Help me build my 360!

I have basically a .040" over stock 360 short block, complete with the 8:1 pistons...I just added some Magnum heads with R/T Springs, Summit K6901 cam, edelbrock air gap intake, and a milodon windage tray and oil pan. It runs pretty good...Not sure if it would run 12's though.

I can tell its low compression because it will still run good with the timing advanced so far the starter can't turn it over for a hot re-start...and thats on 89.