Re: Plug Gap on 352 v8 to compensate for unleaded fuel????

Posted by Owen_Dyneto On 2009/2/6 13:08:25

Do i need to make any other adjustments,use additives,ETC in order to safely run engine on unleaded fuel??

0.028-0.030" in fine for flathead engines, but for my taste a bit too narrow a gap for the V8s. As to additives, if you're going to flog the heck out of the car on Interstates, I'd recommend using genuine tetraethyl lead, available from Jack Podell, or at the very least a lead substitute but I sometimes wonder if they're not just another "snake oil" with no benefit. If you're driving is occasional Interstate trips at about the legal speed limits, then I'd say no.