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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Z28 c10 on May 02, 2006, 07:11:00 pm

Title: Spark plug preferance
Post by: Z28 c10 on May 02, 2006, 07:11:00 pm
Hey guys, just wondering what type of plugs you guys run, prefer, never use again,etc. I've been running AC R43's for about three months now, since I put in the new cam, and they're not fouling out, but they're breaking down already. I use to run NGK's in my 5.0 and my SC 3.8 cougars and rarely ever had problems with them but I've been told by a couple buddys not to use them in Shirley, not quite sure why but, oh well. Just wanted to get a little input from ya'll.

 JayTater

 Z28 C10

Title: Re: Spark plug preferance
Post by: 123 pugsy on May 02, 2006, 08:26:00 pm
I've used NGK once and they didn't perform well.That was about 10 years ago.Ever since,I've been using AC Delco with no problems.

Title: spark plugs
Post by: Redneckchevy on May 03, 2006, 05:25:00 am
I dont no if u think this is a good Plug but iv been using bosch platinum 4 since thay have came out and i never had any problums...thay have lasted in cars with O ring leaks ...Fuel flooding the cylinders. Pre iignition and dont let any one trick you into thinking that that get so hot that thay will burn a hole in ur piston..a bud at my work swares that thay will..funny thing is he never used them

Title: Re: Spark plug preferance
Post by: Blazin on May 03, 2006, 07:16:00 am
I have always used ACs, tried Autolites over a year ago in my 55 ( 355 motor ). Have had no problems with them yet. Reason I tried them is a freind of mines dad said that is what they run in there late model 358 chevy motor and had better luck with them than ACs.

Title: Re: Spark plug preferance
Post by: Z28 c10 on May 03, 2006, 05:01:00 pm
Guess I might step down to the R45's. It's worth a shot. Thanks guys.

 JayTater

 Z28 C10

Title: Re: Spark plug preferance
Post by: 123 pugsy on May 03, 2006, 08:20:00 pm
Hey Z28,what do the #'s 43..45.. stand for? Curious.

Title: Re: Spark plug preferance
Post by: Z28 c10 on May 03, 2006, 08:35:00 pm
R43 is a hotter plug than the R45.

 JayTater

 Z28 C10

Title: Re: Spark plug preferance
Post by: roundedline on May 04, 2006, 10:03:00 am
I generally run R45TS' in mine BBC, I have used either AC, Bosch Platinum or Autolite and had good luck with each of these.  Generally I run AC's though.

Chris Lucas
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