How heavy is your trailer? Is it a hardtop or a full camper ? When I originally put my '40 on the road it had a bone stock 250 with single barrel, exhaust manifold, 2:56 gears and a saginaw 4 speed. We were towing a hardtop no problems then worked up to a 26' Glendale(a bit of a heavy trailer). It would tow it but you knew you had it on. Thus the reworked 250 (.060", cam, headers and a 4 bbl along with a 3:36 gear. Then I went stupid a put a 350 in it but that's another story.
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Ontario Inliners
1940 Chev Sedan
1954 Chev Custom
1965 Chev Pick-up
