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Ly6/t56 in my 79 t/a

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Old 01-08-2013, 03:35 PM
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Default Ly6/t56 in my 79 t/a

Well, a little history. I have been lurking on here for a while as I love to watch builds and keep up with this and that. I have had Supras ever since I was 20, but I was interested in a change of pace and have always wanted to toy with one of these. Its got a tired 400 in it with a 200R4. I love the muscle car look, but I like the modern motor designs and output so I think I have found a pretty happy medium. When the weather gets a little better I will be yanking the 400 and 200r4 and replacing it with an LY6 from a 2007 Silverado 2500 and T-56 from a 99 Z28.
Well, here she is




















There are several things I need to attack on the interior and exterior of the car. Needs wheels pretty badly and some suspension, but drivetrain first!

Here is the LY6, this is before any clean up. Ill get better pictures as we get closer.
Yesterday I went and picked up the motor





I will probably put a 236/231 cam in it to wake it up a bit. Texas Speed has a pretty nice kit out there. Remove the VVT and freshen up with seals and things.

F body oil pan came in as well.


Grabbed the T-56 with some fixins over the weekend along with an LS7 clutch and driveshaft.





Several more pieces are on order or on my to do list. BRP makes some nice conversion packages and PSI has some nice wiring so anyway Ill update this as I make more progress.
Old 01-08-2013, 03:39 PM
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Ready to see this thing come to life! As of now its a zombie lol
Old 01-08-2013, 04:21 PM
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Nice. Everytime I see another 2nd gen F body it makes me want to get started on my conversion. I just have too many previous projects going on now. Most of you know that pain
Old 01-08-2013, 11:08 PM
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What ECU are you planing on using? If the motor came with the e38 ecu dont use it, the e38 from the truck never came with a stick so it will never work perfetly with one.
Old 01-09-2013, 06:09 PM
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Looks like a solid car to work with and it's a hard top, I like it.
Old 01-09-2013, 06:20 PM
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Yeah that is a really sweet looking bird.
Old 01-10-2013, 05:45 PM
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Originally Posted by Photochop
Ready to see this thing come to life! As of now its a zombie lol
Haha, for real. This thing is just barely living. 80HP in all its glory!!

Originally Posted by hoboy
Nice. Everytime I see another 2nd gen F body it makes me want to get started on my conversion. I just have too many previous projects going on now. Most of you know that pain
lol cant wait to see it man!

Originally Posted by hicksport
What ECU are you planing on using? If the motor came with the e38 ecu dont use it, the e38 from the truck never came with a stick so it will never work perfetly with one.
I actually am buying one from PSI Conversion. Along with a Lingenfelter conversion box.

Originally Posted by 2nd Gen Fl 'bird
Looks like a solid car to work with and it's a hard top, I like it.
Thanks sir. Hardtop was the only way to go for me. I've had a t top and it leaked like crazy.

Originally Posted by Rick Speed
Yeah that is a really sweet looking bird.
Thank you!!
Old 01-10-2013, 06:46 PM
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Nice car. I saw one at a Goodguys show that had an LS3 w/t56 combo. If I recall it was a super duty TA.
Old 01-10-2013, 06:54 PM
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Originally Posted by 99MUSTANG5.3L
Nice car. I saw one at a Goodguys show that had an LS3 w/t56 combo. If I recall it was a super duty TA.
I appreciate it!

O very nice. Love the SD!
Old 01-10-2013, 07:08 PM
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sub'd, nice bird!
Old 01-11-2013, 10:08 AM
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Originally Posted by cprmn14
sub'd, nice bird!
Thank you sir.
Old 01-15-2013, 01:27 PM
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Subscribed! I'll be doing basically the exact same swap with my '79 Firebird after I'm done with my dad's '70 GTO swap. Post as many pictures and info possible!
Old 01-15-2013, 02:54 PM
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Originally Posted by krwyellowZ28
Subscribed! I'll be doing basically the exact same swap with my '79 Firebird after I'm done with my dad's '70 GTO swap. Post as many pictures and info possible!
Will do it. I will put a list of the pieces that I ordered and such as well. I am just at the gathering and researching stage right now, but when the weather gets decent I will get out there.
Old 01-16-2013, 09:49 PM
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Love the T/A, she is in great shape! Your going to love an LS/T56 in that car. Definately subscribed to this build.
Old 01-16-2013, 11:26 PM
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this will be a blast. One thing you might want to try is the LS7/Corvette front drive. That way, it clears everything (hood, frame, control arms, tie rods, etc.) without a single item needing to be cut or modified. Nice looking car, btw. I wish mine was all one color :-)
Old 01-17-2013, 08:43 AM
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Originally Posted by tsnow678
Love the T/A, she is in great shape! Your going to love an LS/T56 in that car. Definately subscribed to this build.
Thanks for the kind words and also for all the help/advice. I am very excited about this build. I will def try to document it like you did! Spring cannot come soon enough!

