Should I Mill My PRC 5.3's
12-04-2008, 01:28 PM
#1
Teching In
Thread Starter
iTrader: (3)
Join Date: Oct 2008
Location: indiana
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Should I Mill My PRC 5.3's Next month am going to install a set of PRC Stage 2.5 - 5.3 heads along with a Comp XER273HR 224/230 3581/.588 cam. Should I mill these heads for a bump in compression? If so, how much?
My car is an '01 vette which has 4:10 gears and a MN6.
thanks
My car is an '01 vette which has 4:10 gears and a MN6.
thanks
12-04-2008, 01:34 PM
#2
STF Veteran
iTrader: (8)
Join Date: Mar 2003
Location: lost in VA
Posts: 828
Likes: 0
Received 0 Likes
on
0 Posts
We took 36 thousands off of my prc 5.3s, i also have a custom gind 24x/25x @64x lift.
it put me @ 58CC which should give me 11.6:1 compression with a i believe .45 thickness head gasket
depending on what compression ratio you want is how much you need to mill the heads. be sure to check PTV clearances as well
hope this helped
it put me @ 58CC which should give me 11.6:1 compression with a i believe .45 thickness head gasket
depending on what compression ratio you want is how much you need to mill the heads. be sure to check PTV clearances as well
hope this helped
12-04-2008, 02:52 PM
#4
You can definately mill those heads if you want to. Milling them down .020" would take the chamber down to ~59cc and still leave you with enough PTV. I always recommend checking PTV on any cam or head swap but this set up should clear as we have done a few set ups similar to this in the past.