Author Topic: 110 Octane Sunoco ?  (Read 8130 times)

oldcanuck

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110 Octane Sunoco ?
« on: March 19, 2020, 07:41:52 PM »
What is everybody running for fuel in their 289s and 428s ?

I haven't had much luck yet finding the right octane booster..... but today ran 50/50 pump 93 and Sunoco 110 leaded race fuel so in essence the mixture was 101.5 octane with some lead and netted excellent results. It was noticeably happier.  I don't mind doing this once in a while.... it would get a little expensive if it were a full time habit, but I just wanted to know what you guys are using and what kind of results are you seeing.

Thanks.

BG
Bob
Knoxvegas, TN

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Re: 110 Octane Sunoco ?
« Reply #1 on: March 19, 2020, 07:51:59 PM »
I do what you do. VP or Sunoco. 110 with 93 or straight 110.  It runs like a different car on the race fuel and the slightly rich idle from the dual quads doesn't bother you. I also noticed the fuel percolation issues went away with the race fuel.

427heaven

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Re: 110 Octane Sunoco ?
« Reply #2 on: March 19, 2020, 07:57:13 PM »
That's a loaded question... Most street engines running less then 10 to 1 compression ratio run just fine on pump gas. When you head on over to your race gas dealer he will have many choices for you! For starters they will ask what you have, nitrous, blower, turbos, high compression pistons etc. This will eliminate many choices if you don't fall into those categories. Next will come how do you drive your car? Do you want to race it, constant high rpm use, street performance, leaded , unleaded, oh my head is spinning. 100 unleaded is a good starting point for most street cars. VP- TRICK - SUNOCO all good stuff!

s2ms

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Re: 110 Octane Sunoco ?
« Reply #3 on: March 19, 2020, 08:21:41 PM »
A local co-op that carries ethanol free fuel just started carrying VP 110 leaded.  Definitely going to give it a try in the 66...
Dave - 6S1757

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Re: 110 Octane Sunoco ?
« Reply #4 on: March 19, 2020, 08:35:48 PM »
The best I can do at the pump in this area is 91 ethanol free. The other best I can do is 110 leaded. It helps, but it is not what it should be. I am hoping this summer I can find better.

I think Watkins Glenn may have some good stuff, but that is over an hour drive, no point in going up unless I take several cans and fill them up. Too bad, because if is a fun drive with the exception of the roads! LOL
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EdwardGT350

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Re: 110 Octane Sunoco ?
« Reply #5 on: March 19, 2020, 09:06:36 PM »
here in cali, 91 ethanol burns black and sooty exhaust whereas the 110 leaded sunoco is charcoal gray on the exhaust tips. but expensive
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Bigfoot

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Re: 110 Octane Sunoco ?
« Reply #6 on: March 19, 2020, 09:29:20 PM »
The best I can do at the pump in this area is 91 ethanol free. The other best I can do is 110 leaded. It helps, but it is not what it should be. I am hoping this summer I can find better.

I think Watkins Glenn may have some good stuff, but that is over an hour drive, no point in going up unless I take several cans and fill them up. Too bad, because if is a fun drive with the exception of the roads! LOL

Just bring some cans. As many as you want.
Itís available at the track,....probably off limits unless ur there for an event, but one of the gas stations on the way in did carry race fuel and Iím sure still does. On route 14.
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Re: 110 Octane Sunoco ?
« Reply #7 on: March 19, 2020, 09:30:28 PM »
93 pure gas does well in my 427, haven't needed additional octane. A small amount of Avgas 100LL would bump the octane if you felt you needed it, but the excessive lead in Avgas would not be good in the long term. There are plenty of octane booster's out there, but since I don't need them I haven't researched them.

Bigfoot

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Re: 110 Octane Sunoco ?
« Reply #8 on: March 19, 2020, 09:31:00 PM »
All of my cars I run 93 except the 55 Chevy and the B9 which run 110/112
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The Going Thing

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Re: 110 Octane Sunoco ?
« Reply #9 on: March 19, 2020, 09:34:14 PM »
The best I can do at the pump in this area is 91 ethanol free. The other best I can do is 110 leaded. It helps, but it is not what it should be. I am hoping this summer I can find better.

I think Watkins Glenn may have some good stuff, but that is over an hour drive, no point in going up unless I take several cans and fill them up. Too bad, because if is a fun drive with the exception of the roads! LOL
It's not that bad. 13 to 86 to 14.. You just get hung up behind either old people in no hurry, deer dodging or tourist in the Glenn or visiting the gorge.
I am not sure which one is the worst..lol

Side-Oilers

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Re: 110 Octane Sunoco ?
« Reply #10 on: March 19, 2020, 10:33:34 PM »
here in cali, 91 ethanol burns black and sooty exhaust whereas the 110 leaded sunoco is charcoal gray on the exhaust tips. but expensive


Yep, and I love the smell of the 110 leaded race gas.  It's even fun to just fire the car up in the garage (with the garage doors open, of course.)

Both of my stroked 427s love the higher octane.  The only downside to running leaded 110 in the cars when merely street driven (other than the $/mile equation) is the possibility of fouled plugs.  In my experience, the "good stuff" us best utilized when you can really romp on the car for quite a while...like a track day. 
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1970 Ranchero GT 429
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oldcanuck

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Re: 110 Octane Sunoco ?
« Reply #11 on: March 19, 2020, 10:56:22 PM »
Thanks guys, all good info. Anyone found an octane booster that works well and / or they like ?

BG
Bob
Knoxvegas, TN

427heaven

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Re: 110 Octane Sunoco ?
« Reply #12 on: March 19, 2020, 11:28:04 PM »
Toluene- at the hardware store. Thank me later... ;)

Bob Gaines

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Re: 110 Octane Sunoco ?
« Reply #13 on: March 19, 2020, 11:37:28 PM »
Toluene- at the hardware store. Thank me later... ;)
I tried Toluene at the hardware store and it didn't work out for me.  I don't know if this is the best alternative out there but I have used Octane Supreme (just google the name)for years and have found it works good for may situation.
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s2ms

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Re: 110 Octane Sunoco ?
« Reply #14 on: March 20, 2020, 12:59:37 AM »
If I'm in a situation where there's no EtOH-free fuel around I use Klotz KL-602 octane booster/stabilizer.
Dave - 6S1757