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Send PMNORTON, OH - USA
Joined: 7/9/2012
Posts: 111
Vette(s): 1985 C4 red,
1985 C4 Black and dark gray
who makes the best ? my 85 is now11:1 it runs great on 94 but now &then I get some crappy fuel shell 93 is what I use most of the time with out a problem it loves CAM 2 and I love the way it smells If you have never drove a 475HP C4 try it its almost as good as sex LOL
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I don't have an answer for you about octane booster, but I am curious about your car. (I have an 85, as well, but it's stock.) What engine do you have in it? What mods have you done?
~Laurie~
1985 and 1995 coupes:
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R
Imo all auto store Octane Boosters are a rip off, not what they say they are.
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I have a guy that delivers fuel to where I work and he say's that N.O.S. in the black can is the only one on the market that will increase octane.
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22714
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Make your own octane booster: (this is the basic formula of one of
the popular octane booster products) To make eight 16 ounce bottles
(128 oz = 1 gal):
100 oz of toulene
25 oz of mineral spirits (cleaning agent)
3 oz of ATF/transmission fluid (lubricating agent)
This same concoction is advertised as "octane booster with cleaning agent and lubricating agent!.
(Diesel fuel or kerosene can be substituted for mineral spirits and light turbine oil can be substituted for ATF, but ATF(trans fluid) is prolly easier to find)
Toulene is the most common main ingredient of off-the shelf octane boost products....
100 oz of toulene
25 oz of mineral spirits (cleaning agent)
3 oz of ATF/transmission fluid (lubricating agent)
This same concoction is advertised as "octane booster with cleaning agent and lubricating agent!.
(Diesel fuel or kerosene can be substituted for mineral spirits and light turbine oil can be substituted for ATF, but ATF(trans fluid) is prolly easier to find)
Toulene is the most common main ingredient of off-the shelf octane boost products....
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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Free Member
Send PMNORTON, OH - USA
Joined: 7/9/2012
Posts: 111
Vette(s): 1985 C4 red,
1985 C4 Black and dark gray
laurie my motor started as a ZZ-4 bottom end with a comp. roller cam and rockers the heads came from Trick Frows R&D dept long tube headers series 50 flow master in place of the cat.it fit right in the spot the injectors (accel) smoked a hole thru no.7 piston after 90 miles then the air gap eldebrock and ultra 750 went on then the hood got cut now it has speed pro forged pistons a hays flywheel and clutch with a TKO 500 tranny my car could use a paint job it come from nashville and the sun has cooked the finnish it cranked 490 hp on the tuners dyno . I just found another 85 C4 towed it home friday (black) this one is gonna stay stock at least for now
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ZZ4 - nice motor, even stock. You've put a lot of great work into it. Looks like a real fun ride and I imagine you're having some good times with it!
Hope you enjoy the new stock 85. I do like mine. It's had a couple of issues to sort out, but nothing major, and certainly not unexpected. My husband and I are sure learning a lot, and it's been fun. The car is so very different from my 95, of course, even though they're both C4s.
~Laurie~
1985 and 1995 coupes:
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w
Free Member
Send PMNaples, FL - USA
Joined: 6/19/2011
Posts: 46
Vette(s): 1984 C4 Mild mods.85 fuelpump,Accel ignition, TCI, shiftkit, ramAir, Boshplat plugs, duels straight, VP 106 fuel mix, 1990 wheels,, Silver/Gray
1996 LT 4 Stock muffler eliminators Torch Red ZR1 Wheels
Anyone try VP??? I used it in my84. Had it up toabout 250HP now I use Shell they make an Octane booster in 5 gal cans. Car starts fast and runs great too.
Wingnut
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Free Member
Send PMNORTON, OH - USA
Joined: 7/9/2012
Posts: 111
Vette(s): 1985 C4 red,
1985 C4 Black and dark gray
Yes V P C4 its pro stock fuel and my red car loves it but its EXPENSIVE the last can 5 gal was 120 bucks
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w
Free Member
Send PMNaples, FL - USA
Joined: 6/19/2011
Posts: 46
Vette(s): 1984 C4 Mild mods.85 fuelpump,Accel ignition, TCI, shiftkit, ramAir, Boshplat plugs, duels straight, VP 106 fuel mix, 1990 wheels,, Silver/Gray
1996 LT 4 Stock muffler eliminators Torch Red ZR1 Wheels
I get it from the pump and bring a 5 gal can $9.00 gal. I used the 106 red
Wingnut
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in Forum: C4 HVAC, Fuel, Emissions, and Exhaust
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