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Old 07-04-2024, 08:57 AM   #1
TTSaleen
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Join Date: Jul 2014
Location: NC
Posts: 282
Lightbulb 6R80 conversion in my 2003 Mach1

Update for the Mach1.

Took the T56 Magnum, RXT clutch, and driveshaft out and sold them to a local Terminator owner.

I have a bunch of leftover parts from a few years ago when I put a 6R80 in this car.
I decided to go back to the 6R80 and this time maybe it will be a better result.

I got a stock 04 shifter and bezel (the color doesn't match so I will paint it).

I had a Stiffler's crossmember, flexplate, and engine plate already.
I liked the Lokar shifter I had years ago, but those things are CRAZY expensive these days. So I found this stock shifter off Ebay for under $125, making it the easy choice.

I have found/purchased a 2014 6R80 with stock converter out of a Navigator. This was under $600.

I have purchased the Power by Hour transmission fittings, shifter lever, and stop bracket (prevents pulling shifter to 1).


I spent yesterday fitting the shifter as it is NOT a direct fit into a manual car.
But with a saw and drill, I got it done and it fits great (must install from bottom by the way).


Will hope to post updates soon once I receive my other parts.
Main reason to switch - I wanted to go faster and consistently at the race track.

I really liked this swap years ago, but never raced it because the Circle D converter was dragging the car down at idle and making it cut off (it was a 5 clutch deal out of my TTSaleen).

Follow along as I list my adventure to redo this swap.

Old parts removed -





Stock 04 shifter install -



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Current -
1998 Saleen Black - Twin Turbo 5.4 - 1,100+ rwhp - 8.50 @ 167mph
2003 Mach 1 - Azure Blue 800rwhp on E85 - 10.18 @ 140mph
Instagram - ttsaleen
YouTube - 98saleen

Former -
2003 Mach 1 - Torch Red - Auto - Eaton Swap = 472rwhp
Link to build thread - http://www.mach1registry.org/forums/...d.php?t=132733
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