nazztman4739

iTrader: (6)

i torqued my heads yesterday according to specs 22 lbs first pass 90 degrees second and 90 3rd 50 final ok the problem is the first pass didnt make it pass 45 degrees whats the final torque number

z99ls1

iTrader: (12)

That doesn't sound right

ct06gto

http://www.ls1howto.com/index.php?article=3

speedtigger

iTrader: (16)

I see some that say 22 then 90 then 70 and some that say 22 then 90 then 90 again. So, which one is correct?

CNTLSE 1

iTrader: (11)

I just did mine torqued to 22 then 90 and 90 except for numbers 9 and 10 which is 50 instead of the last 90. Same way I did my last heads with 0 issues

sman

iTrader: (4)

Done 3 sets this way on 2 different motors, works fine every time.

Make sure you have the bolt holes clean! No coolant or anything in them, liquids dont compress, and you WILL break a bolt, theres several threads on here right now where people broke bolts.

ct06gto

My helms book for my 06 gto (ls2) says tighten the m11 bolts 1-10 to 22lbs, then a second pass to 90 DEGREES, then a third pass to 70 DEGREES. Then tighten the m8 bolts 11-15 to 22 lbs.

speedtigger

iTrader: (16)

This is what I have read most too.

Camaroz

iTrader: (2)

Straight From AllData for a 01 SS


First Pass all M11 Bolts in Sequence 22 ft. lbs.

Second Pass all M11 Bolts in Sequence 90 degrees

Final Pass all M11 Bolts in Sequence 90 degrees
Note: Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder Head

Final Pass M11 Medium Length Bolts 50 degrees
Note: at the Front and Rear of Each Cylinder Head in Sequence

M8 Inner Bolts in Sequence 22 ft. lbs.

99slobird

iTrader: (1)

I sa your lucky if you break a bolt ..... I cracked the block instead

speedtigger

iTrader: (16)

I don't know anything more credible than AllData. Texas speed told me 90 & 90 too.

I always hate when there is conflicting information out there.

vettenuts

iTrader: (4)

Depends on the year, later cars have equal length bolts if I am not mistaken. Do you have the service manual for the year of motor that you are working on?

01ssreda4

iTrader: (96)

I ripped most of the threads out of one hole....not fun

This is the way my Haynes says to do it, and thats the way I have always done it.

speedtigger

iTrader: (16)

I just went by the dealership and had my buddy pull it up on AllData. We looked up a 2004 Cadillac Escalade Vin Code "N". (LQ9) The specs were:

22lbs
then 90 degrees
then 70 degrees

Since I saw that with my own eyes on the most credible source that I know, that is what I am going to use to torque mine unless somebody makes me aware of something that I did not account for.

Edit: From what I understand, in 2004 they changed the design so that all bolts are the same length (4" or 100MM). This may explain why I have found different torque specs than others who may be working on older motors with different length head bolts. All my research has been for the 2004 and newer engines with single length 4" head bolts.

garygnu

are you using ARPs bolts?

nazztman4739

iTrader: (6)

yes arp bolts when u torque the second and 3 time do u use a standard ratchet or the torque wrench

chrisfrost

iTrader: (8)

The second and third passes are degrees of rotation (360deg a full circle) so if You don't have and are'nt going to buy an angle gauge then make 1 out of construction cardboard and put a hole at the center for You're rachet/socket . Basically a compass or protractor but bigger as to be more accurate . I would use a regular 1/2 inch rachet as the more You use a torque wrench the less in calibration it becomes especially using it in reverse to remove head bolts .....etc good luck

ryle

iTrader: (19)

Hold on man... If you are using ARP bolts you could possibly do some damage if you are using the degree method. From my understanding that method is for use with stock GM Torque to Yield head bolts...

ARP BOLTS DON'T STRETCH LIKE GM BOLTS!

I have always used the torque specs on this page and never had a problem. Look under the section that says in Yellow: If Using ARP Headbolts

Camaroz

iTrader: (2)

I agree! Read the instructions that come with ARP headbolts.

S10xGN

iTrader: (11)

Actually, ARP has a new web page just for instructions. Plug in your kit number and download a PDF for that kit.