I'm using Esso Supreme e-free 91 octane now. Ethanol gas rotted the fuel lines in a Poulan chainsaw and an MTD grass trimmer and the local chainsaw mechanic didn't have a clue why. Some research on the forums clued me in on ethanol and I avoid ethanol 87 now even though it's under 5% here. It's a long way to corn country. Later, a major blowdown had me looking for a bigger saw than my MS170 so some research indicated that the Dolmar 5105 was a far bit cheaper than the Stihl or Husqvarna equivalents for a small weight penalty. My servicing dealer is only 40 miles away and no big city driving. The 5105 requires 91 octane and the extra 15 cents per liter for 5 Imperial gallons ($3.40 cdn) for a summer's fuel is worth it. An ounce of Seafoam per gallon goes into the jug as soon as as I get home.
There are some Fords out there making that kind of power with factory heads. A Coyote has the record for the fastest Ford based engine, 3.87 @199 with factory heads. There is no domestic V8 capable of making the power a mod or coyote does with factory heads. MMR 351XR Modular Longblock [351XR] - $27,999.99 : Modular Motorsports, Home of the Worlds Fastest Modular Engines MMR Gen X 302X Billet Coyote Longblock [302X] - $29,999.99 : Modular Motorsports, Home of the Worlds Fastest Modular Engines
yeah it was definitely a blast working on those cars. His brothers car was a GN that went 3.84 on a 315 radial, though I only worked on that one when it was still an outlaw 10.5 car. The Mustang is a stock suspension car, it was originally built for NMRA SSO, then he took a several year break and went radial racing, before going back to SSO this year.
Car like that amaze me that they hook on such a small tire. Then there are guys running 10's on a 17'' slick and they spin sometimes That mustang is very impressive. Is a tube chassis with the factory shock towers welded to the tube chassis? I've never been to an NMRA event. I want to go to one. I saw some EFI Renegade cars running a few years ago. Then Charlie Booze used to bring his Hot Street car to the local track. Now there are few guys with sealed coyotes that come to the track. Those are fun to watch. The Chevy guys always say they are going to blow them up when they leave the line at 8,200RPM.
it truly is amazing how they can hook on such a small tire! The way the suspension works in them is amazing too. I've been next to the car testing once when it went something like a 1.11 60' and I dont think it even lifted the tires. When he went 6.83 it was dead slow to the 60 only went 4.50 to the eighth! low bottle pressure caused it to shift from first to third, and it pushed a head gasket out in the process too. It used to have the whole factory nose piece still in it, even the radiator support, which was NMRA rules. They just recently front halved it though.