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Old 06-04-2018, 10:24 PM   #1
jmoneyfoot
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Default Approved fuel for low compression stocker

What would the best approved fuel be for a 9.5:1 dish piston 305 2bbl?
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Old 06-04-2018, 10:47 PM   #2
Dan Fahey
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Default Re: Approved fuel for low compression stocker

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Originally Posted by jmoneyfoot View Post
What would the best approved fuel be for a 9.5:1 dish piston 305 2bbl?
Sunoco 260GTX at 98 octane.
Do not any of the others are lower.
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Old 06-04-2018, 11:57 PM   #3
Mepprecht
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Default Re: Approved fuel for low compression stocker

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What would the best approved fuel be for a 9.5:1 dish piston 305 2bbl?
Most popular fuel is probably C11 in stock across the boards. That or c12.
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Old 06-05-2018, 12:44 AM   #4
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Default Re: Approved fuel for low compression stocker

X2 for C11 with that compression in our Stockers.
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Old 06-05-2018, 08:20 AM   #5
Steve Stickel
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Default Re: Approved fuel for low compression stocker

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Originally Posted by Dan Fahey View Post
Sunoco 260GTX at 98 octane.
Do not any of the others are lower.
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
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Old 06-05-2018, 10:22 AM   #6
RKelliher
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Default Re: Approved fuel for low compression stocker

Run c-11 in my 81 305 dish motor . run about 3 hun.faster that c-12
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Old 06-05-2018, 10:33 AM   #7
Dan Fahey
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Default Re: Approved fuel for low compression stocker

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Originally Posted by Steve Stickel View Post
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
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
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Old 06-05-2018, 11:35 AM   #8
terry1
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Smile 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.
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Old 06-05-2018, 12:57 PM   #9
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Default 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!
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Old 06-05-2018, 02:16 PM   #10
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Default 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
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