need 429 build
Cross-Country
Joined: Feb 2003
Posts: 62
Likes: 0
From: Washington State
What is the percentage of 91 octane to aviation fuel to make the right av-gas? Would that be dependant on solely on CR, or are there other factors to consider?
And yes, thank you for the detailed and valuable info!!!
And yes, thank you for the detailed and valuable info!!!
Elder User
Joined: Apr 2003
Posts: 821
Likes: 0
From: Normal, IL
I don't know where you're at, but here in IL, we have 100 octane turbo blue, at the pump, at the local gas station. It is unleaded, and works well on hot street engines. I see guys with corvettes from the sixties run it all the time.
Cross-Country
Joined: Feb 2003
Posts: 62
Likes: 0
From: Washington State
I have seen some special gas for sale in town where all the hondas fill up before they drag -- I assume this is the same stuff ? If it is just a matter of mixing in a gallon or two per tank, the aviation fuel would be easier for me to deal with.
Elder User
Joined: Apr 2003
Posts: 821
Likes: 0
From: Normal, IL
Yeah, and probably a whole lot cheaper. If i remember correctly, the effective octane of AV fuel is not as high as everyone thinks. It has been certified as nothing more than 87 octane gasoline. Youd be better off to go to the local short track or drag strip and get around five gallons of race fuel. It's gasoline, and you don't have to worry about Johnny Law getting involed if you're caught with the AV fuel. Just mix it the same as you would anything. And in all honesty, since the racing gasoline is ONLY $3.75 a gallon, you could possibly come away cheaper than AV Fuel, without the spark knock of the lower octane of the AV fuel.
Just my $.02.
Just my $.02.
Postmaster
Joined: Aug 2001
Posts: 2,882
Likes: 0
From: Nevada
We have 100-octane at the pump here, $3.79/gal. Avgas, it's rated at 100-octane here, is $1.69/gal. One distributor services the retail operations and private airport here. Off-roading is a major hobby here in the desert and there are always people filling containers at the airport. At 4-5mpg, it makes my grocery-getter more affordable. I tried mixing 91-octane with 100-octane at the retail pumps, but it took 3/4 100-octane to 1/4 91-octane to stop pinging at 14-degrees of ignition advance on a Comp 9000 mechanical with 36-degrees all-in.
Elder User
Joined: Apr 2003
Posts: 821
Likes: 0
From: Normal, IL
I was simply stating that at around 7 gallons of 114 octane racing gas, and the rest of the tank full of 91-93 octane, it shouldnt ping.
The 114 is all we can run in the big truck(473, 14:1 compression), and Sunoco 112 makes it run like crap.
The 114 is all we can run in the big truck(473, 14:1 compression), and Sunoco 112 makes it run like crap.
Postmaster
Joined: Aug 2001
Posts: 2,882
Likes: 0
From: Nevada
That would do it, but I'd still be hauling gas and I'm cheap, so I'll take the less expensive method. I looked at putting a small tank in, but the enviromental study and licensing process (no deliveries without the license) put that in never-never land.
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Senior User
Joined: Dec 2003
Posts: 109
Likes: 0
From: central illinois
george, usually the 100 octane rating an av gas is only 1/2 of the r/m method used to determine octane on automotive gas. when the whole formula is used, you end up around 92-95 octane, at least pump unleaded race fuel(100 octane) is the averaged method. to get the higher rating, you have to run the 106-110
AV gas, which puts the cost much higher. we buy our turbo blue buy the 55 gal. drum for under $200, and can mix at our own free will if needed.
mark
AV gas, which puts the cost much higher. we buy our turbo blue buy the 55 gal. drum for under $200, and can mix at our own free will if needed.
mark
Postmaster
Joined: Aug 2001
Posts: 2,882
Likes: 0
From: Nevada
I'll check with the airport guy again. There are a bunch of people here running his gas, cars and biles, and I haven't heard of any complaints. I've filled up a couple of times with the 100-octane pump gas and couldn't tell any difference between that and the off-road stuff other than the price.
Postmaster
Joined: Aug 2001
Posts: 2,882
Likes: 0
From: Nevada
We're fortunate in that respect, this is the mecca of 'tokes', local jargon for tips. The edge of a folded Lincoln is the best grease in the world. A Hamilton brings superior service.
The custom is so ingrained that most car dealers make it a firing offense for a service writer or service porter to accept a tip because the customer would expect to be put at the front of the line. Sin City.
The custom is so ingrained that most car dealers make it a firing offense for a service writer or service porter to accept a tip because the customer would expect to be put at the front of the line. Sin City.
Senior User
Joined: Dec 2003
Posts: 328
Likes: 0
From: Eastern Ohio
Originally posted by Rambomber
Now, with all that said, let's discuss a more budget friendly 429 build; something that would still go down the street, but light the tires up when necessary and turn 33 - 38" mudders quickly enough to keep them cleaning out and maintain enough rev's to stay in peak HP range. That is what I am interested in.
Now, with all that said, let's discuss a more budget friendly 429 build; something that would still go down the street, but light the tires up when necessary and turn 33 - 38" mudders quickly enough to keep them cleaning out and maintain enough rev's to stay in peak HP range. That is what I am interested in.
9.5:1 Compression
Edelbrock Performer Intake
Holley 780CFM Vac secondary
Double Roller Timing chain
Stock Port heads
Comp Cams Extreme Energy 4X4 Cam
Specifications:
* Advertised duration: 262 intake/270 exhaust
* Duration at .050 in. cam lift 218 intake/226 exhaust
* Gross valve lift: 514 in. intake/524 in. exhaust
* Lobe separation: 111 degrees
* RPM range: 1,400-5,600
Hooker Headers w/Hooker Muffs & 3" pipe
This motor is currently in a 1979 F150 4X4 LongBed w/C6 automatic, 3:50 gears w/locker and 35 Maxxis Mudders, in 2001, it pulled the weight sled at the truck pulls 231ft w/no bumper weights, from a dead stop it will light the tires up, on the road it will beat a dodge SS/T Ram in a stoplight race and blow it away from a 60Mph jump on it on the interstate, it pulled my 1990 EB Bronco home when I bought it with no heating/pinging etc problems thru the Eastern Ohio hills, and will run the speed pit at the mud drags in 4.5 secs with the transfer in Lo-Range. I am currently building a copy of it with the only difference being the 429 crank instead of the 460 for my F250