LT4 LT4 Spark Plugs

[Louis Bartay]

Is part#AC 41-943 the correct plug for a 1996 LT4 Corvette? What is the factory gap? And is this the plug that I have read that the platts or pucks are falling off and hurting the pistions? What is the BEST plug for a stock LY4???
Thabks, Louis

 

[lt4george]

Try the NGK TR-55 V-Power Plugs, very reasonable price
and very popular on vette sites.
I just bought a set and will install in 1-2 weeks in my LT4.

 

[vetsvette]

I'm running the Bosch +4's. Already gapped. I like 'em.:gap

 

[twiget]

I put the stock ACDelco plugs in my GS when I changed them. Didnt have any problems with them before the change, and havent had any since. I dont know if that part number is the correct one. The Ecklers part number for the ACDeclo plugs is 32663. As for gapping, I think it is 0.030, but you might want to check that.

Jason

 

[groyle]

According to the Chiltons book the gap is set at .050..BUT remember to apply the anti-sieze compound to the plug thread.

 

[lt4george]

Yes, the .050 gap is correct!!