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Old 08-05-2012, 11:14 PM   #1
hitman11_ac
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1977 LS1 Corvette (another C3 swap)

I got this car in 1999 when I was 18 right before leaving for college. I drove it once with the original motor in it. Then I parked it, started tearing it apart, ran out of money, never finished putting her back together and left for Austin. She sat in my parents garage for 8 years.



Fast forward to 2009, along the way got married, had some kids, finished school, got a job, and decided to get her running again. I swapped the original 350 due to messed up this and that, plugged in a rebuilt 350 and drove it 3 times. The guy that installed it could never get it to run right.

I parked her again (this time in my grandmother's garage) and started tearing her apart from the bottom up (not frame off though).

Over a 3 year span:
Upgraded suspension
Repaired brake system
Repaired power steering
Repaired and pieced together new interior (yet to be installed)

and started the LSX journey...

I decided on 5.7L (LS1) from 99 Trans-am, keeping TH400 tranny (4L60e planned for a future swap)

Harness from PSI Conversion
Computer from local guy with tune
True dual exhaust (for now) custom local welding shop
Gauges from Vettaid
Lokar throttle cable
Lokar oil dip stick
Corvette regulator/filter
Walbro 255 lph external pump
F-body brackets and accessories all around
F-body oil pan (cleared no problems)
Hybrid A/C system (kwik performance compressor bracket, sanden 508 compressor, LS1 camaro condensor, C3 accumulator and evaporator, custom a/c lines)
Custom power steering line (combined C3 and LS1 hose)
TurnOne power steering pulley
Removed heater outlets on water pump to clear a-arm
Hughes Performance flexwheel/flywheel adapter to make engine mate with tranny TH400
1 inch setback mounting plates (ebay)
A bunch of other stuff I'm sure I'm forgetting
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Old 08-05-2012, 11:29 PM   #2
hitman11_ac
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shot of the exhaust, suspension, and new gauges

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Old 08-06-2012, 09:09 AM   #3
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Very nice work! Great looking car. I had a '77 back when it was nearly new. An LS1 is a fitting upgrade for such a great car. Not sure if you have done the paint and cosmetic stuff yet, but give us more pics if you have.
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Old 08-06-2012, 09:54 AM   #4
MIKE80
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Nice build! Really like the LSx upgrades.
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Old 08-06-2012, 12:11 PM   #5
hitman11_ac
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pic of the 4l60e rebuilt tranny...to be installed soon
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Old 08-06-2012, 08:28 PM   #6
riggs 74
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Nice to see another LS C3. Looking foward to the updates.

Riggs
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Old 08-06-2012, 09:54 PM   #7
brent319
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Nice to see another build going on!
I hope you keep the LS longer then the other engines :-)
I am sure you will.
Keep us updated on your progress.
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Old 09-10-2012, 06:41 PM   #8
hitman11_ac
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update

new hybrid harness from psi and vettaid
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Old 09-10-2012, 06:44 PM   #9
hitman11_ac
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new fuel pump and filter/regulator location...hose routing will be cleaned up later
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Old 09-10-2012, 06:47 PM   #10
hitman11_ac
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oil pressure sending unit location behind intake near MAP sensor
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Old 09-10-2012, 06:57 PM   #11
hitman11_ac
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4l60e ready to replace the th400
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Old 09-10-2012, 06:59 PM   #12
hitman11_ac
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my helper under the car with me
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Old 01-27-2013, 11:19 AM   #13
hitman11_ac
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Finally she growls! Got her started on 01.22.13

But now the dang engine needs a rebuild...argh! Burning oil bad.
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Old 01-27-2013, 11:27 AM   #14
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Originally Posted by hitman11_ac View Post
Finally she growls! Got her started on 01.22.13

But now the dang engine needs a rebuild...argh! Burning oil bad.
Man that really sucks!
Although now you have an excuse to go LS6 on heads and cam etc... Glad you started the thread, more details on the install and electronics please!
Bill
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Old 01-27-2013, 03:19 PM   #15
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Nice, the LS swap is such a no brainer now anyone who is serious about their car should do it. It just makes it a much better car.
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