ported iron heads????

[sinister87GN]

I have champion iron heads on my gn wanted to replace spark plugs with something other then auto lights this is the plug champion recommends do you guys run anything spacial or just ac delco

 

[XLR8]

I run AC Delco 43's.

 

[mat231v6]

Ac all the way.

 

[JayC]

NGK UR5s

 

[QUIP'6']

ngk ur5's

 

[johnplogii]

I run AC delco cr42ts

 

[Underboost]

Ac r42ts

 

[SPOOLFOOL2]

While dyno testing or on the street.

My car ran strong with NGK BPR6FS plugs gaped at .028" when my car was at 440 RWHP. Once I started making over 500 to the wheels theyed cut out at high boost. Now I run AC R43TS plugs gaped at .028".

Happy spooling.

Mike Barnard

 

[Underboost]

My car ran strong with NGK BPR6FS plugs gaped at .028" when my car was at 440 RWHP. Once I started making over 500 to the wheels theyed cut out at high boost. Now I run AC R43TS plugs gaped at .028".

Happy spooling.

Mike Barnard

My gap was .027-.026 w/ the AC R42TS at 28-30psi it worked for me.

 

[sinister87GN]

My gap was .027-.026 w/ the AC R42TS at 28-30psi it worked for me.

I ordered NGK UR5s the gap is set low because of spark blow out under high boost correct????what would be a good GAP for the ur5 i think its u grooved

 

[JayC]

My gap was .027-.026 w/ the AC R42TS at 28-30psi it worked for me.

This

I ordered NGK UR5s the gap is set low because of spark blow out under high boost correct????what would be a good GAP for the ur5 i think its u grooved

 

[Ed Valvo]

Describe spark blow out? Popping?

 

[Boost231]

spark blow out would be popping to me. I gapped my NGK UR5's to .28 at 27+psi

 

[Royal-T-Ltd]

NGK UR5s

x 101234 [.032 tight] this is at 25-26psi