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LB9/TH700 to L98/T5 swap rebuild and swap complete!

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Old 02-24-2020 | 10:02 AM
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From: Los Angeles
Car: 1989 IROC Convertible
Engine: 350 TPI L98
Transmission: WC T5
Axle/Gears: 3.42
LB9/TH700 to L98/T5 swap rebuild and swap complete!

Thanks so much to everyone who helped on this board. It's been a journey. This weekend, I declared this project "substantially complete" with some tuning and loose ends to tie up. I wasn't sure where to post so I posted here.

Just a few pics.

















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Kevin91Z (03-03-2020)
Old 02-24-2020 | 10:09 AM
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From: Los Angeles
Car: 1989 IROC Convertible
Engine: 350 TPI L98
Transmission: WC T5
Axle/Gears: 3.42
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!








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CKone (02-24-2020)
Old 02-24-2020 | 10:11 AM
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From: Los Angeles
Car: 1989 IROC Convertible
Engine: 350 TPI L98
Transmission: WC T5
Axle/Gears: 3.42
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

Time-Lapse Engine/Trans drop in...
Attached Files
File Type: mov
Slo-Mo Install.mov (4.05 MB, 33 views)
Old 02-24-2020 | 10:19 AM
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Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

It's a beautiful thing when it's all shiny and new isn't it.
Congratulations.
Old 02-24-2020 | 10:42 AM
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From: East Moline, IL
Car: 88 T/A, 91 Formula, 94 Firehawk
Engine: 400 Pontiac, 5.0 TPI, 5.7 LT1
Transmission: 700R4, T5, T56
Axle/Gears: 4.10, 3.42, 3.42
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

Definitely a sweet moment when you can turn the key and hit the road! 👍🏻
Old 02-24-2020 | 11:06 AM
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From: Los Angeles
Car: 1989 IROC Convertible
Engine: 350 TPI L98
Transmission: WC T5
Axle/Gears: 3.42
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

Thanks. A big, unexpected surprise was the unique smell of first run. That first burn-off of whatever oils and greases and cleaners and paint and whatnot on all the new and refinished parts. The last time I had smelled those smells I was 15. It's amazing how things like that can put a person's sense of reality back in time so significantly.
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WildCard600 (02-24-2020)
Old 02-24-2020 | 12:59 PM
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From: SW Missouri
Car: 1989 Trans Am
Engine: sp357
Transmission: T-5
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

[cleetus mcfarland] Hell yeah, brother ! [/cleetus mcfarland]
Old 03-03-2020 | 09:10 AM
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Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

Awesome job! Love the shifter.
Old 03-03-2020 | 10:25 AM
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Car: 1989 IROC-Z 305 LB9 AT Convertible
Engine: LB9 305
Transmission: AT
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

The swap I'd do, to my red, '89 LB9/AT IROC Z Vert (except the manual trans), if I did not live in cali!

Are you running subframe connectors? I can't wait to hear how it drives! Good job!
Old 03-03-2020 | 11:39 AM
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From: Los Angeles
Car: 1989 IROC Convertible
Engine: 350 TPI L98
Transmission: WC T5
Axle/Gears: 3.42
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

Originally Posted by mikeceli
The swap I'd do, to my red, '89 LB9/AT IROC Z Vert (except the manual trans), if I did not live in cali!

Are you running subframe connectors? I can't wait to hear how it drives! Good job!
Thanks, yes, the Spohn side rail weld in ones. Those and the STB made a huge difference.
Old 03-03-2020 | 11:59 AM
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Car: 1989 IROC-Z 305 LB9 AT Convertible
Engine: LB9 305
Transmission: AT
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

Originally Posted by Tootie Pang
Thanks, yes, the Spohn side rail weld in ones. Those and the STB made a huge difference.

Did they make the car feel more solid, on road bumps/potholes? reduce squeaks / rattles?
Old 03-03-2020 | 03:22 PM
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From: Los Angeles
Car: 1989 IROC Convertible
Engine: 350 TPI L98
Transmission: WC T5
Axle/Gears: 3.42
Re: LB9/TH700 to L98/T5 swap rebuild and swap complete!

Yes. All of the above.
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