Hi everyone,
I've got a question for the inliners:
What defines and seperates the 270 (302 also?) big port head from the 248-270
standard head? I think I've been told that the big port head has larger
valves?
I'm trying to plan out the rebuilding of the 248 in my '50 GMC and I need to
know what would be best to do for the head. I have heard the 270 big port
mentioned before and was curious if it is a feasable route to take for
performance. I would imagine that even if these heads are great I probably
won't be able to find one. Can I have large valves installed in a standard
head? What would be the better head to install these in: a 228 head with
higher compression or the stock 248 head?
Please let me know if I'm on the right track here or if I need some serious
enlightenment.
Dustin
53 GMC 1/2-long W/Hydra-matic
50 GMC 1/2 ton shorty
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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