Frank you nailed it " streetable" is a wide used term..to me streetable is able to run it 10 miles one way to a cruise inn or parade and bring it home...
i have a 511 bbc..14 to 1 solid roller..set of worked Big broadie heads (have no idea what they flow)..i would day 340 easy.....
will run high 5.80's in the 1.8th mile ...myself and the wife will run it down the street to the local hamburger joint in the spring and fall..i DO NOT mess with racing or street cruising in this South Carolina summer heat...i will bring back all my toys later september and run all winter long...
Now i like radicial street motors...around the 11 to 1 ratio...but other people like their street motors 9/1 to 10/1.......again preference
You can get into all kinds of debate,,,,how about the 400 block...drill the heads for the steam holes or DO NOT drill the heads ???..i have seen it done both ways w/no problems..
Brian
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Bjuice..
"I'M YOUR HUCKLEBERRY ! "