Do they fit the stock loom or do I have to buy aftermartket looms? If I have to buy aftermarket looms, which ones are best?

 

If they are larger than stock you will have to really force them into the looms. I didn't want to do that so I got a set of split looms that screw together and clamp around the wires. Mine were Moroso but the same ones are sold by Mallory, MSD and others.

 

I have Accell 300+ Race wires and they fit the stock looms fine. They don't make the LT1 wires as thick as the other wires in that line so you can route them in the original manner.

 

Thanks for your help

 

mine fit with the stock looms too