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[C2] Lead additive

Old 04-23-2018, 08:17 AM
  #1  
JimE
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Default Lead additive

What, if any, fuel additive do you guys use in your small blocks?

Last edited by JimE; 04-23-2018 at 08:20 AM.
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Old 04-23-2018, 08:37 AM
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jim lockwood
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None at all. Zip. Zero.
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Old 04-23-2018, 08:53 AM
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I use Lucas top end Lube in the gas. Relatively Cheap and get it at my local Walmart. It may or may not do anything but it is mentally comforting. I'm sure it helps! RAQ
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Old 04-23-2018, 09:04 AM
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Originally Posted by jim lockwood View Post
none at all. Zip. Zero.
x2.
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Old 04-23-2018, 09:42 AM
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Frankie the Fink
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Originally Posted by RAQ View Post
I use Lucas top end Lube in the gas. Relatively Cheap and get it at my local Walmart. It may or may not do anything but it is mentally comforting. I'm sure it helps! RAQ
Just send me your excess cash and Iíll send you a weekly email stating, ďFeel comfort, relax, everything is OKĒ. Iíll even include background ocean wave sounds.

Your result will will be the same and Iíll be a little richer.
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Old 04-23-2018, 09:45 AM
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I add as much E 10 89 octane as the engine uses. advertised 11-1 compression. I'm sure mine is a little less than that. Stock factory timing curve.

I've read here on this forum that if you burn aeroplane gasoline or racing gasoline, it'll feel like you added a supercharger but my car doesn't need any more power to chirp the tires. Might break something if I tried and then I'd have to fix it.

I never bothered to install hard valve seats in my old heads either. They've go lot's of miles on them and the cast seats are still in good shape.

Last edited by MikeM; 04-23-2018 at 09:49 AM.
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Old 04-23-2018, 10:02 AM
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phil2302
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There is only one additive that actually is the same substance that used to be in leaded gas. It is tetraethyl lead. All the other stuff is bs and a waste of $. Not sure if its available anymore but even at that I stopped using it in my 66 about 20 years ago and the engine is strong as ever.
Only thing I add is some stabil in the winter because the car sits for a few months.
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Old 04-23-2018, 10:19 AM
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Nothing. And I don't have hardened seats either. No problems since I bought the car 18 years ago and driven over 30k miles.
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Old 04-23-2018, 10:36 AM
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Originally Posted by phil2302 View Post
There is only one additive that actually is the same substance that used to be in leaded gas. It is tetraethyl lead. All the other stuff is bs and a waste of $. Not sure if its available anymore but even at that I stopped using it in my 66 about 20 years ago and the engine is strong as ever.
Only thing I add is some stabil in the winter because the car sits for a few months.
It is still available (off-road use ) if you search a bit. But most of our cars can run pump unleaded unless highly modified.

But they do run a bit stronger with a razor tune and some 100 octane leaded in the tank.

Larry
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Old 04-23-2018, 11:01 AM
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Brian Kotula
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The real lead additive does help if you have a fuel percolation problem, my Fathers 68 big block (holley carb) Camaro was suffering fuel percolation until he added Octane Supreme 130. Also it does give the feeling of having a little more get up and go.
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Old 04-23-2018, 11:04 AM
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That would be great Frankie, But I'm keeping my cash.
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Old 04-23-2018, 11:09 AM
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Originally Posted by Brian Kotula View Post
The real lead additive does help if you have a fuel percolation problem, my Fathers 68 big block (holley carb) Camaro was suffering fuel percolation until he added Octane Supreme 130. Also it does give the feeling of having a little more get up and go.
Are you sure you are not imagining things?????



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Old 04-23-2018, 11:12 AM
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My SB is tweeked above factory specs and I run 89 all the time with zero issues.
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Old 04-23-2018, 11:19 AM
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Originally Posted by Bluestripe67 View Post
My SB is tweeked above factory specs and I run 89 all the time with zero issues.
Agree..........it can be done. Just need to pay attention and make sure you stay away from any detonation under load.



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Old 04-23-2018, 11:25 AM
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Originally Posted by Powershift View Post
Are you sure you are not imagining things?????



Larry
You can't imagine fuel percolation!!!! Not fun watching gas and vapor pour out the air horn on a Holley down onto a HOT engine!

Last edited by Brian Kotula; 04-23-2018 at 11:27 AM. Reason: add some info
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Old 04-23-2018, 04:46 PM
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Dont advise use of any Lead Sub. Used it years ago in the 67 . Discolored the rear bumpers
chrome.
Just use Non ethnol gas 89 or better
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Old 04-23-2018, 05:07 PM
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Originally Posted by Brian Kotula View Post
You can't imagine fuel percolation!!!! Not fun watching gas and vapor pour out the air horn on a Holley down onto a HOT engine!
How does a lead additive affect this problem?
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Old 04-23-2018, 08:55 PM
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Originally Posted by Frankie the Fink View Post

Just send me your excess cash and Iíll send you a weekly email stating, ďFeel comfort, relax, everything is OKĒ. Iíll even include background ocean wave sounds.

Your result will will be the same and Iíll be a little richer.
I have heard you preach this many times . I can send you notes from my mechanic on how long my motors last but i am sure you dont want to see them . Costs me $40 a year for mystery oil in the gas . A little extra lube is never a bad idea . I ll send you money when you send receipts for your motor repairs.
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Old 04-23-2018, 08:56 PM
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Waste of money. put it in your piggy bank!
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Old 04-23-2018, 09:06 PM
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Originally Posted by C2 Hot Cam Guy View Post
I have heard you preach this many times . I can send you notes from my mechanic on how long my motors last but i am sure you dont want to see them . Costs me $40 a year for mystery oil in the gas . A little extra lube is never a bad idea . I ll send you money when you send receipts for your motor repairs.
I donít use any of the additional goo and I guarantee you my engine stats will stand up to yours. Spend your money if it makes you happy.
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