Damn dude you need new ones fo sure.

 

How big a shot were you running?Do you have ant idea how much timing you were running?You got lucky this time,but you need to find out what caused the problem before you kill the motor.Did you drop the plugs while you were installing them?

 

one of my tr6's did the same thing when i sprayed mine one time no knock or anything and i ran the same times with it like that.

 

i was running a 150 shot. i am also having fuel pump problems as well now. she has died twice. i think that that is the whole problem to.

 

thats not good, and 3 is brown is not the rest might wanna address that to.

 

It needs more fuel. Gap should be .035

 

CRAZYCUTER4.8 killed 6 of 8 TR-6's on a 120 dry shot and 100 wet shot on the dyno. The 6 were all missing ground straps! it was nasty. You should of seen what the stock ones looked like after he sprayed about 3 bottles of 120 dry shot! Yeah thats what I said too!

 

I've seen plugs similar to that but its because of them being the wrong heat range for the engine. And like someone said above you're having serious problems with number 3 as well.

 

Ummm... I hate to ask, but where are the missing pieces of those plugs?

 

In my case when I blew a plug,piston,and etc... in my 4.8 4 days after I got the LS1 in I was getting some nast knock. It was where 2 pistons were scarred and hitting the head. It was either from the ground strap from te TR-6 I blew with the 4.8 that got caught in the head and dropepd loose on the pistons(I find that hard to believe since I had the heads machined but who knows) or the guys at the machine shop dropped some scrap down in the head and it finally dropped loose. I think it was that original TR6 from the 4.8. So know 2 of my LS1 pistons are dimpled! YYYYUUUUKK!! I would check some things to make sure!