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Need some help figuring the right spark plug for my 383.

4K views 2 replies 2 participants last post by  bjl95mustang  
#1 ·
I picked up a 71 with a 383 stroker in it. I’m in the process of putting it back together after swapping in the right oil pan that didn’t hit the crossmember.

It had delco R45TS plugs in it when I took them out when I removed the Lt headers. I couldn’t even get one out with the headers on the car.

Ive seen their have shorty plugs. The heads are the basic cast with the straight plugs and the 4 valve cover bolts on the outside upper and lowe flange.

What would be a good short stock heat range plug to use?