I'm having a problem with this IROC I just baught. It cranks way to slow. I've tried two different batteries, a new mini starter (the old one was fried) and I even jumped it to another vehicle and it still cranks to slow. The car hasn't started since I purchased it and I'm pretty sure at this point that it is ignition related but I need it to crank (faster) before it will ever fire.

Oh and it's an auto, 305, TPI, '87 IROC.

 

Are all the battery and starter connections in good shape?

Does it turn at a consistenly slow pace, or does it turn and then sort of stop and hesitate for a second before starting to turn again?

 

It has new battery terminal and a new positive cable. All the other wiring is good. It is a cosistant crank. Just for kicks though, what would cause it to crank inconsistantly?

 

whats the CCA rating on the battery? i would think you would need more cca's

 

Ignition timing advanced too far.

 

My battery has 500 cca but I jumped it off of a car that had 750 cca. I would think that wouldn't matter. I'm probly wrong though.

I'm sure I have an ignition problem. I may be wrong about the consistant cranking. I'll have to check it later.