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Old 11-29-2020, 11:36 AM
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Default Magnum F

Wondering if anyone has swapped from a T56 to the new T56 Magnum F? My big question is fit and shifter lineup comparison.

Thanks
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Old 11-29-2020, 02:54 PM
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Wondering if anyone has swapped from a T56 to the new T56 Magnum F? My big question is fit and shifter lineup comparison.

Thanks
I have a magnum.. how can I help
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Old 11-29-2020, 04:06 PM
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I have a magnum.. how can I help
Is it a Magnum or the new Magnum F-Body? Looking for some feed back on the swap between a T-56 and the new T-56 Magnum F-Body.

http://https://tremec-blog.com/intro...-gen-f-bodies/
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Old 11-29-2020, 04:41 PM
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Is it a Magnum or the new Magnum F-Body? Looking for some feed back on the swap between a T-56 and the new T-56 Magnum F-Body.

http://https://tremec-blog.com/intro...-gen-f-bodies/
OH.. its a regular Magnum.. sorry.
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Old 11-29-2020, 05:57 PM
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Curtis, I think that F body one is a bolt in replacement for the 98-02 4th gen cars. Give those guys a close ratio version compared to the GM one. I donít see a reason you couldnít swap one if you already had a 4th gen one in your car. Honestly, I would just get a close ratio magnum(regular) and call it a day.
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Old 11-30-2020, 11:42 AM
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Curtis, I think that F body one is a bolt in replacement for the 98-02 4th gen cars. Give those guys a close ratio version compared to the GM one. I donít see a reason you couldnít swap one if you already had a 4th gen one in your car. Honestly, I would just get a close ratio magnum(regular) and call it a day.
I didn't raise the trans tunnel in my 67 and the current T56 fits, but it's crazy tight. No way a regular Magnum is going to fit in there. From what I've read, the Magnum-F should fit, but.... we've heard that before. Was hoping to find someone that's done the T56 to T56 Magnum-F swap and get some feedback.

I blew the seal out of the tail shaft housing on my current T56 Stage II setup. Apparently a common issue and weak spot. Not sure how much fluid was lost or how much internal damage was done. Oddly one of the AC compressor fittings broke at the same time and the fluid leaked out. Pulled over upon seeing the smoke and found the broken line. Assumed the smoke was the oil burning off the exhaust. Mopped up what I could and headed for home. Hit the freeway and about 60 MPH experienced a very aggressive vibration. Slowed down, took the next exit and pulled over. Found the rear of the car covered in transmission fluid. Limped the last two miles home super slow. No noise, or smoke at the low speed. Cleaned the car up (top to bottom) and found the issue. Not really surprised. Not thrilled, but I drive the car aggressively.... cause that's what it's for. No big. Just glad it didn't happen on the drive home from GoodGuys Scottsdale last weekend.

Appreciate the feedback!





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Old 11-30-2020, 02:07 PM
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Atta boy! Keep finding the weak links.
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Old 11-30-2020, 11:11 PM
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Great post! I'm curious about the same question.

Hoping the Magnum-F fits same in the tunnel as a regular f-body T56. I'm using the Holley/Hooker engine/trans mounts in my Nova.
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Old 12-01-2020, 10:46 AM
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I've installed a bunch of the F style units as they have been out for about a year now. The only real thing you need to change from your standard T56 is the 31 spline yoke. Otherwise it is a bolt in and your other wiring connectors are plug/play.

I'm pushing over 1200rwhp thru a 100% stock T56 Magnum F style in my LS9 turbo RX-7 without issues (this car isn't in my sig). Runs high 8'[email protected] and is a full on street car (3.31 gears in an 8.8" out back). I don't launch it hard as breaking stuff isn't my happy place. The shifting smoothness is no comparison to your older T56 and the .80 5th is great as you stay in your powerband better.... I shift at 7800rpm when doing 1/2 mile racing
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  #10  
Old 12-01-2020, 06:12 PM
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Quote:
Originally Posted by gnx7 View Post
I've installed a bunch of the F style units as they have been out for about a year now. The only real thing you need to change from your standard T56 is the 31 spline yoke. Otherwise it is a bolt in and your other wiring connectors are plug/play.

I'm pushing over 1200rwhp thru a 100% stock T56 Magnum F style in my LS9 turbo RX-7 without issues (this car isn't in my sig). Runs high 8'[email protected] and is a full on street car (3.31 gears in an 8.8" out back). I don't launch it hard as breaking stuff isn't my happy place. The shifting smoothness is no comparison to your older T56 and the .80 5th is great as you stay in your powerband better.... I shift at 7800rpm when doing 1/2 mile racing
That's a pretty good sales pitch. This goes inline with everyone else I've talked to that has any knowledge on the "F". I ordered one, along with the 31 spline yoke this morning.

Thanks for information vote that this is the right way to go.

Once the install process starts, I'll post whatever pictures I get.
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