Originally Posted by 1981TA
this will be a blast. One thing you might want to try is the LS7/Corvette front drive. That way, it clears everything (hood, frame, control arms, tie rods, etc.) without a single item needing to be cut or modified. Nice looking car, btw. I wish mine was all one color :-)
Thank you. I will look into that. Thank you for the suggestion. Dont worry, paint is only skin deep
Old 01-17-2013, 02:34 PM
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Another thing worth thinking about is going with a Wilwood or similar clutch master cylinder, instead of doing a forth gen conversion. That's what I did with mine: T56 connected to Wilwood Master in 2nd Gen TA

I really didn't like the angle at which the conversion plate put the master cylinder rod, in relation to the clutch pedal - it was close to 45 degrees off. The RAM clutch master I had leaked almost immediately (cheap piece of crap), I think mostly due to the side load on the rod. If you go the "normal" route, use a Tick master. Do not cheap out on this.
Old 01-18-2013, 11:11 AM
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Originally Posted by 1981TA
Another thing worth thinking about is going with a Wilwood or similar clutch master cylinder, instead of doing a forth gen conversion. That's what I did with mine: T56 connected to Wilwood Master in 2nd Gen TA

I really didn't like the angle at which the conversion plate put the master cylinder rod, in relation to the clutch pedal - it was close to 45 degrees off. The RAM clutch master I had leaked almost immediately (cheap piece of crap), I think mostly due to the side load on the rod. If you go the "normal" route, use a Tick master. Do not cheap out on this.
Ahhhh, I was just thinking about this!!! When I purchased the T56 it didnt come with a 4th gen setup so I have been looking at options. Looked at Wilwood a bit as well as Mcloud. What did this setup run you?

Last edited by REDL1NE; 01-18-2013 at 11:16 AM.
Old 01-19-2013, 02:30 PM
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The clutch master was cheap, around 75 bucks, and VERY well made. The brake master was a little over $200. Adjustable prop valve was $60. The clutch line mod cost me $20. The car has Wilwood Dynalite 12" brakes on the front (kit from Jegs/Amazon/Summit is between $600 and $700), rear brakes are currently stock 1981 WS6 rear disc, but I'm prepping another rear axle that will have stock 1998-2002 LS1 F-body brakes and Ford axles (no c-clips).

I *just* found the GM part number for the Corvette LS7 accessory drive without AC: 19257325. It's at Pace for $509

Last edited by 1981TA; 01-20-2013 at 12:29 AM.
Old 01-21-2013, 09:40 AM
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Originally Posted by 1981TA
The clutch master was cheap, around 75 bucks, and VERY well made. The brake master was a little over $200. Adjustable prop valve was $60. The clutch line mod cost me $20. The car has Wilwood Dynalite 12" brakes on the front (kit from Jegs/Amazon/Summit is between $600 and $700), rear brakes are currently stock 1981 WS6 rear disc, but I'm prepping another rear axle that will have stock 1998-2002 LS1 F-body brakes and Ford axles (no c-clips).

I *just* found the GM part number for the Corvette LS7 accessory drive without AC: 19257325. It's at Pace for $509
Sweet! Thanks for the info! I have been thinking about this and looking at some different ones. I looked at this Tick adjustable master cylinder before and it is still in the running.


Overall, I didn't do much on the car this weekend. The weekend was nice so I did do a few things. The 400 has some ring issues and I wanted to investigate further to see if I could help it any before pulling it out and apart. It is pretty much how I thought it was and not much could be done without just tearing it apart. I also wrote down some stamping numbers from the block and heads to try to find out exactly what they are.
I had it up on the ramps and kinda went over it all and made a list of things I need. I was looking at lowering the rear a bit. I really need to replace the bushing around the leaf springs. They are cracked and might even be the originals..lol

Next weekend I will go ahead and complete the door panels(I haven't installed the hockey sticks yet). I don't want to pull this motor/trans combo until I have the other setup ready to go! I hate down time.

Still gathering parts, but I am wondering about the throttle body. I am looking at the Edelbrock 90mm. What do you guys think?

Last edited by REDL1NE; 01-21-2013 at 10:43 AM.


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