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#1
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Swapping a 403 for a 455
I own a 79 Trans Am that originally had a 403. I purchased the 455 and th400 transmission for a 74 Trans Am. I'm wanting to know what all I would need to change out in order to drop the new engine and transmission in?
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#2
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sent you a list by PM
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#3
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Why not put the list up for everyone?
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#4
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Motor mounts frame side and block mount brackets (f-body Pontiac)
Fuel line has to go to driver side Shaker and air cleaner base(PONTIAC 400) A/c lines Fan shroud -pontiac Engine harness - Pontiac, Battery cables Brackets and pulleys for Pontiac This is a good start to get you headed in the right direction. If you need the block motor mount brackets, I have them. thepontiacman@yahoo.com Sent from my Moto Z3 Play using Tapatalk
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The Following User Says Thank You to thepontiacman For This Useful Post: | ||
#5
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Quote:
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#6
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Not sure if the '74 Turbo 400 trans will fit. My 1978 T/A w/ Pontiac 400 engine has a Turbo 350 Trans which is shorther in length, has a different trans mount location and uses a different spline on the front U-Joint than a Turbo 400.
Maybe the experts can comment here. |
#7
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TH400 will fit in the TA.
shorter driveshaft, TH400 yoke, and crossmember, electric kickdown switch/accelerator pedal assembly. TH400 is longer than TH350. Yoke is bigger.
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#8
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It would prob be faster just putting. A 79 nose on a 74 ta.
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