I think the term "street use" has different meanings to people. I have a 1970 .040 over 460, 10 to 1 with a 217 degree (@ .050") cam in a 1976 Ferd 4x4 p/u. Never seen 5,000 rpm. Have had both a 750 and 600 Eddy carbs on it. Saw no difference between the two. Put the 600 back on. Has the performer intake and cruises the logging roads all day, hauls parts and firewood. Great low end power. BTW - both carbs got 11mpg. I have 1000 cfm on the 451 that has the 237* cam, and will see 6,200. This is also for street use, just at a higher rate!! Joe ************************************** Get a sneak peak of the all-new AOL at http://discover.aol.com/memed/aolcom30tour [Non-text portions of this message have been removed] ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.