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L92, modifications to fit in a C5???

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Old 03-13-2007, 12:49 PM
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Question L92, modifications to fit in a C5???

What all has to be pulled, ground-off, and/or crimped to make a L92 short-block fit in a C5???



Old 03-13-2007, 01:27 PM
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Mechanically it is just one engine mount or block that need an "adjustment". Clutch?
The rest of the knock sensor, cam sensor, TB stuff is cable related.
Old 03-13-2007, 02:11 PM
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Originally Posted by See5
Mechanically it is just one engine mount or block that need an "adjustment". Clutch?
The rest of the knock sensor, cam sensor, TB stuff is cable related.
When say "adjustment", do you mean ground-off???

Clutch would be good info also....

Old 03-13-2007, 02:35 PM
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You must either grind a lug off one side of the block or cut the engine mount to clear the lug. I chose to cut the engine mount but neither are a big deal.
The choice of clutch requires a LS1 pilot bearing and slave and TO, not LS7 or LS2 even with LS7/2 FW, or you can use heavy duty LS1/6 clutch/flywheel.
Old 03-13-2007, 03:00 PM
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Originally Posted by SideStep
When say "adjustment", do you mean ground-off???

Clutch would be good info also....


Let me get a pic for you. Hold on....
Old 03-13-2007, 03:45 PM
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Originally Posted by 2c5s
Let me get a pic for you. Hold on....

Sweet that would be great...
Old 03-13-2007, 04:05 PM
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Originally Posted by SideStep
Sweet that would be great...

My wife has the camera, sorry.
Old 03-13-2007, 04:12 PM
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Originally Posted by 2c5s
My wife has the camera, sorry.
Noooooooooo... oh well... any suggestions on what I should use to cut the stud/lug off with???

Also, is this the only alteration/modification that needs to be done...


Thanks any info...
Old 03-16-2007, 10:24 PM
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Originally Posted by See5
You must either grind a lug off one side of the block or cut the engine mount to clear the lug. I chose to cut the engine mount but neither are a big deal.
The choice of clutch requires a LS1 pilot bearing and slave and TO, not LS7 or LS2 even with LS7/2 FW, or you can use heavy duty LS1/6 clutch/flywheel.

Why can't you use the LS2 fwheel with the LS7 clutch? I have that setup in my car now and it works great, I have an LS1 though.
Old 03-17-2007, 06:12 AM
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Originally Posted by Mike94ZLT1
Why can't you use the LS2 fwheel with the LS7 clutch? I have that setup in my car now and it works great, I have an LS1 though.
You cetainly can just can't use the LS7 pilot bearing.
Old 03-17-2007, 08:24 AM
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L92 mods are exactly the same as LS2 into C5. No difference including the requisit front cover/sensor and timing set change.

Dave
Old 03-17-2007, 09:45 AM
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Do you know if this lug must be ground off when using a LS7 block?

Originally Posted by See5
You must either grind a lug off one side of the block or cut the engine mount to clear the lug. I chose to cut the engine mount but neither are a big deal.
The choice of clutch requires a LS1 pilot bearing and slave and TO, not LS7 or LS2 even with LS7/2 FW, or you can use heavy duty LS1/6 clutch/flywheel.
Old 03-17-2007, 09:58 AM
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Originally Posted by See5
You cetainly can just can't use the LS7 pilot bearing.

I totally read what you said wrong, I thought you were saying you couldn't use the LS2/LS7 clutch.
Old 03-18-2007, 07:50 AM
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Originally Posted by VortechC5
Do you know if this lug must be ground off when using a LS7 block?
Yes, or modify the LS1 engine mount.
Old 03-18-2007, 11:31 AM
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Thanks I thought that would be the case.

Somewhere on here I saw a picture of what needed to be modified on the LS2 block but I can''t find it now...


Originally Posted by See5
Yes, or modify the LS1 engine mount.
Old 03-18-2007, 01:09 PM
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Originally Posted by VortechC5
Thanks I thought that would be the case.

Somewhere on here I saw a picture of what needed to be modified on the LS2 block but I can''t find it now...
If someone could find and post those I would really appreciate it... I have looked also...


Old 03-18-2007, 02:40 PM
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Found it!

Here is the post:

https://ls1tech.com/forums/showthrea...ht=motor+mount

And here is the picture:



Originally Posted by SideStep
If someone could find and post those I would really appreciate it... I have looked also...


Old 03-18-2007, 04:11 PM
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Originally Posted by VortechC5
Found it!

Here is the post:

Sweet thanks...
Old 03-18-2007, 09:48 PM
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The best way to grind that boss off is to use a skill saw equipped with a carbide blade... That boss will be gone in 60 seconds... Don't expect it to be pretty though...
Shirl Dickey
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Old 03-19-2007, 08:05 AM
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Originally Posted by MrEracer
The best way to grind that boss off is to use a skill saw equipped with a carbide blade... That boss will be gone in 60 seconds... Don't expect it to be pretty though...
Shirl Dickey
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Or you can cut the mount:



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