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school me on gmpp lsx block

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Old 04-30-2017, 05:16 PM
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Default school me on gmpp lsx block

Can I use everything in and on my 99 ls1 motor in the lsx block
Old 04-30-2017, 11:06 PM
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Heavy as hell. Worth while if you're planning a big cube build.
Old 05-01-2017, 07:54 AM
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Originally Posted by fastlt1
Can I use everything in and on my 99 ls1 motor in the lsx block
Nope.
Old 05-01-2017, 08:11 AM
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They use a gen 4 sensors and locations, correct me if I am wrong.
Old 05-01-2017, 11:30 AM
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Default iron blocks

How much more does lsx block weigh more than iron 6.0 and 5.3
Old 05-01-2017, 11:54 AM
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Originally Posted by fastlt1
How much more does lsx block weigh more than iron 6.0 and 5.3
Roughly 15 lbs or so.....
Old 05-01-2017, 05:38 PM
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Default lsx

So which sensors have changed
​​​​​​​
Old 05-02-2017, 07:39 AM
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Originally Posted by fastlt1
So which sensors have changed
​​​​​​​
Cam sensor up front and knock sensors on the sides like on the Gen IV blocks. The oil pressure sending unit may be different too.
Old 05-02-2017, 02:59 PM
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Default sensors

For cam sensor Do you just need a different timing chain cover and extension wire to run to sensor. I guess they make just a extension wire for knock sensors to reach side of block. But if oil pressure sensor doesn't go behind intake. Where does it go now
Old 05-02-2017, 04:07 PM
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The oil pressure sensor is in the stock location. I opted not to run knock sensors. And yes you need a gen 4 timing cover and also a gen 4 timing set. The timing cover should come with the cam sensor. And then you'll need the cam sensor extension harness. Also a gen ls2 valley cover. It comes with its on rear cover.
Old 05-02-2017, 05:33 PM
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Originally Posted by blk00ss
The oil pressure sensor is in the stock location. I opted not to run knock sensors. And yes you need a gen 4 timing cover and also a gen 4 timing set. The timing cover should come with the cam sensor. And then you'll need the cam sensor extension harness. Also a gen ls2 valley cover. It comes with its on rear cover.
Doesn't the Gen III OPSU screw into the block and Gen IV screw into the valley cover?
Old 05-02-2017, 05:47 PM
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The OPSU in the Gen IV L76, screws into valley cover.
Old 05-02-2017, 08:06 PM
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For the price, I'd rather get a Dart LS SHP Block...
Old 05-03-2017, 01:27 AM
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Default dart

Why would you pick the dart over the gmpp lsx
Old 05-03-2017, 01:38 AM
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Lil John Motorsports have had 3 dart blocks come up eith hairline cracks in them. Therefore i recommend another block over the dart.
Heres a pic of a dart block... look closely
Old 05-03-2017, 01:48 AM
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Are those the aluminum blocks?

The SHP is cheaper than the LSX block... comes with 6-bolt 1/2" head mounting, 4-bolt 7/16" splayed main caps, priority oiling, reuses the stock pan...

Basically it's like getting the topend attachment and bore spacing of the LSX block with the oiling and bottom end attachment of a race-prep SBC. But it uses all LS1 components.

So a lot of the oiling issues with the LS motors goes away and the main cap walk is cleared up by using splayed caps that are substantially beefier. I believe the 1/2" head studs are standard with it as well.

Dart rates the block to 2000HP.
Old 05-03-2017, 06:31 AM
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Yes Jake... its the aluminum dart block.
Old 05-03-2017, 07:14 AM
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Originally Posted by Tuskyz28
Lil John Motorsports have had 3 dart blocks come up eith hairline cracks in them. Therefore i recommend another block over the dart.
Heres a pic of a dart block... look closely
Wasn't that off a car that broke the crank in half?
Old 05-03-2017, 02:14 PM
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I don't think the Aluminum blocks are that great, especially for the price. And Dart rates them lower than the iron blocks at 1500HP I believe?
Old 05-03-2017, 02:25 PM
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Originally Posted by KCS
Doesn't the Gen III OPSU screw into the block and Gen IV screw into the valley cover?
Yeah. I was meaning that you don't have to change it or anything.


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