Conversions & Swaps LSX Engines in Non-LSX Vehicles
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going to the dark side *engine is in*

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Old 07-27-2011, 08:53 PM
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Originally Posted by the_merv
T56 stuff isnt cheap..that's why I'm sitting on mine..
Too easy.....

Originally Posted by 97badass
if i get my t56 sold i can pick me up the heads to go along with the intake all im getting with this check is intake and wiring harness and ecm. found one for $150 complete harness and ecm from a 99 camaro
That's an awesome deal, good find!
Old 07-28-2011, 12:20 AM
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the guy wont text me back with his info to get it... but on a side note i think my t56 is going to sell soon! i hope to have a complete engine soon!!!
Old 07-28-2011, 11:45 AM
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With the sale of a T56 you should be able to fund a good part of the motor now.
Old 07-28-2011, 12:09 PM
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wont even pay for my heads...
Old 07-28-2011, 07:51 PM
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went shopping tonight, slp intake kit, 317 heads offset rocker and stands set cam bearings 8 coils 2 brackets and valve covers and even more knowledge!!!! anyone wanna buy some 317 heads?
Old 07-28-2011, 08:44 PM
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Originally Posted by 97badass
wont even pay for my heads...
Man, you are giving away your t56!! Complete like you're selling it with the clutch and all, I usually see them going for at least $1200. Don't forget alot of 3rd gen guys and people with older sbc/bbc engines want them for conversions. Maybe you are just pricing it low for a quick sell. It may benefit you more to see if someone local wants it for an A4 to M6 swap where you could possibly get their transmission and convertor. If so ya'll could possibly swap radiators and you could get the cooler lines too? Along with the shifters and consoles you could swap. T56 bring more than A4's so you should be able to either get a nice stall in the deal or their 4L60E plus some cash. Even if you don't you'd still be money ahead of selling yours for $800. Also don't forget you could easily use an LT1 A4 as long as you grabbed a 6.0 truck flexplate, spacer, and the longer bolts.
Old 07-28-2011, 08:59 PM
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$45 for flexplate spacer and bolts everyone told me im too high on the swap... complete swap i want 1k tranny bell and clutch is $800+ shipping... if thats all i need for an lt1 4l60e my buddy has one dirt cheap...
Old 07-28-2011, 09:56 PM
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Originally Posted by 97badass
wont even pay for my heads...
LS3 heads are $714 shipped, brand new pair.
Old 07-28-2011, 10:05 PM
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called chevy today, ls3 heads are on backorder for at LEAST a month and a half
Old 07-28-2011, 10:38 PM
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the 4l60e is cheap bc its blown up... needs a rebuild...
Old 07-28-2011, 10:42 PM
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Originally Posted by 97badass
called chevy today, ls3 heads are on backorder for at LEAST a month and a half
National backorder? You might want to call some other suppliers.
Old 07-29-2011, 12:11 AM
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Them things are all over..and so are 4L60E's...
Old 07-29-2011, 06:22 AM
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yeah 4l60s are easy to come by, and yes national backorder, i dont know what im gonna do with the 317 heads i got yet but they are listed for sale, hope they sell soon.
Old 07-29-2011, 06:38 AM
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so far on my build i have
lq4 shortblock
truck coils and brackets
coil harness
valve covers
offset rocker set
cam bearings
(317 heads not being used)
ls3 intake, injectors and rail
waiting on k member, flexplate, spacer, and bolts

total cost out of pocket is too low for me to tell, but im still WAY under 1k bucks total build is gonna cost about 1500
Old 07-29-2011, 06:52 AM
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i wish the mobile site had edit... thats just the engine no trans
Old 07-29-2011, 07:20 AM
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transmission sold so im going to order my heads today and wait for them to show up in a couple months :nutz:
Old 07-29-2011, 08:32 AM
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Originally Posted by 97badass
transmission sold so im going to order my heads today and wait for them to show up in a couple months :nutz:
Hold up before you wait on a back order and let me do some checking for you. There are several different L92 / LS3 style head part numbers made. Is there a particular application you are looking for? I'm sure some would be available. From what I understand, they all flow about the same thing and are pretty much the same casting. I can check availability in seconds here at work. Both direct from GM & from other dealer's stock.
Old 07-29-2011, 10:06 AM
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12600821would be best. Better valves and cheaper.
Old 07-29-2011, 03:37 PM
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Originally Posted by 93Z2871805
12600821would be best. Better valves and cheaper.
I can't come up with that number at all--Not by doing a casting number conversion or as a GM part number (even checked discontinued numbers).

What I did come up with as current numbers are:

12629063 - LS3 / L99 Assembly

12629064 - L92 / L76 / LY6 Assembly

12629051 - LS3 / L99 / L76 / LY6 / L92 Bare Head

I was shocked to see the LS3 head assembly (with it's lightweight valves and better springs) being cheaper at the moment that the L92 assembly by a good margin. They are currently cheaper than the bare head also.

Stock is readily available for the LS3 or L92 Assemblies. The bare heads are available, but farther up the chain right now. (From the parts plant directly.) I don't see who would buy bare heads for more than the LS3 assembly costs anyway??

Guess I'm bragging, but I bought my pair new, bare with valves only for $450 shipped off Ebay a couple years ago. Suits me 'cause I will use new springs anyway.
Old 07-29-2011, 05:26 PM
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so how much are the ls3 assemblies you found?


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