Dang, you should be in the late 11's or early 12's with 410 gears.
Do you run a stick or an automatic? If you have an AOD you need to get a really good stall converter for it, and a Lentco control valve to eliminate the third gear torque converter lock up that takes a good 1/2 second off your time slips.
Let me know how it runs now. You should have 10-12 initial and a total of 32 without vacume advance. With vacume a total of no more than 42 degrees on pump gas.
Let me know how it ends up. You can email me at
jim_howard_pdx@yahoo.com.
Good luck and cut some time off those et's. I am expecting mid 12's with my combination on my next run. I am running 3.25 gears and a C-4 with 2,000 RPM stall converter. I could pick up a half second with a 3k stall and slicks.