[SmokeN 12 ValvE]

Not worth the risk if you don't have an extra set. I used a #40 drill bit which is a .098. The first one I drilled got seized up and broke off. If you do drill them out be sure to use alot of wd40. I drilled about an 1/8 in backed out sprayed wd40 and so on. There was no lope no difference in power IMO waste of time.:thumbsup

 

[SmokeN 12 ValvE]

Every truck is different not all trucks will respond the exact same way to the same parts. Thats why we have to all experiment and find out what works for us. :thumbsup

I agree, in my truck it made no difference except a little rougher idle.

Rob Scheid in an email told me no more than .084 lines and tubes on an automatic.

 

[SmokeN 12 ValvE]

:lol3: