How large can you machine a LS 1,2,6,7 spring pocket
03-30-2008, 08:17 PM
#1
On The Tree
Thread Starter
iTrader: (9)
Join Date: Apr 2005
Location: Southern WI
Posts: 131
Likes: 0
Received 0 Likes
on
0 Posts
How large can you machine a LS 1,2,6,7 spring pocket Just wondering what is the largest diameter spring pocket that can be machined into the ls series heads. I have heard 1.46 being done, anything larger?
03-31-2008, 10:50 PM
#2
Depends.
I hear the worst (too little material under spring pocket) are the L92/LS7/LS3 heads, but you can get around that by using a spacer which allows you to cut a larger diameter, without weakening the port roof too much. But you may need custom/longer stem valves.
As far as diameters go, I really can't help ya there.
I hear the worst (too little material under spring pocket) are the L92/LS7/LS3 heads, but you can get around that by using a spacer which allows you to cut a larger diameter, without weakening the port roof too much. But you may need custom/longer stem valves.
As far as diameters go, I really can't help ya there.
04-01-2008, 12:57 AM
#3
TECH Senior Member
iTrader: (18)
Join Date: Jun 2002
Location: NW Houston, TX
Posts: 10,036
Likes: 0
Received 0 Likes
on
0 Posts
I was told by TEA and TSP that it wasnt enough room on 5.3 heads for this to be done. I went with a PSI1513ML that has 220 on the seat and 550 open.
