Re: 20's Packard Engine Identification - newbie/advice

Posted by Owen_Dyneto On 2019/11/1 15:18:01

If you read Packard's booklet "Supplementary Information on Packard Eight 6-26 Speedster", it notes that the Speedster uses metric (18mm) plugs, all other 6th Series models used 7/8 NPT plugs. So apparently, if nothing else, you have a Speedster cylinder head.

Measuring the camshaft lift should be helpful in determining if it is a Speedster engine block.