PRC 5.3 heads...can I run a thinner gasket??
#1
TECH Addict
Thread Starter
iTrader: (31)
Join Date: Dec 2003
Location: Virginia Beach, Va
Posts: 2,152
Likes: 0
Received 0 Likes
on
0 Posts
PRC 5.3 heads...can I run a thinner gasket??
Ok...here is what my setup will be. I have a set of PRC stage 2.5 5.3L heads unmilled. I have not chosen a cam yet but here is a spec range I am staying in: between 224-228 duration, at or just below .600 lift, and an LSA between 110-112. I am mostly worried about low to midrange power and am not concerned with peak numbers...I want torque torque torque!!! These heads bump compression up to close to 10.8:1 and Im trying to get as close to 11:1 as I can. Since the heads are unmilled, my only choice is running a thinner gasket. I dont want to go below .040 for clearance issues. Then again, going with .045 wont make much difference over stock, Ill just run stock GM MLS gaskets. I need some input here..mainly from people with experience with these heads. I need to know if I can run a thinner gasket with this head/cam combo w/o worrying about clearance issues. Id like to be able to run the .040 gasket but not at the risk of having clearance issues. By the way, this is on a stock LS1 346 block. Come on fellas, give me some feedback. Thanks!!
#2
LS1Tech Premium Sponsor
iTrader: (5)
With those heads unmilled, you can run a .040" thick gasket safely with about as big as our TorquerV3...a 228 duration camshaft would not be any problem, and you could even mill the heads a bit if you'd like!
__________________
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!
#3
TECH Addict
Thread Starter
iTrader: (31)
Join Date: Dec 2003
Location: Virginia Beach, Va
Posts: 2,152
Likes: 0
Received 0 Likes
on
0 Posts
Im guessing this will bump me up to somewhere between 10.9:1 and 11:1. Is the price of cometics worth the 2 tenths of compression over the stock mls gaskets?
#5
TECH Addict
Thread Starter
iTrader: (31)
Join Date: Dec 2003
Location: Virginia Beach, Va
Posts: 2,152
Likes: 0
Received 0 Likes
on
0 Posts
Sorry buddy, your cam has a little too much duration for my goals. Plus your lsa is too wide. Once again, im not concerned with peak hp numbers. Thanks though buddy
Trending Topics
#10
LS1Tech Premium Sponsor
iTrader: (5)
Unmilled with a .040" gasket it comes to right about 11.0:1.
__________________
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!
#11
TECH Addict
Thread Starter
iTrader: (31)
Join Date: Dec 2003
Location: Virginia Beach, Va
Posts: 2,152
Likes: 0
Received 0 Likes
on
0 Posts
Hey Matt, this is exactly what I want to do. My heads are unmilled and I want to run the .040" gasket to achieve the 11.0:1. I want to make sure I dont have any PTV clearance issues, so maybe you can tell me if this cam will be ok. I will be running a cam in this range: between 224-228 duration, lift of close to but no higher than .600, and an lsa of 111-112 with 3-4 degrees of advance to achieve a 108 ICL. Would I be safe to run this combo?
I talked to Trevor the other day, and I told him what I wanted to do. He told me to be careful when running to .040" gasket with this combo because it might be close. He also told me I will want to maintain a good quench. I still dont understand what quench means exactly, or how to achieve a good quech, but Id like to know if my combo will have a safe PTV clearance while maintaining a good quench. Can yall help me out?
I talked to Trevor the other day, and I told him what I wanted to do. He told me to be careful when running to .040" gasket with this combo because it might be close. He also told me I will want to maintain a good quench. I still dont understand what quench means exactly, or how to achieve a good quech, but Id like to know if my combo will have a safe PTV clearance while maintaining a good quench. Can yall help me out?