AC plugs
Thread Starter
Drifting
Joined: Oct 1999
Posts: 1,622
Likes: 85
From: Export Pa.
AC plugs
I'm going to replace the plugs in my 65 327/365 hp engine. I have a box of AC 45 and AC R45TS. Cannot remember where I got the 45TS. I realize that the R is for resistance and 45 heat range, but otherwise are they equal?
Regards,
Dave K.
Regards,
Dave K.
Race Director
Joined: Apr 2005
Posts: 11,273
Likes: 2,136
From: Bowling Green, Kentucky
You cannot use the R45TS in original heads, since the T indicates a tapered seat. The R45TS translates to R is resistor plug, 4 is thread size, 5 is heat range, T is tapered seat, and S is extended tip. These plugs were used for 350 cid engines made in the 1970-1980 time period.
Larry
Team Owner
Joined: Mar 2003
Posts: 26,118
Likes: 1,874
From: Greenville, Indiana
Stop!!!!!!!!!!!!!!!!!!
Put the AC 45's on EBAY. I understand some people pay big bucks for these things!
As stated, the "T" stands for tapered seat (no gasket) so you can't use them. I've never found any problem with using extended tip plugs in a SBC nor do I know anyone who has had problems.
I have heard on the internet................................ ..........
Put the AC 45's on EBAY. I understand some people pay big bucks for these things!
As stated, the "T" stands for tapered seat (no gasket) so you can't use them. I've never found any problem with using extended tip plugs in a SBC nor do I know anyone who has had problems.
I have heard on the internet................................ ..........
Race Director
Joined: Apr 2005
Posts: 11,273
Likes: 2,136
From: Bowling Green, Kentucky
Larry
