Raise

iTrader: (31)

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!!

Sales2@Texas-speed

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!

Raise

iTrader: (31)

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?

Gregorya24

iTrader: (13)

my cam will go great with those heads too! my buddie is running the same cam as me with those heads and put down 440rwhp

Raise

iTrader: (31)

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

Gregorya24

iTrader: (13)

i hear ya, im not a peak hp guy either i like torque hence the reason i bought the cam lol but im going to a bigger ci so i need to let this one go

MrElectric03

iTrader: (71)

Sure you can, im running the 5.3s with .045" cometics and have a 11.2:1 static and 8.6:1 dynamic comp. My cam is a 226/232 .609/.604 113+2 by the way, I made good numbers.

180ls1

iTrader: (4)

i would like to know this also.

Empatho

iTrader: (16)

+2
what would the Comp be with a stock engine + stage 2.5 5.3L heads unmilled with a .040 gasket be?

Sales2@Texas-speed

iTrader: (5)

Unmilled with a .040" gasket it comes to right about 11.0:1.

Raise

iTrader: (31)

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?

xBROKEx

iTrader: (7)

i ran that setup with no issues (T3/prc 2.5 5.3l/.040 gasket)

Empatho

iTrader: (16)

thanks Matt