I have the older 320 S/R head that takes a tapered plug with a .460 reach.

Found out long intake and short exhaust.

Thanks for your reply

Figured it out

Both holes have threads but no oil passage hole on the upper right and left of the big hole. I guess I will get the fittings and use the big one.

Can you run oil pressure gauge to this or is there another port for the gauge ?

Will be a 23T Altered.I just wanted a car that would give me a thrill. I have not drag race before so this will be an experience for me. I will be running KCIR in Kansas City,Missouri and Heartland Park in Topeka and do some travel. I really appreciate your advice. Is that your car ? If so awsome l...

Just wanted to get an idea on what plugs to start out with. I have a 505 BB Chevy with Enderle injection on alky,Dart 320 heads Crane roller cam .730,13:1 compression. This is all new to me as I come from the dirt tracks.
Thanks