Will Autolite 403s even fit into an LS1?
02-22-2005, 04:03 PM
#1
Will Autolite 403s even fit into an LS1? I was trying to find a really cold plug, colder than a TR6 and gave the guy the Autolite nymber 472 because I was told it was the one i needed. I also gave him NGK R5671A-7 if he didnt have the others. Well he said that 472 didnt even exist and he didnt have the other but the NGK plug referenced to the Autolite 403. Well I looked at them and they dont look right to me and I cant find too much info on them on the net. Will they even fit and are they even a cold plug?? I need to know quick!!
