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-   -   Different fuels in low compression stocker (https://classracer.com/classforum/showthread.php?t=89820)

JCChildress 07-04-2025 10:31 AM

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 ?

GTX JOHN 07-04-2025 06:28 PM

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.

SS3860 07-04-2025 09:51 PM

Re: Different fuels in low compression stocker
 
I use Sunoco supreme in a low compression 350 Chevrolet

Tom Flowers
3860 E/SA

Dyno 07-04-2025 10:31 PM

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.

GTX JOHN 07-05-2025 03:52 PM

Re: Different fuels in low compression stocker
 
In our testing C25 has not been of any benefit on
our Stocker/SS cars for us.

Rose Racing 07-16-2025 06:18 PM

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

mnmaxwedge 07-17-2025 08:04 PM

Re: Different fuels in low compression stocker
 
Picked up about 8hp with C25 over C12. My engine is almost 14:1 though.

rsalemi 07-18-2025 08:27 AM

Re: Different fuels in low compression stocker
 
Quote:

Originally Posted by Rose Racing (Post 714429)
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.

Don Anderson 07-19-2025 01:04 AM

Re: Different fuels in low compression stocker
 
WE tried Sunoco 260 GTX. That is worthy for our 8.5 compression 302w.

west coast 07-19-2025 09:33 AM

Re: Different fuels in low compression stocker
 
Quote:

Originally Posted by rsalemi (Post 714467)
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.


I was using C9 when it was taken of the list. NHRA didn't say anything about taking fuels off the list but did say what fuels were added to list. Was a surprise to me that first race of the year that year, the track we were at had no fuel vendors at it. A friend lent me some C11 to get through that race. I talkeded to VP and all someone has to do is just ask for it to be put back on the list so I did haven't seen it back on the list yet maybe we need to call and email them again. I am at the Seattle national right now, will go over and get a contact info on who to talk to. Let's get C9 back on the list


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