LT1-LT4 Modifications 1993-97 Gen II Small Block V8

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Old Oct 11, 2007 | 01:24 AM
  #21  
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Good info up there..

Originally Posted by NemeSS
.030 over 6.0= 365ci
6.0 .030 over is a 370 cid Engine..
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Old Oct 11, 2007 | 10:17 AM
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well I think you guys have sold me on the swap! but I'm affraid it will take me a while to get all the parts together and make it happen. Maybe if the wife will let me take a small loan I could go out and start rounding it all up!
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Old Oct 11, 2007 | 02:27 PM
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Man that is some bad news... I can't believe that I can't use my LT1 T-56. Its gonna take me a while to either sell my T-56 or save the money up for an LS1 T-56! Good thing I have a daily driver
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Old Oct 11, 2007 | 08:53 PM
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do what im doin look for a donar car ....it wont be that much in the long run if u sell ur lt1 motor and trans and then part out the donar car after ur done with it ....if u can find a decent donor
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Old Oct 11, 2007 | 09:28 PM
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I have been pondering to goin to M6..but parts cost for that is one of the major factors..
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Old Oct 11, 2007 | 09:49 PM
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Well I guess my problem is solved! I just found a 2001 Trans Am T-56 with decent miles on it for 1,600 Not too shabby. My second purchase of many for the LS1 swap!
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Old Oct 11, 2007 | 09:59 PM
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Originally Posted by Cammed95Z28
Well I guess my problem is solved! I just found a 2001 Trans Am T-56 with decent miles on it for 1,600 Not too shabby. My second purchase of many for the LS1 swap!
what what a damn steal!!
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Old Oct 11, 2007 | 10:10 PM
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Originally Posted by the_merv
Good info up there..



6.0 .030 over is a 370 cid Engine..
thats y meant.. 370ci
long day at work..
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Old Oct 11, 2007 | 10:25 PM
  #29  
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I was pondering a LS1/T56 swap. I've had my Racetronix P&P system for about a year. Would I need to change that with an LS1 swap? I was planning on H/C/I, that's the reason for the fuel pump upgrade.
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Old Oct 11, 2007 | 10:40 PM
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Don't know if anyone mentioned it yet but, along with that K-member, you also need an LS1 steering rack.
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Old Oct 12, 2007 | 11:10 AM
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Originally Posted by chuckyt1
Don't know if anyone mentioned it yet but, along with that K-member, you also need an LS1 steering rack.

Yeah thats what I hear, does anybody have the part number for the LS1 steering rack?
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Old Oct 13, 2007 | 05:00 AM
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you can't use an lt1 t-56? i thought the only diff was the bellhousing?
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Old Oct 13, 2007 | 05:10 AM
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Originally Posted by Cheap Guy
I was at Berger Chevrolet a few days ago and asked what replacement engine they have for LT1's. I was told that there is a specific book that details the LT1 to LS1 swap since there really is NO direct replacement for the LT1. It's called the LS1 Engine Kit Installation Guide, GM part no. 88959384. Obviously I haven't looked at it but maybe it's a start.
Yea I looked around the net for this, apprently it's a straight up guide to put ls engines in older vehicles maybe it would be pretty usefull.

btw any one get a parts cost estimation for all the crap required for the swap?
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Old Oct 13, 2007 | 03:02 PM
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For anyone looking for a low miled LS1 engine for the swap... Pm me
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Old Oct 13, 2007 | 05:40 PM
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Originally Posted by Akira_X
Yea I looked around the net for this, apprently it's a straight up guide to put ls engines in older vehicles maybe it would be pretty usefull.

btw any one get a parts cost estimation for all the crap required for the swap?
I have an Excel spreadsheet of mine right now and its lookin right around 6500 to 7K... But seeing as I sold my shortblock for 2500 and looking to sell my heads for 750-1000.... Its really not that bad.
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Old Oct 13, 2007 | 05:54 PM
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Originally Posted by Cammed95Z28
I have an Excel spreadsheet of mine right now and its lookin right around 6500 to 7K... But seeing as I sold my shortblock for 2500 and looking to sell my heads for 750-1000.... Its really not that bad.
Will you PM me all the info you have on your heads? I might be seriously interested in them.

As far as speartech doing your harness, I got in touch with them last year about doing the same harness for my 94 Z28, and they told me that they really weren't doing much with the LS1 harnesses anymore. If you want, I can forward you the email I got from them about modding the harness, provided I can find it.
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Old Oct 13, 2007 | 07:54 PM
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Originally Posted by Cammed95Z28
I have an Excel spreadsheet of mine right now and its lookin right around 6500 to 7K... But seeing as I sold my shortblock for 2500 and looking to sell my heads for 750-1000.... Its really not that bad.
damn 7k? how much are you looking to buy the engine for?
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Old Oct 13, 2007 | 10:56 PM
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this is what my sheet looks like.

Engine.....................................2000
LS1 T56...................................1600
LS1 Kmember..............................100
LS1 steering rack and shaft...........200
Aeromotive FPR and fittings...........250
LS7 Clutch and flywheel................500
LS1 Slave cylinder and pilot bearing.125
Headers......................................500
PCM and Wiring Harness.................650
Misc(alt bracket, and little things)....200


That sums up to about 6000 and then maybe 1000 in labor or so. Kinda pricey but not so bad after i sell my engine and trans.
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Old Oct 14, 2007 | 09:28 AM
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Originally Posted by Cammed95Z28
this is what my sheet looks like.

Engine.....................................2000
LS1 T56...................................1600
LS1 Kmember..............................100
LS1 steering rack and shaft...........200
Aeromotive FPR and fittings...........250
LS7 Clutch and flywheel................500
LS1 Slave cylinder and pilot bearing.125
Headers......................................500
PCM and Wiring Harness.................650
Misc(alt bracket, and little things)....200


That sums up to about 6000 and then maybe 1000 in labor or so. Kinda pricey but not so bad after i sell my engine and trans.
WOW, that's more than I thought it would be, probably because I didn't think you'd need a new tranny and assorted parts. That's "only" three grand less than the Lingenfelter LT1 I was "somewhat" considering.
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Old Oct 14, 2007 | 01:26 PM
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Originally Posted by Cammed95Z28
this is what my sheet looks like.

Engine.....................................2000
LS1 T56...................................1600
LS1 Kmember..............................100
LS1 steering rack and shaft...........200
Aeromotive FPR and fittings...........250
LS7 Clutch and flywheel................500
LS1 Slave cylinder and pilot bearing.125
Headers......................................500
PCM and Wiring Harness.................650
Misc(alt bracket, and little things)....200


That sums up to about 6000 and then maybe 1000 in labor or so. Kinda pricey but not so bad after i sell my engine and trans.
eh I was gonna get an engine off of ebay, they are not that expensive there. Also I was hoping to use the t-56 from my lt1 and just change the bellhousing and buy the LS1 drive shaft.
That would knock a bit off that list if I could...
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