ls9 block

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sccagt1racer
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ls9 block

Post by sccagt1racer » Thu Nov 29, 2018 6:33 am

I see the ls9 12623969 bare block has droped from 4000 to 1900 in price. It has oil squirters built in and can handle 635 plus hp. Is there any reason not to use this block over a standard ls3 block for a carbed high rpm engine build?

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Re: ls9 block

Post by jed » Thu Nov 29, 2018 7:28 am

I can't see any reason why u can't. Go for it.

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Re: ls9 block

Post by CGT » Thu Nov 29, 2018 8:36 am

Sounds like a bargain. They are definite advantages over a LS3 block.
"How or Y do you think I get all this $hit, I read all of you all builds and desktop dyno them with all the correct info and I've got your build."

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Re: ls9 block

Post by Newold1 » Thu Nov 29, 2018 8:46 am

That's a massive price drop for a great LS block for LS engine builds! This will keep the LS engine performance market rocket blasting into the future!
No wonder this performance engine platform is so frigg'in huge! =D>
The Older I Get, The Dumber I Get :wink:

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Re: ls9 block

Post by A_VAS » Fri Nov 30, 2018 1:12 am

uses larger head bolts than other LS, so depending on what head you plan to use, may need to open the holes up a bit in the head. Not a biggie
I wish the LS7 blocks would come back down to earth in price.
too lazy to make power w/o boost

sccagt1racer
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Re: ls9 block

Post by sccagt1racer » Sat Dec 01, 2018 2:31 pm

A_VAS wrote:
Fri Nov 30, 2018 1:12 am
uses larger head bolts than other LS, so depending on what head you plan to use, may need to open the holes up a bit in the head. Not a biggie
I wish the LS7 blocks would come back down to earth in price.
Where are you finding that information on the head bolts?

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Re: ls9 block

Post by af2 » Sat Dec 01, 2018 10:07 pm

GURU is only a name.
Adam

Newold1
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Re: ls9 block

Post by Newold1 » Sun Dec 02, 2018 11:51 am

This is also a reason if you are going to add serious boost to standard LS blocks with supercharging or turbo charging you should be getting rid of the GM stock head bolts and use ARP head studs for increased clamping under stretch. GM obviously discovered this with the LSA and L9A engines and went to a 12mm higher strength bolt.
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Re: ls9 block

Post by A_VAS » Mon Dec 03, 2018 3:55 pm

sccagt1racer wrote:
Sat Dec 01, 2018 2:31 pm
A_VAS wrote:
Fri Nov 30, 2018 1:12 am
uses larger head bolts than other LS, so depending on what head you plan to use, may need to open the holes up a bit in the head. Not a biggie
I wish the LS7 blocks would come back down to earth in price.
Where are you finding that information on the head bolts?
I've built 2 LS9 engines, so I found out 'first hand' that the bolts were different when we went to plate hone the blocks
I did not try to fit say a '243' head to those blocks, so I'm not sure if the holes in the head need to be opened up.
I have used the 1/2" stud conversion on a LS block, and that one did need the head bolt holes drilled bigger. 1/2" bolt is 12.7mm vs. LS9 = 12mm
The squirters, strength of the casting, and stronger main cap (steel doweled) make it a very nice block for sub $2K price.
too lazy to make power w/o boost

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