LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Update: 01/22/16 "My crappy turbo build"

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Old 01-23-2015, 03:03 PM
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Default Update: 01/17/17 "My crappy turbo build" + Dyno Vid

I guess I mine as well post pics of my build. Not the best of pics and documentation but ask questions if your curious about anything. Last phone got pretty much destroyed with all the in depth pics I will update the build when things changes. So bare with me

This is a 97 Trans Am WS6. It all started out as a head cam swap to make it a little fun street car. After doing some research and discussing some things with the guys here, I found that it was not ideal to do a head cam swap on a LT1 that has 130k miles on it. At that point I said screw it and rebuilt the motor myself. It feels good to have buit something with your own hands.

This is the pig. Picked up in KC for $3K





Started removing minor things to get the show on the road






Out with the T56





Removed the entire engine from bottom. Very easy and simple. Especially with a lift












Now the actual fun part. Disassembling the stock motor.












Parts started to roll in an phone got destroyed a little after this point









Slowly started putting things back together







Had this TC7875 turbo. Was going to run it but started second guessing myself. More concerned with back pressure issues









So I was spec'd out this turbo. And I was informed that it was a good idea to make the change





Here is the results of the missing pics along with my new BMR K member




The story behind this next pic. The whole reason I went turbo was I found a deal on CRAIGSLIST (yea I know). So this guy was selling this kit that was LT1 specific. Which was kinda odd to me because not too much LT1 stuff is still around, especially turbo stuff. The kit included 2 garret turbos hotside, cold side, intercooler, boost controller etc. Basically everything I needed to make the turbo kit function properly. But me being a dumbass and being excited I jumped on the deal. It caused me more harm than help. I spent $1K and regret it everyday. So once I got the motor built and ready for mock up, nothing fit. Everything was crap. The only thing out of the entire kit I kept was the intercooler. I had to basically start over and figure out how I was gonna make this setup work. To make matters worse, he lied about specs and brands and pretty much everything. Wouldnt answer my calls or questions so I was stuck. I learned my lesson from jumping into forced induction without a lot of knowledge and understanding of a lot of things.





At this point I said screw it and installed the motor and took it to my friend who is a great fabricator to get my hot/coldside built. Best money I'd ever spent










Added MWC bumper support, stood radiator up for turbo clearance, 98-02 front clip conversion to allow air flow for intercooler and added fender exhaust exit.



















I will continue to update until D day. Wish me luck. And thanks for all the advice some of you guys have given me

Last edited by SwampWS6; 01-17-2017 at 10:56 AM. Reason: Update build thread
Old 01-23-2015, 07:21 PM
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Nice build. That thing should make some good steam with e85 and that s480.

Keep the pics and updates coming
Old 01-23-2015, 07:24 PM
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Dumping the turbo under the car?
Old 01-23-2015, 09:33 PM
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Originally Posted by BIGsmokey10
Nice build. That thing should make some good steam with e85 and that s480.

Keep the pics and updates coming
Thanks man! I hope to make some decent hp. I have learned a BIG lesson while building this car. Is to NEVER EVER EVER buy parts before you need them.
Old 01-23-2015, 09:35 PM
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Originally Posted by Shownomercy
Dumping the turbo under the car?
Yea. I wanted to get a little more fancy with it but right now I just want the thing to work right
Old 01-23-2015, 09:41 PM
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I would cut out the license plate area for maximum airflow to the intercooler.

Also, looks very nice in there, great fabrication.
Old 01-23-2015, 10:34 PM
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Originally Posted by 94FBIRD
I would cut out the license plate area for maximum airflow to the intercooler.

Also, looks very nice in there, great fabrication.
Thanks. Yea thats the plan to remove the license plate cover
Old 01-24-2015, 08:17 AM
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First off its sweet you stayed with the LT1 ! Your buddy did some nice fab work ! Does he want to build another hot side ? Lol ...
Old 01-24-2015, 08:35 AM
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Nice build.. I can't wait to here it start..
Old 01-24-2015, 06:10 PM
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A real WS6 would still get about $7-$8,000 in Denver with those miles in that condition. $3,000 is a hell of a buy.
Old 01-24-2015, 09:48 PM
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build looks nice, got bummed out by the 98+ conversion.. car looked sick before, uncommon to see a nice 93-97 TA.
Old 01-24-2015, 09:54 PM
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Originally Posted by ozfromboz
First off its sweet you stayed with the LT1 ! Your buddy did some nice fab work ! Does he want to build another hot side ? Lol ...
More than likely he would. Just would have to have car in house to do so
Old 01-24-2015, 10:00 PM
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Originally Posted by jay7199
build looks nice, got bummed out by the 98+ conversion.. car looked sick before, uncommon to see a nice 93-97 TA.
Yea, I sat on the idea for a while, and then thought about how much airflow the cooler would actually get, it was a no brainer. By still being LT1 I need as much flow and power I could get in order to keep up with these LS guys. I wanted to keep that LT1 look, but there where no aftermarket bumpers available without it looking all ricered out. I thought of the Formula bumper, but I couldnt mix that and a WS6 together....
Old 01-25-2015, 11:30 PM
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yeah I do understand what you mean about the airflow, looking forward to seeing more updates!
Old 01-26-2015, 06:51 AM
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One thing I noticed is how the turbo is right in front of the Opti, make sure you wrap the turbo, that heat might kill it. Mine was actually like that, then I had the turbo move away from front of the Opti..
Old 01-26-2015, 08:35 AM
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Originally Posted by moehorsepower
One thing I noticed is how the turbo is right in front of the Opti, make sure you wrap the turbo, that heat might kill it. Mine was actually like that, then I had the turbo move away from front of the Opti..
That was a concern of mine. But with a high quality blanket it should be ok I think. Especially if the blanket is cool to the touch. A 24X conversion would work out much better.
Old 01-27-2015, 10:12 AM
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Looking good. Are you planning on going 24x or sticking with the opti for now?
Old 01-27-2015, 10:23 AM
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Originally Posted by Blackbirdws6
Looking good. Are you planning on going 24x or sticking with the opti for now?
My 1st kid is due in June. So trying to finish this up and save money, Im gonna have to wait on the 24x. Thats a minimum of $1500 and I have this new S60 on the way, so there is noway I could afford the conversion now. But I do get jealous everytime a 24x swap. Are you running a 1 bar or 2 bar MAP?
Old 01-27-2015, 08:58 PM
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Sounds like a fun setup. Keep us posted.
Old 02-04-2015, 07:45 AM
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Update: Got started on wrapping the hotside with my heat wrap this past weekend. I was very excited to get my care package from PTP Turbo Blankets (http://ptpturboblankets.com/). Ran outta material for my downpipe, so I am currently waiting on that to arrive








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