Re: Final gear ratios for 5th, 6th, and 7th series Packards.

Posted by Peter Packard On 2024/3/21 0:57:56

Standard ratio is 4.69 to 1. Sports models were 4.38 to 1. In either case 50 mph is fine, 55 mph is pushing it and 60 mph sustained should be done only on the way to the engine rebuilders for new poured big ends. Compression ratio was 4.8 to 1 and quite high for the day. Peter T