Head Shaving, Ignition Timing Changes
Hey, I recently re-did my ZR 580's engine with Wiseco pistons, port polishing, Psi-twin pipes and .020" taken off of the heads, but I was told several times that the ignition timing must be changed in conjuction with the head modifications. Is this true?, and has ne1 here ever tuned a sled's ignition after head mods just to give me a ball-park, (prefferably a 580 ZR engine)????
Live fast, die young
94 zr 580
88 Ford Mustang
80 Honda CX 500