Lead substitute

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Jul 24, 2021 | 01:10 PM

Srnes1@aol.com

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Intermediate

Joined: Oct 2017

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Lead substitute

I have a 1969 350 350 hp and I always use tier 1 gas should I use a lead substitute also.

Jul 24, 2021 | 02:00 PM

Tampa Jerry

Le Mans Master

Joined: Aug 2005

Posts: 6,513

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From: Temple Terrace Florida

No need to add lead or a substitute unless you tow with your car or really drive it hard all the time. Do a search of the C-2 and C-3 forums for more information. Jerry

Jul 25, 2021 | 12:15 PM

Mrvettenick

Drifting

Joined: Aug 2019

Posts: 1,334

Likes: 225

Do you know if it had recent headwork? If so, there's a good chance there's hardened seats. If the car runs fine, and you're not putting a lot of mileage, Id stay away from any additives.

Jul 25, 2021 | 01:24 PM

Eric P

Drifting

Joined: Aug 2019

Posts: 1,506

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VP Racing Madditive Octanium with lead , also increases Octane too

Jul 25, 2021 | 02:28 PM

Mr D.

Team Owner

Joined: Mar 2002

Posts: 44,627

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From: Huntsville AL

You don't need lead or hardened seats. All you need is gas and drive it.

Jul 25, 2021 | 09:06 PM

HeadsU.P.

Le Mans Master

Joined: Aug 2017

Posts: 8,336

Likes: 2,809

From: Cool Northern Michigan

This has to be the biggest myth ever in automotive history. Millions of cylinders heads were threatened with damage to the seats. What will we do?

Here we are some 50 yrs later. Still waiting for some proof of damage..

Lead Substitute. AKA snake oil.

Jul 26, 2021 | 07:55 AM

Jebbysan

Dr. Detroit

Joined: Mar 2012

Posts: 10,095

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From: New Braunfels Texas

The only heads I have ever seen that had exhaust seat damage were off of a 1969 C60 Dump Truck with 300,000 mile son it that also had a PTO for some kind of pump....it would run for hours and days...so more like 600,000 miles on it......even then the seats were only down about .030-.040......

Put gas in and drive it as explained above.

Jebby

Jul 26, 2021 | 09:32 AM

titanc3

Cruising

Joined: Jul 2019

Posts: 12

Likes: 5

From: papillion, ne

This is something I worried about when I got my first classic too. After a lot of research, I found it best for me to use 90 octane gas with no eth. I also use high zinc oil such as Lucas hot rod & classic with high zinc. No problems.