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Mod | | | Forums66 Topics128,127 Posts1,056,680 Members48,452 | | Most Online14,466
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: Feb 2007 Posts: 385 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2007 Posts: 385 | I don't want to have my cylinder head rebuilt yet, so I'd like to make the valves last a little longer. Does anyone have a recommendation for a lead additive?
195? Chevy 3800 dump truck
1973 Chevy C30 cab and chassis
1987 Suburban 3/4 ton 6.2L Diesel
| | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | None. Unless you're working the engine really hard for an extended period you'll never have a problem.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Feb 2007 Posts: 385 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2007 Posts: 385 | That's what I like to hear. I can afford none. ;}
195? Chevy 3800 dump truck
1973 Chevy C30 cab and chassis
1987 Suburban 3/4 ton 6.2L Diesel
| | | | | Joined: Aug 2004 Posts: 1,067 Shop Shark | | Shop Shark Joined: Aug 2004 Posts: 1,067 | It takes awhile for the valve seats to erode. They WILL erode, but it might take 100,000 miles to get bad.
52 GMC 3/4 ton pickup
68 Big Block Vette
68 455 Firebird
| | | | | Joined: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | They WILL erode, but it might take 100,000 miles to get bad. I dont necessarily agree with that. So long as your not building a hotrod motor, there really shouldnt be problem for the duration of the engines life. I know theres plenty of vehicles still cruising on the roads today that havent had a problem and Id guess many of them are well over that 100K mile mark with no issues related to the valve seats. That being said I really doubt Ill ever put that many miles on mine.  | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | I don't agree either. I've put a LOT of miles on "leaded" engines using unleaded gas with no issues. I have read of folks having issues after converting to hard seats because a seat would come lose and trash the head.
Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.
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