2004 lq4 block with 241 heads

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Nov 13, 2019 | 07:48 AM

andrew perez

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2004 lq4 block with 241 heads

I’m curious if anyone knows which set of arp bolts I need. I don’t wanna take a guess and get the wrong ones

Nov 13, 2019 | 08:09 AM

psicko

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From: HTown, Texas

Depends on the block. Check the block to see if all the larger head bolt holes are equal length or not.

Nov 13, 2019 | 10:30 AM

drdave88

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From: Waterford, MI

You'll have to pull the head bolts to make sure. I ran into this on my 04 LQ4 block. It was a later build so all the head bolts are equal length. I wasn't able to use the head studs from the LS1 block I had, which were long/short style. 2 bolts on either end of the head will be shorter than the rest of the bolts. I forget if they are the ones under the valve cover or by the exhaust.

Part numbers for the Hex Head Bolts (not studs)
Early long/short style: 134-3609
Later equal length style: 134-3610