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Wich LQ9 block do I have?

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Old Jan 3, 2011 | 10:30 AM
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Question Wich LQ9 block do I have?
I have a LQ9 370 that I bought used. I need ARP head studs, but theyre asking me if its before or after 2004 block. How do I tell?
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Old Jan 3, 2011 | 10:33 AM
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Need to find out if the outer middle row bolt holes are shorter then the rest or are they all the same size.
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Old Jan 3, 2011 | 01:09 PM
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Cool thanks... so wich one is wich?
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Old Jan 3, 2011 | 01:48 PM
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Early blocks had short bolts, later blocks had all the same length.
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Old Jan 3, 2011 | 02:43 PM
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Originally Posted by raven154
Early blocks had short bolts, later blocks had all the same length.
That sounds backwards to me. My 98 block had all equal length head bolts. The TSP SB I bought was built off a 2004 GTO block and had different lenth head bolts and were cheaper.
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Old Jan 3, 2011 | 03:06 PM
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2004 and later blocks used same length studs or bolts
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Old Jan 3, 2011 | 03:17 PM
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My 2004 LS6 had all the same length bolts. The 2003 LS6 block I bought to replace my broken 2004 LS6 block used the long and short.
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Old Jan 3, 2011 | 05:46 PM
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Later models use all short bolts, early 04 and down use 2 short bolts on the outers in the middle row, the rest of the big bolts are really long, about 6 inches. My 04 LS6 used the early style.
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Old Jan 4, 2011 | 08:40 PM
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OK I just measured them. The holes are all 2 3/4" deep. So I have 04' + up. Does this sound right?
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Old Jan 4, 2011 | 08:44 PM
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most of the blocks well all ive seen so far had date castings in them and were spot on for the year they were from
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Old Jan 4, 2011 | 09:05 PM
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Originally Posted by NC98Z
That sounds backwards to me. My 98 block had all equal length head bolts. The TSP SB I bought was built off a 2004 GTO block and had different lenth head bolts and were cheaper.
didnt happen. sorry...a 98 block will have 2 long and the rest short
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Old Jan 4, 2011 | 10:03 PM
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Originally Posted by THE LAST Z
OK I just measured them. The holes are all 2 3/4" deep. So I have 04' + up. Does this sound right?
Sounds like you have 2004+ block
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Old Jan 5, 2011 | 12:14 PM
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Originally Posted by bww3588
didnt happen. sorry...a 98 block will have 2 long and the rest short
Actually a 98 block will have eight long, two short, and 5 really short(per side). Sorry :
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Old Jan 6, 2011 | 12:42 PM
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-OK smart ***...sorry
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Old Jan 6, 2011 | 01:10 PM
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Originally Posted by THE LAST Z
OK I just measured them. The holes are all 2 3/4" deep. So I have 04' + up. Does this sound right?
Just do what i did ....... get a long straw or some type of pencil or a screw driver

editdo it without the head on though ....ive posted a 2nd pic of the holes without the head


Now you see the pic....insert the pen/straw or whatever your using into hole number 10 and 3 if they are both the same size then its going to be the 04 and up .... if 10 is shorter then 3 then its pre 04



Last edited by txh0tb0i972; Jan 6, 2011 at 01:16 PM.
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