Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

will 2.02/1.575's fit in stock LS1 valve seat's?

Thread Tools
 
Search this Thread
 
Old 04-03-2003, 06:40 AM
  #1  
10 Second Club
Thread Starter
iTrader: (24)
 
10secondZ's Avatar
 
Join Date: Oct 2002
Location: Lake mary, (Orlando) FL
Posts: 722
Likes: 0
Received 1 Like on 1 Post

Default will 2.02/1.575's fit in stock LS1 valve seat's?

Just what the topic says <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> thank's,

carter
Old 04-03-2003, 08:22 AM
  #2  
Banned
iTrader: (3)
 
Richard@WCCH's Avatar
 
Join Date: May 2002
Location: Van Nuys, CA
Posts: 1,853
Likes: 0
Received 5 Likes on 5 Posts

Default Re: will 2.02/1.575's fit in stock LS1 valve seat's?

They'll fit fine, nothing larger though.......

Richard <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Old 04-03-2003, 08:39 PM
  #3  
9 Second Club
iTrader: (2)
 
ANIL8U's Avatar
 
Join Date: Nov 2001
Location: STL, MO
Posts: 521
Likes: 0
Received 0 Likes on 0 Posts

Default Re: will 2.02/1.575's fit in stock LS1 valve seat's?

will they fit with out any extra machine work?
Old 04-04-2003, 12:08 AM
  #4  
Banned
iTrader: (3)
 
Richard@WCCH's Avatar
 
Join Date: May 2002
Location: Van Nuys, CA
Posts: 1,853
Likes: 0
Received 5 Likes on 5 Posts

Default Re: will 2.02/1.575's fit in stock LS1 valve seat's?

Have your machine shop do a multi angle valve job for the 2.02"/1.57" valves. In my opinion there is no EXTRA machining needed. It's also important to have the machine shop make sure the valve tip height is the same as stock.
Good luck,
Richard <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Old 04-05-2003, 06:04 AM
  #5  
Teching In
 
Haaseman's Avatar
 
Join Date: Feb 2002
Location: Wichita Falls,Tx
Posts: 43
Likes: 0
Received 0 Likes on 0 Posts
Default Re: will 2.02/1.575's fit in stock LS1 valve seat's?

When the machine shop did my 2.02/1.60 valves he had to cut down the 2.02 to a 2.0185 and the exhauast went to a 1.575.I know thats being pretty exact but thats what he gave me.I am not to sure why he did this.Maybe there where some issues with the valves seating right. Or just the way he wanted them to sit in the head. <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Old 04-05-2003, 10:39 AM
  #6  
Banned
iTrader: (3)
 
Richard@WCCH's Avatar
 
Join Date: May 2002
Location: Van Nuys, CA
Posts: 1,853
Likes: 0
Received 5 Likes on 5 Posts

Default Re: will 2.02/1.575's fit in stock LS1 valve seat's?

The factory seat inserts measure:
2.036" = intake seat
1.587" = exhaust seat
As you can see 2.02"/1.57" valves will fit quite nicely without seating the valves on the surrounding aluminum. Of course, I have seen some heads prepped by other shops where 1.60" valves were partially seated on the aluminum. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> This caused the outer edge of the steel seat to chip and break away causing exhaust to leak past the valve and seat.

Richard <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

US Troops Rock!!



Quick Reply: will 2.02/1.575's fit in stock LS1 valve seat's?



All times are GMT -5. The time now is 08:52 PM.