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ls7 block with ls1 eagle crank?

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Old 08-17-2007, 10:35 PM
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Exclamation ls7 block with ls1 eagle crank?

like the title says, if i do this, can i run the ls1 oil pump and oil pan and front cover, also if i decide to go this route, can all of my accesorys go on my ls7 that came off my ls1?

eagle crank 4'' and pistons
can i use knock sensors in the same place, obviously i would have to get some aftermarket heads, but beside that can i just us all of the parts of my ls1
Old 08-18-2007, 12:08 AM
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Yes.

You will need the pan and pickup for the vehicle type you are putting the engine into (ie truck, fbody, gto, or vette).

I would recommend going with a ported LS6 oil pump -vs- a stock ls1 as it has better flow.

Do NOT get a L76/L92 oil pump as they put out to much pressure for a non-AFM engine.

Actually both SDPC and Texas speed offer shortblocks with the ls7 block, 4" ls1 style crank, rods, pistons, pump, and what not.

Oh and if you are retro'n the LS7 block into a LS1 vehicle you will need to follow the ls1 to ls2 conversion spec's. The LS7 is like the LS2 and uses the cam gear for cam timing -vs- a sensor in the block reading from the cam.

Look through the different stickies and you should get an idea of what is needed to make a wet sump ls7.
Old 08-18-2007, 12:13 AM
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anyone wanna help with a write up or a link to where it says how to retro an ls7 in an fbody, ls1 to ls2 like bring the noise explains
Old 08-18-2007, 12:24 AM
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i just found the sticky thnx any way, i was wondering though, i heard that the ls7 has the ls1 knock sensor location in the same place, if so,that means i wont need extensions for those right, all of the oil system will fit on the ls7 as long as the reluctor wheel is a 24 coreect? correct me if im wrong plz
Old 08-18-2007, 08:03 PM
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No, the knock sensors do get relocated to the sides of the block. You will need the extension harnesses. The harnesses (Katech) make the while operation plug and play. You use the LS2 valley pan instead of the LS1 valley pan. The LS2 valley pan does not have provisions for knock sensors so that is the reason that the relocation is necessary.

SDPC can set you up with everything that you need. That is where my stuff came from.

Originally Posted by themack56
i just found the sticky thnx any way, i was wondering though, i heard that the ls7 has the ls1 knock sensor location in the same place, if so,that means i wont need extensions for those right, all of the oil system will fit on the ls7 as long as the reluctor wheel is a 24 coreect? correct me if im wrong plz
Old 08-19-2007, 12:07 AM
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what about the oil system, can i use the ls1 oil system or will i have to use the ls2 system with the ls2 pan, or can i use the ls1 pan
Old 08-19-2007, 03:55 PM
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The LS1 oil pan will work fine. I converted to the LS2 pan (Corvette) since it has better oil control. The LS2 pan gets rid of the bat wings and makes for more room to install/remove headers, get to the starter, etc.

Make sure that you get your LS7 block drilled for a dip stick. I don't think that they come that way. SDPC took care of that when they did the shortblock.
Old 08-19-2007, 09:39 PM
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what about pcv system?
Old 08-20-2007, 08:39 PM
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I am running the PCV valve that SDPC sent with the short block. It is just a restrictor with no guts in it. I am also running an AMW catch can.
Old 08-20-2007, 09:43 PM
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What's the displacement on this?
Sounds like you can rev the crap out of it.
Old 08-21-2007, 11:08 AM
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Originally Posted by BYE RICE
What's the displacement on this?
Sounds like you can rev the crap out of it.
427 CID Should be able to rev it to 6500 RPMs. To rev the crap out of it, put in a 3.25" stroke crank and solid roller top end.

Keith
Old 08-21-2007, 12:38 PM
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Originally Posted by ls1290
427 CID Should be able to rev it to 6500 RPMs. To rev the crap out of it, put in a 3.25" stroke crank and solid roller top end.

Keith
I guess I need to read up..I didnt realize a 7.0 LS7 & a 5.7 LS1 used the same stroke.
Old 08-21-2007, 12:51 PM
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Originally Posted by BYE RICE
I guess I need to read up..I didnt realize a 7.0 LS7 & a 5.7 LS1 used the same stroke.
The LS7 motor uses a 4.0" stroke crank and the LS1 uses a 3.662" stroke crank.

Keith
Old 08-21-2007, 01:22 PM
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Then how does it = 427 Cu...Wait..You using a 4" crank..DUH!
Okay nevermind.
Old 08-21-2007, 03:08 PM
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Originally Posted by VortechC5
No, the knock sensors do get relocated to the sides of the block. You will need the extension harnesses. The harnesses (Katech) make the while operation plug and play. You use the LS2 valley pan instead of the LS1 valley pan. The LS2 valley pan does not have provisions for knock sensors so that is the reason that the relocation is necessary.

SDPC can set you up with everything that you need. That is where my stuff came from.
I am thinking about doing the SDSC 427 setup w/L92-L76 with my 2002 Formula, I see you have a smallish cam for a 427. Does your combo idle good and calm or is it nasty like most big power engines?
Old 08-21-2007, 08:58 PM
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It idles nicely at 900 with a little bit of lope.

Originally Posted by Caveman
I am thinking about doing the SDSC 427 setup w/L92-L76 with my 2002 Formula, I see you have a smallish cam for a 427. Does your combo idle good and calm or is it nasty like most big power engines?



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