Re: TA 0291110 Buildup
Great build. I ran a vacuum pump on my last race motor, and picked up quite a bit of horsepower. I noticed on the picture of the vacuum pump lines/fittings that you have a standard breather on the other valve cover. Maybe this is not a breather, but if it is, this will serve as a path straight to outside atmosphere and not let the pump create any vacuum in the crankcase. You might want to consider a regulator at that location so you can adjust the amount of vacuum pulled.
That piece is one beautiful motor!
72 GS 455 Stage 2, 310 cam, 10.5 to1, SP-1, Holley Terminator, TH-200R4, Pro Touring
11.88 @114 mph, 4100 lbs
87 GN, stock, 18K miles
65 Skylark track day car under construction