12 in my super stocker

Re: Approved fuel for low compression stocker
 

C-11 makes the most power with my combo (dish 305). Tried them all!

Re: Approved fuel for low compression stocker
 

I’ve used mainly C12 (now using supreme Sunoco) and it always worked well in my p/sa 94 caprice 265 car... I never tried c11...

Re: Approved fuel for low compression stocker
 

I have (4) 5 Gal cans of C 11 that were purchased in Boise. If there's a Div 6 or 7 stock racer needing C11 for Mission or Woodburn I could have the fuel there. All 20 gals 300.00 $

Steve, 6380 STK. 206 799 1544

Re: Approved fuel for low compression stocker
 

If you have to mix fuels because of availability.
Are there any issues?

Can you run pump unleaded gas with the race fuel and be ok?

Dan

Re: Approved fuel for low compression stocker
 

Dan, you MAY fail a fuel check if you have TRACES of unleaded fuel in your container.
So in answer to your question, no.

Re: Approved fuel for low compression stocker
 

I run Sunoco Standard- 110. Ran some Sunoco Supreme- 112 and slowed down a .1 in eight mile. Tried the new Sunoco Surge (105) at bowling green, seems like it picked me up but have not done back to back and weather was a factor. Dished piston 305 2 barrel.

Re: Approved fuel for low compression stocker
 

That happened to me at last years SportsNationals. I did not fail, but was noted it was flat. Tech offered to check my jug, but I remembered what had happened then over the winter when some non-ethanol was mistakenly poured in the cell.

Re: Approved fuel for low compression stocker
 

Mixing fuels at an NHRA race is a No No. It will surely get you disqualified. Best is to always run the same fuel. I make sure I have enough fuel with me at all times. You cant always be sure to get what you need at the track. If you have to change for some reason make sure you drain the tank completely and then flush a bit of the new fuel through the system. This is the reason most run a small fuel cell in their cars. Makes it much easier to control the fuel issues.

Re: Approved fuel for low compression stocker
 

YEAH I still have the stock tank.
Have an 8 gallon tank made and will install later.
Need to add a drain.

The warning about mixing fuels.
Does that include mixing Sonoco, VP dissimilar rating approved fuels?


Dan

Re: Approved fuel for low compression stocker
 

Dan: Don't mix fuels, even if the colour is off they will fail it.

Re: Approved fuel for low compression stocker
 

Good information.
Which means what ever fuel I select to stock up..!

D

Re: Approved fuel for low compression stocker
 

C-10 is unleaded, 100 octane and it is an approved fuel.