LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

Starting 6.0L swap. Crankshaft flange depth??

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Old Jan 15, 2008 | 07:45 PM
  #1  
Blownz28man's Avatar
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From: Elk City OK
Car: 92 25th anv z28
Engine: 346 TC78 Turbo
Transmission: 4L80E
Axle/Gears: 3.25 9"Nodular, Strange axles
Starting 6.0L swap. Crankshaft flange depth??

I've got a question can't find an answer any where. So my 6.0l Has the 1.25 flange.I know theres an early and late model.which are two different sizes. Would i need to run a spacer to adapt it to my 700r4? All help would be appriciated. Thanks!!

Last edited by Blownz28man; Jan 15, 2008 at 07:46 PM. Reason: forgot info
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Old Jan 15, 2008 | 08:51 PM
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From: Bondurant, IA
Re: Starting 6.0L swap. Crankshaft flange depth??

I beleive Hughes makes a flexpalte to be able to bolt an LS engine to a 700...I'll edit my post when I find the p/n

EDIT: I found the parts...but I'm not going to post the p/n as I'm not sure which ones to use. Do a search on Summit for "Hughes flexplate" and you should find it.

EDIT EDIT: I look more at that summit stuff and it looked like it was only for a turbo 350 and 400...so keep digging! I'd do a search on LS1tech, they know their **** over there.

Last edited by fenton06; Jan 15, 2008 at 09:06 PM.
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Old Jan 17, 2008 | 09:21 PM
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Blownz28man's Avatar
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From: Elk City OK
Car: 92 25th anv z28
Engine: 346 TC78 Turbo
Transmission: 4L80E
Axle/Gears: 3.25 9"Nodular, Strange axles
Re: Starting 6.0L swap. Crankshaft flange depth??

Come on nobody? How strong are the crankshaft/flexplate adapters?
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Old Jan 18, 2008 | 02:06 PM
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From: Lake Elsinore,CA
Car: 1999 F-1 Camaro Conv 1990 Iroc-Z
Engine: LS1/L98
Transmission: A4/A4
Axle/Gears: 3.23/3.27
Re: Starting 6.0L swap. Crankshaft flange depth??

Here's a link for you.

http://www.gmcopo.com/engineswap.htm
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Old Jan 18, 2008 | 05:29 PM
  #5  
Blownz28man's Avatar
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From: Elk City OK
Car: 92 25th anv z28
Engine: 346 TC78 Turbo
Transmission: 4L80E
Axle/Gears: 3.25 9"Nodular, Strange axles
Re: Starting 6.0L swap. Crankshaft flange depth??

Man you a life saver! Thanks so much!
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