91 LS3 Swap
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Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
91 LS3 Swap
Random pics of my recent swap. Car was a L98 with LT 6 speed, HSR, SLP exhaust
Now Lt converted to LS6 speed, LS3 with Tick Stage 2 cam, full Hooker Blackheart exhaust and a ton of other engine and car upgrades
Last edited by Realmac4; Jun 18, 2020 at 11:16 AM.
Thread Starter
Member
iTrader: (2)
Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
Thread Starter
Member
iTrader: (2)
Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
Thread Starter
Member
iTrader: (2)
Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
Trending Topics
Joined: Feb 2001
Posts: 13,777
Likes: 567
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: 91 LS3 Swap
Car looks fantastic. Where did you get your CF tubes?, specifically the one with the MAF mount? Any dyno numbers?
Thread Starter
Member
iTrader: (2)
Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
Thread Starter
Member
iTrader: (2)
Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
Re: 91 LS3 Swap


If only it were that easy, lol
IntakeHoses.com for the CF bits, and found a MAF holder I think I used Airraid for that, cut the slot very carefully, taped over the area, drill 2 small holes, then Dremel and cut off wheel to make the slot, then bonded the maf holder to the tube, It's since been rotated out of site, I left it up for tuning purposes
And watch which way the maf goes in, there's an arrow on it for a reason, ask me how I know

And 471w 445t
Last edited by Realmac4; Jun 19, 2020 at 08:53 AM.
Thread Starter
Member
iTrader: (2)
Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
Joined: Sep 1999
Posts: 4,353
Likes: 308
From: NJ
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Joined: Feb 2001
Posts: 13,777
Likes: 567
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Joined: Sep 1999
Posts: 4,353
Likes: 308
From: NJ
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Joined: Feb 2001
Posts: 13,777
Likes: 567
From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Thread Starter
Member
iTrader: (2)
Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
Thread Starter
Member
iTrader: (2)
Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
Joined: Sep 1999
Posts: 4,353
Likes: 308
From: NJ
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Thread Starter
Member
iTrader: (2)
Joined: Jun 2001
Posts: 432
Likes: 17
From: Dover, De U.S.
Car: 1991 Z-28/ '94 Impala SS
Engine: 355 TPI/ 350 LT-1
Transmission: T-56 in both
Axle/Gears: 3.73 / 4.56
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