Prc stage 1 ls6 question.
#4
LS1Tech Premium Sponsor
iTrader: (5)
You'll be right about 63cc, assuming your .010" mill number is correct. They started about 64.5cc or so before milling. Compression ratio calculations round and about half the measurements are guesses at the DIY level anyway....so 63cc chamber volume should do the trick for you (unless you're measuring everything else, and then you'd be measuring this too and not posting the thread).
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
#5
TECH Senior Member
If this head is CNC'd then they will end up bigger than 64.5cc (stock size). Unless you guys do not touch the chamber at all.
So the only way to say how much they will end up at is to measure after mill. All else is just guess work.
Op, if you want to know the truth, the only way is to measure. Personally I think TSP could cut you a nice deal and measure for you, their customer service is supposed to be awesome...
So the only way to say how much they will end up at is to measure after mill. All else is just guess work.
Op, if you want to know the truth, the only way is to measure. Personally I think TSP could cut you a nice deal and measure for you, their customer service is supposed to be awesome...
#7
LS1Tech Premium Sponsor
iTrader: (5)
The LS6 chambers are not CNC'd. The LS6 heads have been around long enough that it's pretty well known they start about 64.5cc, and you can use .006-.007" of milling per CC of chamber volume. Like I said, if this was a delicate scientific calculation for a pro-stock team and not the average do-it-yourselfer, he would have already measured himself. 63cc is going to be very close and will suffice for his calculations.
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Trending Topics
#8
TECH Senior Member
I know you do not CNC the chambers. But usually a porter will do a once over the chambers and reduce spark plug hump area (this is why I said unless you guys do not touch the chamber).
And Matt, perhaps we sometimes do not see eye to eye, but seriously, the pro-stock comment is weak, very weak.
And Matt, perhaps we sometimes do not see eye to eye, but seriously, the pro-stock comment is weak, very weak.
#9
LS1Tech Premium Sponsor
iTrader: (5)
The pro-stock comment was more a metaphor that someone on a higher level that needed closer measurements, like a pro-stock team, would have measured instead of making a thread asking.
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
#12
LS1Tech Premium Sponsor
iTrader: (5)
More important than the chamber volume, now that you have milled the heads again (they get milled before they leave here) you would want to measure the valve drop. That is how far the valves travels from their seat to a table top or your piston at TDC. With that measurement, we can compare your drop to stock and know about how much room you've given away, and therein about how much camshaft you can fit without having to cut the pistons!
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
#13
Matt I mnow this is gonna sound stupid, but on a table top how would I go about measuring that? I've been thinking about going with your torquer V3. I already have your. 660 valvesprings. I mainly need a cam, lifters and pushrods. Thanks for any help, I've bought everything from you guys and would like to get more from you.
Thanks, James
Thanks, James
#14
LS1Tech Premium Sponsor
iTrader: (5)
You'll need a dial indicator and some sort of steady mount so you can put the tip of the indicator on the valve tip. Then with a checking spring or no spring you measure it from the seat to table or piston.
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
#15
LS1Tech Premium Sponsor
iTrader: (5)
http://www.compcams.com/catalog/COMP...12_379-380.pdf
That kit#4942 has the stuff you need AND the degree wheel so you can degree your cam and check piston to valve clearance accurately after install, too!
That kit#4942 has the stuff you need AND the degree wheel so you can degree your cam and check piston to valve clearance accurately after install, too!
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!