yzriders182

iTrader: (1)

I am putting on a twin set up on a 03 Silverado 1500 with a 5.3l in it. I have ARP head studs to put on it and when doing that and changing out the valve springs i was going to replace the head gaskets too. What ones should I get?

Second what spark plugs should i get and what gap should i run them at? looking for about 8-10 psi maybe a little more latter on once I work things out.

Thanks for the help

lglowe

iTrader: (3)

Ls9 head gaskets and ngk br7ef gapped around .028 should do well for you especially later on when boost is up.

yzriders182

iTrader: (1)

Ok would you recommend oem gaskets or aftermarket?

Also what's the difference between the ls9 gasket and the stock style 5.3l gaskets?

Thanks for the help

yzriders182

iTrader: (1)

Ok i was looking on summit and a few other sites for ls9 head gaskets and theirs a bunch of options. What should i get for my 5.3l?