Does it stil have r.a.b.s. module valve under drivers seat frame rail? if so, i seen them "stick" after power bleeding. only available at j yards or maybe ebay. i've tapped with a hammer before and gotten them unstuck. just an idea

__________________
1985 306 H.O. B303 GT40'S Edelbrock performer intake Holley 750 dual feed built C-4 2000 stall shift kit 3 Inch exhaust dumped before axle series 40 flowmaster stock 7.5