I have a plymouth '38 P6 coupe with a
'48 Dodge 230. It develops full torque at 1200 rpm, just off idle. Pulls in third around town like a bandit. The car weighs 2800 lbs.
I use 20-50. good for summer and winter in Cal. The oil stays clean for a long time, and doesn't use much.
The chrysler flatheads are hard to beat. you can really lug them down. Great engines.
