Questions for local LS engine experts...
Questions for local LS engine experts... I am thinking about a cam swap in my 383 to something meaner, but am concerned about PTV clearance. So, I am actually trying to find out which pistons are in my car.. Can someone read this and see if this makes sense?
My car has a Lunati 383 rotating assembly. Now, Lunati makes 3 kits. One comes with -30cc dish pistons, one with -8cc and one with +8cc. My car around 11:1 compression, and the heads are Cartek stage 3, which are 243's milled .030". Would it make sense that my pistons would be the -8cc dish ones?
Basically, I would love to be able to do a cam swap and not have to worry about PTV, and if I could avoid pulling off the heads, that would handy.
Oh, and the cam I am looking at has the following specs:
CompCams grind 242/248 XFI/XFI .613"/.617" 112 +2
Cartek head specs are here: http://www.cartek.net/parts/headsand...headsmain.html#
I thought I might type into some local knowledge. THanks guys and girls.
-Jason
My car has a Lunati 383 rotating assembly. Now, Lunati makes 3 kits. One comes with -30cc dish pistons, one with -8cc and one with +8cc. My car around 11:1 compression, and the heads are Cartek stage 3, which are 243's milled .030". Would it make sense that my pistons would be the -8cc dish ones?
Basically, I would love to be able to do a cam swap and not have to worry about PTV, and if I could avoid pulling off the heads, that would handy.
Oh, and the cam I am looking at has the following specs:
CompCams grind 242/248 XFI/XFI .613"/.617" 112 +2
Cartek head specs are here: http://www.cartek.net/parts/headsand...headsmain.html#
I thought I might type into some local knowledge. THanks guys and girls.
-Jason
PTV is always going to be somewhat of a gamble unless you actually check it. My best guess would be that you have the -8cc's, and it's probably in the form of a flat top with valve reliefs, and not dish.
I run a 238/243 .597/.617 on little (figuratively speaking) 5.3 heads. I have the Mahle -4cc valve relief pistons. When in doubt, check it.
I run a 238/243 .597/.617 on little (figuratively speaking) 5.3 heads. I have the Mahle -4cc valve relief pistons. When in doubt, check it.
