Hey,1955-Chevy-6400! I hope you get as much enjoyment out of your truck,as I get from working on (and improving) mine! I have a 1955 Chevy 2nd-Series 6500 box and hoist,although it started its life as a small-town fire-truck. Through Patrick's Antique Auto Parts,in Casa Grande,AZ.,I was able to find out that my engine is actually a 261,with a 235 head! You can find your serial #'s stamped on the passenger-side of the block,above and behind the distributor,and above the starter. contact Patrick's at P.O. Box 10648 Casa Grande,Az.85230. I have a fax #-(520) 836-1117, but,unfortunately, no phone#. Patrick will send you a catalog full of n.o.s. parts especially for our trucks,as well as a cross-reference guide to figure out exactly what powerplant your truck has. They also stock high-performance parts for our trucks,as well as Langdon Stovebolt, which I'm sure that you're aware of. I hope that this information is helpful. Happy Bolting! Sincerely:
[email protected] "It takes a big dog to weigh a ton)