New heads
Jul 18, 2006 | 01:11 PM
#1
Thread Starter
12 Second Truck Club
iTrader: (5)
Joined: Apr 2005
Posts: 5,230
Likes: 5
From: Sittin on jackstands
New heads
I have the 317's completely stock on my LQ4 right now, but want a little more compression, and a little better flow you know ummmm just cause 
Anyway. I have a set of stock 5.3 headsd, but also have access to a set of unmolested 241's also. I think Im gonna swap the 5.3's for the 241's shave them about .030, and do a little gasket matching, and possible a slight bit of porting and polishing.
Whats yalls oppinions? 5.3's or 241's?
Anyway. I have a set of stock 5.3 headsd, but also have access to a set of unmolested 241's also. I think Im gonna swap the 5.3's for the 241's shave them about .030, and do a little gasket matching, and possible a slight bit of porting and polishing. Whats yalls oppinions? 5.3's or 241's?
Jul 19, 2006 | 09:20 PM
#3
Thread Starter
12 Second Truck Club
iTrader: (5)
Joined: Apr 2005
Posts: 5,230
Likes: 5
From: Sittin on jackstands
Probably, but dont get in a hurry, Im not, and Ill be doing a little to the 241'a before they go ion my engine. Send me a PM though, and if I decide to sell Ill let you know when ready.
Jul 20, 2006 | 01:41 PM
#7
Originally Posted by bluecajun5.3
i say keep the 317's and just mill them
Trending Topics
Jul 20, 2006 | 03:02 PM
#9
Launching!
Joined: Dec 2002
Posts: 240
Likes: 0
From: Prairieville, La
Originally Posted by Quik
or find 243 castings for 400 bucks and slap in your valves and you got 11.1 on a LQ9 or 10.5 on a LQ4
https://ls1tech.com/forums/showthread.php?t=544423
Since we have put our LS6 style heads on sale, we have had several customers inquire about special pricing on our 243 castings. So now through Labor Day, we will be offering new 243 castings for $385.00 per pair, bare. For anyone who buys these heads, we will CNC port them, perform our 5 angle valve job for 2.00"/1.55" or 2.02"/1.57" valves, hand blend the bowls, and mill to customer's specs for an additional $450.00...