Mock up LSX motor

[MystryGuy]

I'm helping a friend mock up a motor in his car and he hasnt decided firm if hes going 5.7/6.0/6.2 yet. Is there any outer dimension differences if we mocked up a 5.3 to do the turbo plumbing and then went to a 6.2 later? I know the front accessory mounting plate is different, but anything else?

[Sean]

I'm helping a friend mock up a motor in his car and he hasnt decided firm if hes going 5.7/6.0/6.2 yet. Is there any outer dimension differences if we mocked up a 5.3 to do the turbo plumbing and then went to a 6.2 later? I know the front accessory mounting plate is different, but anything else?

aside from a few accesory hole diference the one potentially aggervating differnce could be the 6.0 iron to 5.7 aluminum deck hiehgts. 6.0 iron motors " i don't know if 5.3's are the same" tend to be 5-10 thousandths shorter then the aluminum blocks. aside from that. not really.

[Pure84GTT]

yupp you should be fine with the 5.3

[OnyxSSS]

knock sensor location?

[dave89iroc]

knock sensor location?

did they move them from under the intake?

[Pure84GTT]

knock sensor location shouldnt be an issue in using it for mock up. however the 5.3 will be in the valley not on the side of the block