Short block

[PAT]

I know LB7/LLY blocks are the same. But what about putting LLY heads into an LMM? Possible? Impossible? Or am I stupid?

 

[LBZrcks]

It would work fine. I have a friend who used an LMM block with LB7 heads,timing cover, fuel system etc.

 

[blk smoke lb7]

I know the timing cover and reluctor wheel have to be changed,but maybe some could chime in if there is anything else ? Like does the rear adapter plate bolt up or do you have to switch the lly 1?

 

[PAT]

So Jason, do all the passages in the LLY heads match up the the passages in the LMM block?

 

[Tony Burkhard]

They work just fine.

 

[Maricopaagent]

It would work fine. I have a friend who used an LMM block with LB7 heads,timing cover, fuel system etc.

not sure why he would want lb7 heads?

im working on lb7/lly block to lbz heads(injectors)


'Corrected"

 

[LBZrcks]

So Jason, do all the passages in the LLY heads match up the the passages in the LMM block?

Yes.

not sure why he would want lb7 heads?

im working on lb7/lly block to lbz heads(injectors)


'Corrected"

He has an 03' Lb7.

 

[PAT]

Ok. Well thanks for clearing that up for me guys.

One more question... Would there have to be any changes done to get the LLY heads on the LMM? Like the relict or wheel, timing cover etc. or can I just bolt it up and go?

 

[Tony Burkhard]

Need more details... What year truck are you trying to put what year block with what year heads and what year fuel system? This will help give you all the details on what you have to switch.

 

[PAT]

Everything would be from an 05 gmc. And will go into the truck. Not sure the year of the block.

 

[Tony Burkhard]

If your just installing LMM heads on an 05 you will only need to install LMM glow plugs. As long as its an 01 to 05 block.

 

[PAT]

Ok I got the details on the block.
The block is an 09 LMM that a set of 05 LLY SoCal stage one heads would be bolted onto.
This would all be put into an 05 GMC Sierra.

 

[Tony Burkhard]

Ok I got the details on the block.
The block is an 09 LMM that a set of 05 LLY SoCal stage one heads would be bolted onto.
This would all be put into an 05 GMC Sierra.

Ok so than you will have to change the reluctor wheel and the front cover to the 05 parts. And you will have to change the oil cooler adapter to remove the EGR cooler hose fitting.

 

[PAT]

Thanks tony.