VP to Sunoco reference
 

Is there a VP to Sunoco equivalency reference chart anywhere and typical tune changes between fuels?

Re: VP to Sunoco reference
 

Re: VP to Sunoco reference
 

Excellent reference chart. Thank you

Re: VP to Sunoco reference
 

Is VP C-10 Leaded or Unleaded?

Re: VP to Sunoco reference
 

C-10 is unleaded. (Now C-9 also unleaded)

Re: VP to Sunoco reference
 

Is there a leaded fuel with a lower octane (100 or less) out there that is NHRA Approved?

Re: VP to Sunoco reference
 

What you want to pay attention to is the SG and RVP of the different fuels. Similar specs on both will usually need similar jetting and perform close. If either deviate you will likely need to make changes. As far as lower octane than 100, what are you looking to lower octane for?

Re: VP to Sunoco reference
 

I have a 9:25.1 Compression Ratio Motor. It would run much more efficiently on a lower octane fuel than 110.

Re: VP to Sunoco reference
 

The best way to get the specs for race fuel comparisons is from each manufacturers web site. The specs change fairly often. The above referenced chart is out of date I believe. You'll want to pay close attention to the Motor Octane, and the RVP number.
Most companies also have a crossover on their web sites to make it easier to switch between brands.
And race gas for lower compression engines is available from a number of sources. Sunoco, Renegade, VP all make race gas for lower CR engines.

Re: VP to Sunoco reference
 

Mike,

Thanks, for the info ... What low CR gas is approved for NHRA /IHRA & what would you recommend for an 8 to 1 ???