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ls2 accessories drive on an ls3 block?

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Old Apr 22, 2015 | 10:13 PM
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Default ls2 accessories drive on an ls3 block?

Is their any way possible to run the ls2 gto accessories belt configuration on an ls3 block?

Would like to go with ls3 forged shortblock over the ls2
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Old Apr 23, 2015 | 10:51 AM
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The blocks themselves are the same externally, so you can put whatever accessories and/or belt pattern that you want.

There limitations to what accessories you can use and where really depends on the engine placement within the engine bay (and its relation to other components), not the actual engine block.
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Old Apr 24, 2015 | 01:44 AM
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Originally Posted by redtan
The blocks themselves are the same externally, so you can put whatever accessories and/or belt pattern that you want.

There limitations to what accessories you can use and where really depends on the engine placement within the engine bay (and its relation to other components), not the actual engine block.
Just wanted to make sure. What about the motor mount location on the block? Is it the same as the ls2 (GTO).

In general is there anything different that I have to keep in mind when switching over too an ls3? Keeping in mind this is for a late model GTO.
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Old Apr 24, 2015 | 07:17 AM
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Easy bolt in.


Had a LS3 in our Monaro for almost 4 years.
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Old Apr 24, 2015 | 07:23 AM
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If you're putting the engine (just a different block) in the same exact car then it shouldn't matter as the accessories will go on in the same spots as the previous LS2 and thus fit within the frame.
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Old Apr 27, 2015 | 03:41 AM
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Originally Posted by ViceCityPerformance
Is their any way possible to run the ls2 gto accessories belt configuration on an ls3 block?

Would like to go with ls3 forged shortblock over the ls2
It will work without any problems... Just use everything from the GTO (including the damper) and make sure you plug the dip-stick hole in the LS3 block.
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Old May 20, 2015 | 07:43 PM
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Originally Posted by Jontall
It will work without any problems... Just use everything from the GTO (including the damper) and make sure you plug the dip-stick hole in the LS3 block.
Cant I just reuse my dipstick?
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Old May 21, 2015 | 01:20 AM
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Originally Posted by ViceCityPerformance
Cant I just reuse my dipstick?
The GTO oil pan has a dip stick hole in it from the factory and the block dip stick hole has a small freeze plug in it. If you are using the GTO oil pan, than the LS3 block oil dip stick hole must be plugged. GM part # 12557520
Look at this picture to understand:


Attached Thumbnails ls2 accessories drive on an ls3 block?-1.jpg  
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