What Fuel for the 440???

[poppatello]

Ok, I've never really cared about this the five or so years I've owned her because it spent most of it's time in the repair yard. I'm going to run her over today and see if she will pass inspection. Hopefully this time she does. I need gas though. What type should I put in it? To get her running I dumped anything around the house in it (old mower gas, 2 cycle gas). I am thinking Med grade but is regular ok? I'm pretty sure but not 100% that they would prefer high tes. What are you guys using???

[awarnes]

Without knowing what type of rig you have. I run regular octane gas in my 454. Nothing special. Most if not all engines are design to run the 87 octane gas. But for an extra 20 to 40 cents you can put the higher octanes

[JimElliott]

High octane will get through a "Smog" test in better shape...

Jim

[Hoverbug]

I the ninety's I had a '78 Winny with the 440.(my hotrod Whinny!) I put 5k on it using regular gas. I am a fan of Marvel Mystery Oil at 4 ounces per each 10 gallons gas. I have used it since I was a puppy. My vintage Burb still runs like new.
Happy Memorial Day everyone. Fly a flag. Remember our fallen and wounded Warriors.

[Wanabee FTer]

Quote:

Originally Posted by Hoverbug I the ninety's I had a '78 Winny with the 440.(my hotrod Whinny!) I put 5k on it using regular gas. I am a fan of Marvel Mystery Oil at 4 ounces per each 10 gallons gas. I have used it since I was a puppy. My vintage Burb still runs like new. Happy Memorial Day everyone. Fly a flag. Remember our fallen and wounded Warriors.

Marvel Mystery Oil is great stuff for older engines that were designed to use leaded fuel. The lead was added to lubricate the top of the cylinders, without it valve guides will fail prematurely. MMO will take the place of the lead in fuel, but not needed on newer engines that have cat converters. Newer engines use hardened valve guides, so additional lubrication is no longer required.

[73Indian]

Quote:

Originally Posted by Hoverbug I the ninety's I had a '78 Winny with the 440.(my hotrod Whinny!) I put 5k on it using regular gas. I am a fan of Marvel Mystery Oil at 4 ounces per each 10 gallons gas. I have used it since I was a puppy. My vintage Burb still runs like new. Happy Memorial Day everyone. Fly a flag. Remember our fallen and wounded Warriors.

I have put 15,000 miles on mine with the cheapest gas I can find and have used some MMO a few times. I have been told the '73 440 will take unleaded and some say no.

[Old Traveler]

I had 76 south wind 24',I burned reg.gas with no problem. It got at most 7MPG but I had all the power in the mountains I needed.

[Chuck 1935]

Quote:

Originally Posted by JimElliott High octane will get through a "Smog" test in better shape... Jim

Want to get through smog ? Get your fuel very low and add a gallon of TOLUENE, work great.

[JimElliott]

Quote:

Originally Posted by Chuck 1935 Want to get through smog ? Get your fuel very low and add a gallon of TOLUENE, work great.

X2
Plus it bumps up your octane also but I've found out from the many years of fuel mixing 8% is about the top we can use....Runs good tho.

Jim

[Chuck 1935]

Quote:

Originally Posted by JimElliott X2 Plus it bumps up your octane also but I've found out from the many years of fuel mixing 8% is about the top we can use....Runs good tho. Jim

In California we have to figure out all the angles to get past the smog nazies.

[LVJ58]

Don't know what year your engine is, but my 68 charger with the 440 required premium fuel.

[JimElliott]

Quote:

Originally Posted by LVJ58 Don't know what year your engine is, but my 68 charger with the 440 required premium fuel.

Jim, Those were the horse power race years

100 + Octane (leaded) was the norm, Gone but not forgotten.

Jim

[Chuck 1935]

What year is the Motorhome and is it 2 or 4 barrel carb. Also if you put Regular in it and it doesn't ping you are probably OK with regular. Once you know the year of the engine the rest is easy.

[LVJ58]

Quote:

Originally Posted by JimElliott Jim, Those were the horse power race years 100 + Octane (leaded) was the norm, Gone but not forgotten. Jim

Aaahhh Yes, how sweet it was