Re: Engine rattle

Posted by Owen_Dyneto On 2008/12/20 15:06:25

Sounds like preignition to me. Check your ignition timing first, if it's OK, just use a higher octane gasoline, for example move from regular to mid-range. Some V8 Packards are more demanding on octane than others, my 56 Caribbean wants premium grade but most I've driven don't require it.

Sounds like your using your Twin Ultramatic in the higher performance mode; I'd suggest for longer trouble-free transmission life you not do that and use it in conventional mode of start on torque converter and a single shift into direct drive.