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Old 07-04-2025, 10:31 AM   #1
JCChildress
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Default Different fuels in low compression stocker

I'm sure this has been covered but since I'm looking to buy a Mopar with the low compression 340, I thought I'd ask.
What real world difference could a fella see either on dyno or on the track on a car with low compression, say going from some 110 to whatever else ( C11, C12 etc etc ) ?
Even on 110 gas......has anyone seen much difference between the various brands ?
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Old 07-04-2025, 06:28 PM   #2
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Default Re: Differenaftt fuels in low compression stocker

We run C11 in both our High Compression and Low Compression
340 Stockers/SS.

We have tried everything we could find and C11 was the faster
after tuning of any of them.
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Old 07-04-2025, 09:51 PM   #3
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Default Re: Different fuels in low compression stocker

I use Sunoco supreme in a low compression 350 Chevrolet

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Old 07-04-2025, 10:31 PM   #4
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Default Re: Different fuels in low compression stocker

Many fuels well be safe and sufficient to make good power, but VP C25 will always be best. But, also the most costly. Heads up only for many.
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Old 07-05-2025, 03:52 PM   #5
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Default Re: Different fuels in low compression stocker

In our testing C25 has not been of any benefit on
our Stocker/SS cars for us.
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Old 07-16-2025, 06:18 PM   #6
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Default Re: Different fuels in low compression stocker

I mean if I can get out at next weekend Buckeye race at Kuhnle I will have real world testing info on C10
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Old Yesterday, 08:04 PM   #7
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Default Re: Different fuels in low compression stocker

Picked up about 8hp with C25 over C12. My engine is almost 14:1 though.
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Old Today, 08:27 AM   #8
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Default Re: Different fuels in low compression stocker

Quote:
Originally Posted by Rose Racing View Post
I mean if I can get out at next weekend Buckeye race at Kuhnle I will have real world testing info on C10
Long time ago - when C9 came out I talked to VP engineers and they told me that C9 would be faster in my Jeep (9.5 CR) than C10 so I used it - even set a record with it! The next year I went to fuel check and was told that C9 was not on the approved list Sunoco was the Official fuel at that time. After a couple of weeks NHRA got back to me and said nobody was using it so they removed it from approved list!!! If it is back on the approved list I'd use the C9 in low compression motors.
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