Ticking Lifters On A '51

Posted by shadetree77 On 2017/9/10 21:50:46

Recently acquired an all original '51 300 with 327 5 main and Ultramatic. I've only driven the car a handful of times. Last few times I have driven the car, by the time I get home the lifters are ticking. It wasn't doing this when I bought it. Any suggestions as to causes and/or corrections? Do I need additives? Lead substitute for the gas?