70duster 360 gets hotter the faster i go

Oh, and the holly has ben modified by me so its on idle circut... I drilled small holes in primary side, then closed primary all the way (off set screw) then slowley closed secondarys untill it was bairly runnin, then jus cracked open primary jus a lil to set idle... That idle screw is like 1/2 turn in... It has super crispy throttle now...cuz it was runnin on main ciruct all the time b4 and ran like crap.... I think i kno what im doin with the car... Lol
74s up front, 80s in back, 28 shooter up front, 31shooter in back... Its got 50cc pumps, but it runs better on the 30cc cams (orange), so i guess thoz big pumps jus "look cool" now... Lol
Oh and a 2.5 power valve, its about 5-6" of vacuum in gear