Did you remove the plenum at all, there is a ground there also for the injectors, the ground at the rear of the block wont prevent it from starting, its just for the head for corrosion, - side ground to the battery at front of motor on pass side, alt ground on driver side, crack the cold start injector, if you have gas spray it has pressure to the intake injectors.....does it even crank or just nothing when you turn the key?
