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Thread: Blown LSX c5 corvette droid

  1. #1
    Constant Bitrate AutoWiz's Avatar
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    Blown LSX c5 corvette droid

    Starting my new build thread as the work is getting under way. my new car is a 2000 corvette. it has all the bells and whistles. targa top, heads up display, c6 zo6 rims, and it is automatic transmission. the first thing I have to do to my new car is change the engine. it is how I got such a good deal on such a beautiful car. so i got a lsx376-b8. it is a crate engine from Chevrolet. before i get the power adder the motor is worth 450hp and 433tq. the motor comes as a long block and because it is a newer generation ls engine nothing is compatible and i have to buy manifold, fuel rail, injectors, oil pan, throttle body, starter, etc.

    there are a few tricks to making this engine work with an earlier controller. the new lsx block must be drilled and tapped to accept the older style knock sensors, and either the motor needs to be tore down and crank and cam reluctors changed, or there is a converter module that takes the 58x input and sends out the 24x signal my vette's pcm is looking for. also the vast majority of the calibrations in the cars pcm are now incorrect. so the pcm needs to be written with a correct tune file for the lsx engine.
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  2. #2
    Constant Bitrate AutoWiz's Avatar
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    so the lsx376 is based off the ls3. an engine for cars this side of 2008. my car is a 2000. when dealing with a build like this it is important that all sensors are matched to the controller, and not to the engine. the older generation knock sensors that my car uses require a larger threaded hole than what was on the lsx376. so I had to drill the knock sensor holes to 8.5mm and then tap to m10x1.5. the first picture in my first post shows the original knock sensors that came with the lsx. and here is the knock sensors taken out of the valley on my old ls1 and screwed into the sides of the lsx block.

    another trick to this swap is that a throttle body off a ls2 must be used. also a rh motor mount bracket off a 2009 corvette must be used. And I personally can't stand the batwing oil pan my corvette has so what you see in the pic is a 2005+ c6 corvette oil pan. I am stuffing this beast of an engine in my vette tomorrow.
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    Last edited by AutoWiz; 02-27-2015 at 10:43 PM.

  3. #3
    Maximum Bitrate rray's Avatar
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    How is the project going? Decide on what boost to go with?

    Sent from my A0001 using Tapatalk

  4. #4
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    Can't wait for your result...
    Good job.

  5. #5
    Constant Bitrate AutoWiz's Avatar
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    here is the last pics of the original ls1 inside the car. also here are some good pics of my job and my tools.
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  6. #6
    Constant Bitrate AutoWiz's Avatar
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    here is the teardown. the old engine coming out from the top. you can see the underdrive crank pulley that was making the car run warm at idle and making the alternator full field itself at idle. the new engine has no need for such desperate measures. and i owe a debt of gratitude to my co worker chris. a job like this is always a lot easier with an extra hand.
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  7. #7
    Constant Bitrate AutoWiz's Avatar
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    Exhaust modifications i believe are self-explanatory...
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  8. #8
    Constant Bitrate AutoWiz's Avatar
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    here are a coule of motor swap selfies. i just had to have a pic with my new engine before it went in. and here is the lsx376 sitting in my c5 vette.
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  9. #9
    Constant Bitrate AutoWiz's Avatar
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    just look at that non batwing c6 oil pan. look at all that room. also look at this drivetrain. because you wont see it anywhere else. only corvettes and only since the c5 corvette, the motor trans and diff are all one solid mass when bolted together with the torque tube. so when you step on the gas, nothing flexes apart or tries to twist the body like everything else. also the corvettes put the engine up front and the transmission in the back with the diff to help with weight distribution.
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  10. #10
    Constant Bitrate AutoWiz's Avatar
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    one cool thing about doing a conversion as involved as this and being meticulous about it is you get to find and correct stuff like this. these two twisted pair of wires are for the front wheel speed sensors. they run along the left side of the engine block and under the motor mount. I am quite sure it was the long tube headers that cause these wires to burn. as bad as it looks, there was only an intermittent abs/tcs problem.
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