Diasassembled a brand new LS7 today to install the 24x crank trigger
and the Ls2 50% duty cycle cam gear for the cam sensor. Ls7 is going into
an 05 C6 6 speed convertible! X-mas present for a customers wife! Luck gal!
I need torque specs for reassembly -- Titananium Rod Bolts- Mains ect.
No Service manuals for LS7 -- Any help great ly appreciated!!!
Thanks

 

Let me first say I do NOT have a service manual for the LS7... yet.

I am involved with an LS7 C5 retro with a TT kit... so our motor came apart for the same reasons... and new pistons.

What I can gather as far as info to use in leiu of the official GM specs is this...

The LS7 head bolts are the same as the LS1/6/2 (after mid 2004)... if you are using new GM bolts use those torque/degree to yield specs. Main bolts... use LS2 specs. Ti rod bolts? Get ahold of Eagle and ask what they recommend... after all they made the rods for GM. See if they will cough the info or cry OEM agreement to not divulge. Thats what I plan on doing. If not our project could be on hold until SOLID info is available on the rod bolt specs. All the rest of the peripheral torque specs use an LS2 service manual...

I don't think it was in GM's priority path to support freaks like us that disassemble brand new $14k crate motors... especially motors with technology that is not supported by prior platforms.

Has anyone determined when the LS7 manuals will be available? I would think real soon...

Bill

 

Yeah, you freaks are crazy for ripping apart a perfectly good $14k motor

 

When I ordered mine several weeks ago from SDPC Nicky told me they were on backorder...unfortuantely we know what that means.....they'll be ready when they are ready

 

Thanks to Katech I got the specs for the titanium rod bolts
20 Newton Meters(14.7 Ft lbs) and then 110 degress+or- 3 degrees

 

12560273
STUD-CR/SHF BRG CAP
20NM +/- 4NM +51DEG +/-3DEG

12560272
BOLT-CR/SHF BRG CAP
20NM +/-4NM +80DEG+/-3DEG

11609289
PLUG-ENG BLK COOL DRN HOLE
60NM +/- 10NM

11519978
BOLT-ENG BLK VALLEY CVR
25NM +/- 4NM

12556127
BOLT/SCREW-CR/SHF BRG CAP
25NM +/- 4NM

11588949
PLUG ASM-ENG BLK COOL DRN HOLE
60NM +/- 10NM

11519772
BOLT-CYL HEAD
30NM +160DEG +/-4DEG

12558840
BOLT-CYL HEAD
30NM +/-5NM

11610259
PLUG ASM-CYL HD CORE HOLE
20NM +/-4NM

12550587
BOLT-CR/SHF RR OIL SEAL HSG
25NM +/- 4NM

11516076
NUT-CR/SHF OIL DFL
25NM +/-4NM

11589178
BOLT-CR/SHF CALR
50NM +/- 7NM + 140DEG +/-4DEG

12553332
BOLT FLYWHL
100NM +/-10NM

11609825
BOLT-CONN ROD
20NM + 100DEG +/-3DEG

11516479
BOLT-OIL PAN BFL
10NM +/- 2NM

11588949
PLUG ASM-ENG BLK OIL GAL
60NM +/-10NM

11516480
BOLT-W/PMP INL
15NM +/- 2NM

12551926
BOLT-W/PMP
30NM +/-5NM

11516486
BOLT-ENG COOL AIR BL PIPE
12NM +/-2NM

12568976
MANIFOLD ASM-INT
10NM +/- 1NM

12554211
BOLT=F/INJ FUEL RL
10NM +/- 2NM

11519971
BOLT-THROT BODY
10NM +/- 2NM

11518424
STUD-EXH MANIF
20NM +/- 4 NM

11518860
BOLT-EXH MANIF FLG
20NM +/- 4NM

12581276
DAMPENER ASM-TIMG CHAIN
25NM +/- 4NM

11589311
BOLT-TMG CHAIN DPNR
25NM +/- 4NM

12550587
BOLT-CM/SHF SPKT
30NM +/- 5NM

12551163
BOLT-VLV LFTR GDE
12NM +/- 2NM

12551177
BOLT-CM/SHF RET
25NM +/- 4NM

11561455
BOLT-CM/SHF THR PLT
15NM +/- 2NM

11588791
BOLT-VLV RKR ARM
30NM +/- 5NM

12577215
BOLT-VLV RKR ARM CVR
12NM +/- 2NM

12570125
SENSOR ASM-KNOCK
25NM +/- 4NM

12551177
BOLT-CR/SHF POSN SEN
25NM +/- 4NM

11516424
BOLT-IGN COIL
10NM +/- 2NM

12554211
STUD-IGN COIL BKT
12NM +/- 2NM

12561465
BOLT-CLU PRESS PLT
70NM +/- 7NM

11588736
BOLT-EVAP EMIS CNSTR PURGE SOL VLV
50NM +/- 10NM

15326388
SENSOR-ENG COOL TEMP
20NM +/- 4NM

12573107
SENSOR-ENG OIL PRESS
35NM +/- 5NM



I'm not responsible for inaccuracies,

 

So we've got some people putting these in C5s - has ANYONE put one of these in an F-body yet?

 

Slight difference between what proautoman and Katech posted for the rod bolts though..

Katech, thanks for posting this info, much appreciated!

 

What are the numbers on these LS7 motors? How do they compare to the 408?