Go Back   LS1TECH > LS1-LS2-LS3-LS6-LS7 PERFORMANCE > Generation IV Internal Engine
Sign in using an external account
Register Forgot Password?
Search

Generation IV Internal Engine
2005-2014 LS2 | LS3 | LS7 | L92 | LS9
Sponsored by
ERL Performance

L76 questions

Reply
 
Thread Tools Search this Thread
Old 08-21-2012, 06:21 PM   #1
11 Second Club
 
work in progress's Avatar
 
Trader Rating: 2
Join Date: Feb 2002
Location: Texas
Posts: 910
Default L76 questions

I bought an L76 to build for my camaro, and the builder is telling me the motor came with 243 heads compression is at 11.5 to 1 . Supposedly this motor came out of a tahoe that was warrantied. The highest compression I can find listed anywhere is 10.4 in a G8 gt, but that has different heads than what came in this Tahoe. The rotating assembly had material removed like it was internally balanced. Is this some kind of a screw up from the factory?? Trying to figure out where compression will be with L92's.
__________________
2002 Silver SS
Mods-LFA 6.0, LS3 Heads, EPS 232/242 cam, 1 3/4 headers, tune, Hooker catback, lid, adjsutable TA, LCA's, relocation brackets, PHB, SFC, FTI 4000
work in progress is offline   Reply With Quote
Old 08-21-2012, 07:05 PM   #2
TECH Regular
 
AW794's Avatar
 
Trader Rating: 5
Join Date: Apr 2004
Location: West Palm Beach, FL
Posts: 413
Send a message via AIM to AW794
Default

I thought the L76 came with L92 heads from the factory
__________________
1999 Black Pontiac Trans-Am WS6, Moser9", Trex, Built T56, 411RWHP Sold!
2010 White Shelby GT500 435RWHP Traded!
2007 LeMans Blue Chevrolet Corvette Z06 456RWHP Reluctantly Sold!
2000 Navy Blue Metallic Pontiac Trans-Am Firehawk #168
AW794 is offline   Reply With Quote
Old 08-21-2012, 07:22 PM   #3
11 Second Club
 
work in progress's Avatar
 
Trader Rating: 2
Join Date: Feb 2002
Location: Texas
Posts: 910
Default

Not this one. It was in a tahoe, supposedly...
__________________
2002 Silver SS
Mods-LFA 6.0, LS3 Heads, EPS 232/242 cam, 1 3/4 headers, tune, Hooker catback, lid, adjsutable TA, LCA's, relocation brackets, PHB, SFC, FTI 4000
work in progress is offline   Reply With Quote
Old 08-21-2012, 07:29 PM   #4
TECH Enthusiast
 
Trader Rating: 13
Join Date: Sep 2007
Location: Jacksonville, NC
Posts: 653
Default

L76s did come with L92 heads...the L33, LH6, 5.3s were aluminum blocks and came with 243s. LC9s came with 799s I think.

Have you checked for the displacement cast anywhere into the block? What about the vin etched on the block on the backside?
__________________
1995 Impala SS-6.0L LQ4-222/226-L92 Heads.

2005 CTS-V-LS6-Stock-ish
GA95DCMSS is offline   Reply With Quote
Old 08-21-2012, 07:33 PM   #5
11 Second Club
 
work in progress's Avatar
 
Trader Rating: 2
Join Date: Feb 2002
Location: Texas
Posts: 910
Default

Just found out it is a hybrid, it is an L76 and it does have 11.5 to 1 compression. So, going from 243 heads to L92's what will the compression be?
__________________
2002 Silver SS
Mods-LFA 6.0, LS3 Heads, EPS 232/242 cam, 1 3/4 headers, tune, Hooker catback, lid, adjsutable TA, LCA's, relocation brackets, PHB, SFC, FTI 4000
work in progress is offline   Reply With Quote
Old 08-21-2012, 07:55 PM   #6
TECH Enthusiast
 
Trader Rating: 13
Join Date: Sep 2007
Location: Jacksonville, NC
Posts: 653
Default

Oh so it's a LFA. I'vegot to find me one of those. Those are advertised as 10.7-10.8:1 comp with the 243s, but of course people have been wrong. Not shabby at all either way.

With L92s and their 69-70cc chambers, if it is in fact 10.7-10.8:1, you'd come to ~10.3:1.
__________________
1995 Impala SS-6.0L LQ4-222/226-L92 Heads.

2005 CTS-V-LS6-Stock-ish
GA95DCMSS is offline   Reply With Quote
Old 08-21-2012, 08:15 PM   #7
11 Second Club
 
work in progress's Avatar
 
Trader Rating: 2
Join Date: Feb 2002
Location: Texas
Posts: 910
Default

I think it is going to be a fun build. I hope I end up making close to what the LS3's are making with the extra compression.
__________________
2002 Silver SS
Mods-LFA 6.0, LS3 Heads, EPS 232/242 cam, 1 3/4 headers, tune, Hooker catback, lid, adjsutable TA, LCA's, relocation brackets, PHB, SFC, FTI 4000
work in progress is offline   Reply With Quote
Old 08-21-2012, 08:15 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hybrid tahoe leftysrepsol Conversions & Hybrids 12 05-12-2014 11:24 AM
LS 2 Engine Build??? 2doorls2 New LS1 Owners - Newbie Tech 0 04-18-2014 08:54 AM
lost! 94kblazer Conversions & Hybrids 2 04-01-2014 01:43 PM
L76 short block with 317 heads..compression? awd-rwd racer Generation IV Internal Engine 0 04-29-2013 07:29 AM
L76 vs LQ9... Why is the L76 more powerfull with less compression? Need4Camaro Generation IV External Engine 11 04-15-2010 06:44 AM


Tags
243, 60, 864, block, compression, heads, l76, lq4, ls1tech


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



Join Ls1Tech

All times are GMT -5. The time now is 05:59 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - Terms of Service - JOBS
Emails & Contact Details