Finally finished LS1 T56 swap into OBS

[88stepside]

I worked on this project off and on for a couple of years. I picked up a wrecked 2004 GTO and used everything possible from the donor car. Upgrades included an LS7 clutch and Shoenfeld headers. Exhaust even used the GTO mufflers and tips. I sold the GTO oil pan and used an fbody pan, tray, pickup tube, and dipstick. CAI was homemade from mostly parts I already had. Shifter doesn't hit the seat but its close, its a pro5.0 shifter with hurst stick. I also swapped the front springs to improve the ride and lower it back down.
Wiring was a challenge, but after the learning curve its not too bad. I added the aux back up lights and front bumper fog lights into the reused GTO fuse box. Also moved the original power center from the truck firewall to the GTO fusebox.

[kerrige]

Wow very nicely done looks like a clean swap. How much did this end up costing?

[bangbangskeetskeet]

I would love to have a t-56, but its just way too much money and with a full console it makes it hard to have a good shifter.

[pacobeagle]

Congrats, really like the look of the truck. Now, post a timeslip or two. What does this truck have for a rear-end? Curious.


Hope to get mine done soon as well. Mine isn't as complex though, just a 4.8l.

[DBRODS]

Nice truck!!!!

[CHEVROLADE]

clean truck...

[88stepside]

Thanks for all the positive responses.

Wow very nicely done looks like a clean swap. How much did this end up costing?

Because I worked on it myself with alot of help from friends, sold off old motor, sold off some GTO parts, it was hard to keep track of costs.

Congrats, really like the look of the truck. Now, post a timeslip or two. What does this truck have for a rear-end? Curious.
The rear is out of a 1990 454SS with an Eaton posi and the stock gears 3.73. I have a set of 4.56 gears that need to be installed.


Hope to get mine done soon as well. Mine isn't as complex though, just a 4.8l.

Rear is out of 1990 454SS truck with an Eaton posi and stock 3.73 gears. I have 4.56 waiting to go in though, right now 6th gear is useless.

[88stepside]

Couple more pics

[bangbangskeetskeet]

Love the look of the shifter in the truck.

[Old Nash]

Super install job and good looking truck.