rovermorris999
New Member
My 73 3500s has the 10.5:1 CR engine and is detuned to TDC instead of 6 degrees BTDC. It runs happily on unleaded or LRP. In the quest for maximum power (why else have a manual?) I'm thinking of using an octane booster to bring unleaded (or super unleaded) back up to 100 or 101 octane. I've found stuff called Tetraboost, which is the real McCoy, tetraethyl lead in solution, the same as used to be in leaded fuel. The question is...how much more power will be liberated going from TDC to 6 degrees BTDC? Is it worth the expense? I know the V8 doesn't require lead but I would like to have that nice grey deposit back in the exhaust after a long run!