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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Apr 2005 Posts: 2,098 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,098 | I agree with Doug on this subject. Leaded gas was touted to add some lubrication to the valves which was supposed to make them last longer. I maintain numerous old cars & trucks for customers that have the original engines and they run fine. Several are driven to car shows from So Cal to Reno and las Vegas.
There was a article in Vintage Truck on this subject a while back. Essentially high performance engines could have problems with excessive valve wear. Most of the early 6 cylinders don't fall into this category. If your engine is going to be rebuilt and some of the seats have excessive wear, install the hard seats, otherwise leave it alone.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
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