LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

87' Formula LT1 swap driving!

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Old Sep 15, 2014 | 09:05 PM
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5-0 Blackbird's Avatar
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Joined: Mar 2007
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From: Phelps, NY
Car: 87 Firebird Formula, 97' GMC Sierra
Engine: LT1, 4.3 Vortec
Transmission: T-56, 4L60E
Axle/Gears: 4.10 Posi, 3.42 Posi
87' Formula LT1 swap driving!

Hey guys, been quite a while since I've posted anything, but finally got the car driving. Well, I actually got it going really late last year, but only got to drive it for about a month before parking it for the winter. Had a few issues with it towards the beginning of this year, but I think the drivetrain is dialed in. Now to redo the interior and get it painted next year! haha. Just figured I'd post some recent vids of it on here for anyone interested.


Start up, Rev, and idle-

Accel-

Newest idle vid-
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