Lou Earle Posted April 26, 2009 Report Share Posted April 26, 2009 60 Desoto valve seats-Hardened?? I know flathead seats were hardened but Do not know about the 60's stuff. If not hardened what addative? Quart of oil to 20 gallons?? I had friend that did that to his chevy van- Damned thig ran forever- kept mosquitos down to. Lou Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted April 26, 2009 Report Share Posted April 26, 2009 The Mopar Performance book chapter on the early B & RB engines says: If you are restoring your old muscle cars engine for modern road use you will need new valve seats as these old engines DID NOT have hardened valve seats. Mopar performance does indeed sell three popular sizes for these engines...and the largest 1.88 vlave IS NOT recommend for the B engine as it results in lost power. Get the smaller seat of 1.74 (stock size in your 60) and should you ever adventure to a bit of engine hop up..the 1.81 exhaust valve can be used by opening up the 1.74...sold 8 to the package.. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.