yup. There are a few different paragraphs on the subject. I have seen .63 and 5/8" so take your pick. The dowel itself is 1 inch long. It has to block (or not) an internal oil passage.

http://devestechnet.com/Images/ChevPartsAccessories1929to59.pdf

bottom of page 2


Deve

1950 Chevy 3100 Deluxe Cab
1950 Chevy 3100 Standard Cab
In the Stovebolt Gallery
The Think Tank
More info and tips at Deve's Technet