Conversions & Swaps LSX Engines in Non-LSX Vehicles
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Old 11-07-2009, 02:03 PM
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I have an 04 GTO with some mild work done, (see sig). Im going to be transplanting my stock bottem end into my truck (58' chevy apache). I have a set of stock heads for it and plan on a baby cam. I dont want much if any power out of it. I just want a car that runs well, cranks cold and gets good mileage. I will also be transferring my T-56 into the truck as well as try to use the stock supsension and rear end from the goat. I know that sounds crazy but I think it will ride nice and shouldnt be to bad. What Im wondering is how I should go about everything. I would like to do Fuel injection ( I have stock injectors as well) but Im on a budget. (about $8000 total, with paint wheels&tires and all) What should I do about a wiring harness and ECU or should I just say Smurf it and go Carb. Also with the T-56 how much of a pain is that gonna be with all the hydraulics and so on. The GTO doesnt need to keep anything but the ECU and harness. The next tranny will be a th-400 and next rear end will be a 9". I appreciate all the info so be mean.
Old 11-07-2009, 09:15 PM
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My buddy just picked up a 68 C10. We are putting a stock 5.3 in it with a 4l60e. IMO.... Keep the injection as it will help with mileage and driveability. For a harness, there are plenty of standalone aftermarket solutions out there. ECU, you could go with a 411 PCM and drive by cable to keep cost down.
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Old 11-07-2009, 10:18 PM
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Could you please break that down for me. What exactly is a 411 PCM and where would I get one. How easy would it be to tune and I planed on doing a cable driven setup anyway. That drive by wire stuff scares me.
Old 11-08-2009, 06:54 AM
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411 PCMs were used from 99 up to 03(input requested) in Camaros/Firebired/Corvettes and trucks. They have the Red/Blue PCM connectors. Nice thing is that PCM can support drive by wire or drive by cable, it is just a function of the tune. Tuning is straight forward. Nice thing from a wiring standpoint is that there is less wiring involved when compared with the newer Green/Blue PCMs. Hope that helps.
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Old 11-08-2009, 09:31 AM
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everything helps, I appreciate it all. I read in a sticky about a $350 wiring harness that somebody makes. Does anybody have anymore info on this? Also what ECU should I use??
Old 11-08-2009, 08:21 PM
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There are quite a bit of nice harnesses out there. Not too sure about the $350 one. Search standalone harness on ebay you will find quite a bit of stuff.
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Old 11-09-2009, 03:10 PM
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Thanks I really appreciate it. Also if anyone has any info on setting up my tranny that'd be great. I'm pretty nervous about that. Thanks in advance.
Old 11-15-2009, 04:24 PM
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Still have a few questions on this and will be buying parts soon so any help is appreciated. Specifically I need to know about the tranny and how much, if any, electrical stuff there is to go with it and where I should start with my ecu and harness??? Also advice on A/C stuff will help me for this spring when I try to finish it up.
Old 11-15-2009, 07:43 PM
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For the hydraulics you might be able to just reuse all the stuff from the GTO, the electrical on the other hand isn't that hard, but if I were to do it again I would order one of those standalone harnesses from EBAY and use an Fbody computer.
Old 11-15-2009, 09:46 PM
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subscribing,, I want to install a 5.3 in my 55 chevy truck.. please keep us posted!!
Old 11-15-2009, 11:17 PM
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Thought you guys might like to see some pics of my friends 55 Truck with 1998 LS1. He used an aftermarket harness. Most everything else came from the donor
Attached Thumbnails 58' Chevy Pickup-ls1-truck-005.jpg   58' Chevy Pickup-ls1-truck-004.jpg   58' Chevy Pickup-ls1-truck-001.jpg   58' Chevy Pickup-ls1-truck-002.jpg   58' Chevy Pickup-ls1-truck-003.jpg  

Old 11-16-2009, 03:57 AM
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Thanks for the pics. Im going to be home in about 2 months and really tear into this thing. I have a few questions but I will just break out a list. Everyone feel free to add to the list as you see its needed.


Engine and ECU

ECU- 99 or newer mounted in cab (get at junkyard) PRICE???
Harness- will get aftermarket (found on ebay) $350
Engine- already have minus intake and cam
Intake&cam- LS1 or LS6 whatever I get my hands on and baby cam (215ish duration, 525ish lift.

Tranny


Tranny- all hydraulics can go from goat
Tranny elect- I know it has a couple of things but not sure, need help here.

Rear End

Rear end- from the GTO measures 66" hub-hub. Close to first gen camaro sizes.
suspension- use the irs from the goat, (will have to make lower A-arm mounts and shock mounts up top) I dont think it will be to difficult.
brakes- Already there just make some new lines

Body stuff
Suicide door kit (my hinges are gone and these are cheaper)
Entire bed- leaning towards a 88-98 stepside bed but I need a PICTURE!!!!
wheels- TTII's baby!!!! gonna go 18x10's and 17x9's
Old 11-16-2009, 10:25 AM
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Stu, I've always loved those trucks, now that makes me want to go find one and do a ground up restore with an LS1.
Old 11-16-2009, 04:47 PM
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ECU- 99 or newer mounted in cab
Just to let you know, the cabs of these trucks do not have a lot of room. Charlie mounted his ECU inside the passenger fender. You can just see the wireloom going from the back of the motor over to the passenger side. The ECUs are pretty much weather tight, and those fenders have a lot of room in them. Good place to hide stuff.

Werewolf, if you really want to get trick, extend the cab on one!

Good luck on the project(s)

Pat
Old 11-17-2009, 09:13 AM
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thats where I planned on puttin mine. Im curious as to where to pick one of these up and how much one of them will roughly be.



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