LMM: crank girdle when to use.

[CRAWLEN]

Hi guys, in the final stages of build my lmm with all the good bits. And been thinking about a crank girdle. At what power level should one be used ? I don't plan on going past 800hp. (Maybe we will see if I twin turbo this this)



If i was to put a crank girdle on would i have to go back and re line hone the caps ? As that's already been done.


I also feel like I should of put billet main caps in but ehh a bit late now. From what I have read standards are fine for 800hp is that correct?

 

[NC-smokinlmm]

I believe you have to give it to the machine shop when they do the work...

 

[Bdsankey]

If you want to add a girdle on stock main caps you have to machine the caps for clearance. If you have billet main caps already you can put a girdle in but it is best to do it at the time the block is at the machine shop because everything you bolt onto the block can change the bores/alignment, especially something to stiffen the main caps/bottom of the block.

 

[FROGMAN524]

Do girdles help that much? Doesn’t an LML block have more webbing and support than previous blocks?


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[Chevy1925]

at 800hp, it wont hurt but you wont see the true benefit. as said, your probably running stock main caps so it would all need to go back to machined. You "shouldnt" need a line hone again if the shop is good but its never a bad idea. you just have to be real careful not to open those mains up too much.

 

[CRAWLEN]

at 800hp, it wont hurt but you wont see the true benefit. as said, your probably running stock main caps so it would all need to go back to machined. You "shouldnt" need a line hone again if the shop is good but its never a bad idea. you just have to be real careful not to open those mains up too much.

Cheers for that mate, yeah it's only just crossed my mind I should of put a girdle on. But couldn't find any real info at what stage power to run one.


But going off what you have said there should be fine with out one hey ?

 

[Chevy1925]

Cheers for that mate, yeah it's only just crossed my mind I should of put a girdle on. But couldn't find any real info at what stage power to run one.


But going off what you have said there should be fine with out one hey ?

opinions will vary but in what ive seen at that power level, as long as you are not trying to spin the thing to the moon, i wouldnt worry about it.