i have a 1991 chevy 1500 with a 5.4 and im having trouble finding where to run my power cable from the block to the cab i can't see a spot to feed it thru. if someone could enlighten me haha i would be gratful. also i just got the engine remanufactured and headers installed.

 

go on the passenger side, top left of footwell, directly below the bolt location for the blower motor and drill a hole, theres a seam there, careful to miss it, a 5/16 should do, use an appropriate grommet, or bigger for 4 ga or larger wire, this allows u to run it up behind the airbox to the battery

 

thanks for the help.