323- great highway
355- really nice for highway and around town
373- quicker off the line, ok highway
I'd get 355's and an 11" convertor.
Change that JUNK CAM !!
Get an Ultra-Dyne 280-288 h 12+6 $155.00 from me.
Or Comp 51-223-4, 268-280 h10+4 $ 118.00 from me.
Pontiac Gregg
1-303-776-0877
Web site:
http://www.pontiacengines.net
click on cams, has tech data with each one.