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anyone have any ARP head stud sizes?

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Old May 29, 2008 | 11:41 AM
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Default anyone have any ARP head stud sizes?

i bought a set of head studs from a buddy of mine, the head studs are from a LS2 head, whereas i have a LS1 head. I need to find out the stud size for the 4 shorter bolts on each head (1 front and one rear short bolt for each head). ARP has tried helping me but said I need a measurement. Texas-speed also hasnt responded to any emails. Anyone have a clue?
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Old May 29, 2008 | 12:49 PM
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I have a Corvette 99-00 C5 parts listing here in pdf format.
Head bolt info

16x 12560744 (M11 x 2.0 x 155.0)

4x 12560745 (M11 x 2.0 x 100.0)

10x 12558840 (M8 x 1.25 x 45.0)


Also this

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Old May 29, 2008 | 01:27 PM
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awesome, i think thats what i need. thanks alot man! will have to view that picture at home.
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Old May 29, 2008 | 03:02 PM
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actually, is the head stud gonna be the same size as the stock head bolts? i was thinking that the length may be different.
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Old May 29, 2008 | 03:17 PM
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ok, reading threads and I need to verify. I read somewhere that the LS2 head studs were all shorter than the LS1 version. Is this the case? Anyone have any ideas? I guess TSP and LS1 speed are all closed this week or something... ARP didnt help much.
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Old May 29, 2008 | 10:58 PM
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Greg, it's Ray... I'll mic mine tomorrow for ya and let ya know....
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Old May 29, 2008 | 11:04 PM
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thanks Ray, but i got it figured out. the LS2 blocks head bolts arent drilled as deep as the LS1 block, so Adam's studs are too short for my block. gotta get a LS1 kit instead.
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Old May 29, 2008 | 11:11 PM
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Originally Posted by GregWS6&z28
ok, reading threads and I need to verify. I read somewhere that the LS2 head studs were all shorter than the LS1 version. Is this the case? Anyone have any ideas? I guess TSP and LS1 speed are all closed this week or something... ARP didnt help much.

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Old May 30, 2008 | 03:41 PM
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Not to thread hijack but I was wondering when you use head studs can the heads still be removed with the motor inside the car?
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Old May 30, 2008 | 03:50 PM
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Originally Posted by JFM-jr
Not to thread hijack but I was wondering when you use head studs can the heads still be removed with the motor inside the car?
thats a good question i want to know also.
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Old May 30, 2008 | 05:16 PM
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Originally Posted by Disturbed Bird
thats a good question i want to know also.
yeah, on an Fbod, you can remove the heads with studs still in
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Old May 31, 2008 | 12:14 PM
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How do you determine what year block you have? Mine is a used lq4 if that matters.
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Old May 31, 2008 | 02:36 PM
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get the number off the side of the block is one way.
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