Lower Octane Fuel
 

I was wondering why the NHRA doesn't allow/approve VP, Sunoco, etc to manufacture a leaded race fuel that is in the 95 to 98 octane range. I know in our situation with a 9:25:1 compression ratio motor, our car would run much more efficient on a lower octane fuel. There has got to be a lot of stockers out there that have lower than 10:0:1 CR and would also benefit from a lower octane fuel. I don't think it would be that difficult to check or am I wrong?

Re: Lower Octane Fuel
 

I am thinking the same.

VP C9 might be that fuel You & i need.

Re: Lower Octane Fuel
 

We use vp-C 9 in 4 cycl stocker. Works great.

Re: Lower Octane Fuel
 

What is the octane of the C9 and what does a 5 gal pail cost??
I just priced C10 in SoCal at $72-$82 a pail. Totally obscene!!
Two years ago it was $50 a pail out here.

Re: Lower Octane Fuel
 

I think it was like 53.00 a gal from VP last year, octane is 98.

Re: Lower Octane Fuel
 

Is the C9 VP Leaded or Unleaded?

Re: Lower Octane Fuel
 

We have a couple of '68 Chevelles with the 327/250-245 horse engine. that engine,even after decking the block and the heads and arriving at a comfortable chamber size, is an actual 8.5 c/r. It runs fine on 91 octane 76 union right from the pump. No real difference in Et or MPH is obvious from C-12. It probably shouldn't do this according to conventional wisdom, but Tony Janes did this when bracket racing the car. I always hunted down C-12 when I went out, but there's apparantly no need for 108 octane fuel in an 8:1 engine. Problem is, the 76 wouldn't pass fuel check, so when Pomona comes, out it goes and the good stuff has to go in. I don't think we would try this with the 275 horse engine.

Re: Lower Octane Fuel
 

My car @ 9.1 CR is .05 faster on Arco 91 pump gas then on the legal fuels VP C10 or Rockett 111. I believe that well over half of the stockers would run just fine on pump gas at $4.00 a gallon instead of the rip off prices we are forced to swallow for the $13.00 and up per gallon fuel on the "accepted" list. But I guess thats politics...............

Re: Lower Octane Fuel
 

VP C-9 is 97 octane Unleaded with NO Oxygenates.
As close as you can get to pump gas with NHRA approved fuel from VP.
It is cheaper (around $65 with the can) is all gasoline not as caustic as other VP Fuels.

Keep in mind it is unleaded, if using older heads without hardened valve seats you will have issues.

Re: Lower Octane Fuel
 

I use C-9 all the time. My car likes it better than the rest of VP's fuel. I have had my fastest pass with it. Just have to tune it a little. BP