LS1TECH - Camaro and Firebird Forum Discussion

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

will LS1 heads fit a standard (1987) 350?

   
Old 03-17-2006, 04:43 PM
  #1  
TECH Resident
Thread Starter
iTrader: (6)
 
STANG KILLA SS 2's Avatar
 
Join Date: Jun 2004
Location: Killeen TX
Posts: 879
Received 37 Likes on 20 Posts

Default will LS1 heads fit a standard (1987) 350?


anyone know?
STANG KILLA SS 2 is offline  
Reply Like
Old 03-17-2006, 04:45 PM
  #2  
On The Tree
iTrader: (5)
 
joking511's Avatar
 
Join Date: Jun 2005
Location: birmingham ,al.
Posts: 174
Likes: 0
Received 0 Likes on 0 Posts

Default
Nope !
joking511 is offline  
Reply Like
Old 03-17-2006, 06:07 PM
  #3  
11 Second Club
iTrader: (2)
 
rtr2001ss's Avatar
 
Join Date: Mar 2005
Location: Chesapeake, VA
Posts: 479
Likes: 0
Received 0 Likes on 0 Posts
Default
no. Only fits LSx engines 99 and up. I think 97-98 had different head bolt patterns. So the fits would be 4.8L, 5.3L, 6.0 truck, 5.7L(LS1/6), 6.0L(LS2). All aftermartket LSx blocks.
rtr2001ss is offline  
Reply Like
Old 03-17-2006, 06:11 PM
  #4  
TECH Veteran
iTrader: (30)
 
LS69TA's Avatar
 
Join Date: Jan 2003
Location: Texarkana, Tx
Posts: 4,391
Likes: 0
Received 0 Likes on 0 Posts

Default
The LSX engines have nothing in common with the older blocks.
LS69TA is offline  
Reply Like
Old 03-17-2006, 06:18 PM
  #5  
TECH Fanatic
iTrader: (10)
 
NHRATA01's Avatar
 
Join Date: Jan 2002
Location: Dutchess, New York
Posts: 1,797
Received 27 Likes on 22 Posts

Default
Originally Posted by rtr2001ss
no. Only fits LSx engines 99 and up. I think 97-98 had different head bolt patterns. So the fits would be 4.8L, 5.3L, 6.0 truck, 5.7L(LS1/6), 6.0L(LS2). All aftermartket LSx blocks.
The valvecover bolt pattern was different on the 97/98s, but the head bolts are the same.
NHRATA01 is offline  
Reply Like
Old 03-17-2006, 06:29 PM
  #6  
TECH Enthusiast
iTrader: (8)
 
rocketman442's Avatar
 
Join Date: Apr 2005
Location: Clarksburg,WV
Posts: 645
Likes: 0
Received 1 Like on 1 Post

Default
Originally Posted by LS69TA
The LSX engines have nothing in common with the older blocks.

Actually the bore spacing is the same I belive and thats where the similarities end, but no parts will phsically interchange.
rocketman442 is offline  
Reply Like
Old 03-17-2006, 06:32 PM
  #7  
TECH Veteran
iTrader: (30)
 
LS69TA's Avatar
 
Join Date: Jan 2003
Location: Texarkana, Tx
Posts: 4,391
Likes: 0
Received 0 Likes on 0 Posts

Default
Hell, I didn't even know the bore spacing was the same. Figured they'd change that up too
LS69TA is offline  
Reply Like

Trending Topics

Old 03-17-2006, 06:55 PM
  #8  
11 Second Club
iTrader: (2)
 
rtr2001ss's Avatar
 
Join Date: Mar 2005
Location: Chesapeake, VA
Posts: 479
Likes: 0
Received 0 Likes on 0 Posts
Default
Originally Posted by NHRATA01
The valvecover bolt pattern was different on the 97/98s, but the head bolts are the same.
I knew something was different, just wasn't sure.
rtr2001ss is offline  
Reply Like
Old 03-18-2006, 08:58 AM
  #9  
Ric
TECH Enthusiast
 
Ric's Avatar
 
Join Date: May 2005
Location: Blairsville, GA
Posts: 555
Likes: 0
Received 0 Likes on 0 Posts
Default
Other than bore centers, I think the only other thing in common with the two engines is the crank journal sizes.
Ric is offline  
Reply Like
Old 03-18-2006, 11:16 AM
  #10  
TECH Junkie
iTrader: (3)
 
11 Bravo's Avatar
 
Join Date: Nov 2001
Location: Republic of Texas
Posts: 3,078
Likes: 0
Received 1 Like on 1 Post

Default
Someone should develop LS* style heads that bolt on the sbc. They would make a killing.
11 Bravo is offline  
Reply Like
Old 03-18-2006, 07:28 PM
  #11  
On The Tree
 
93ChevExt5.7's Avatar
 
Join Date: Apr 2005
Posts: 151
Likes: 0
Received 0 Likes on 0 Posts
Default
Ummm...anyone forget the reverse flow introduced with the Vortec engines of the mid 90s
93ChevExt5.7 is offline  
Reply Like
Old 03-18-2006, 10:02 PM
  #12  
10 Second Club
iTrader: (3)
 
mrr23's Avatar
 
Join Date: Mar 2004
Location: orlando, fl
Posts: 4,266
Likes: 0
Received 0 Likes on 0 Posts

Default
Originally Posted by LS69TA
The LSX engines have nothing in common with the older blocks.
rod bearings are the same.
mrr23 is offline  
Reply Like
Old 03-18-2006, 10:04 PM
  #13  
10 Second Club
iTrader: (3)
 
mrr23's Avatar
 
Join Date: Mar 2004
Location: orlando, fl
Posts: 4,266
Likes: 0
Received 0 Likes on 0 Posts

Default
here's pics of some DART SBC heads vs LS1 heads









mrr23 is offline  
Reply Like
Tags
Back to Subforum
Generation III Internal Engine
View Next Unread
Visually discerning the LS1, LS6 oil pumps. ?


Thread Tools
Search this Thread
Search this Thread:

Advanced Search

Advanced Search
Quick Reply: will LS1 heads fit a standard (1987) 350?


Reply Closed Thread Share

All times are GMT -5. The time now is 02:00 AM.