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 :captain:

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/

OH.. its a regular Magnum.. sorry.

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 don’t see a reason you couldn’t 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! :captain:

https://photos.smugmug.com/photos/i-...-4q9JSNp-L.jpg

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Atta boy! Keep finding the weak links.

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.

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's@173mph 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 :D

That's a pretty good sales pitch. :lol: 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.

Wait at Curtis.. if you have a t56 magnum already you already have 31 spline..
Asking because I am just about to order my driveshaft.. and according to research.. 31 spline comes on t56 magnum.

https://tremec-blog.com/the-differen...agnum-6-speed/

Ummmm... Yes & No. This is a confusing conversation to have and I've learned a lot the past few days. Thankfully some great people where willing to edumakate me.

So there is the T56, T56 Magnum and the T56 Magnum-F (I think there is also a T56 Magnum XL).

I currently have a 93-02 4th gen T56 that was rebuilt with a Stage 2 Kit. It has a 27 spline slip yoke. The T56 Magnum and T56 Magnum-F require a 31 spline slip yoke.... so you are correct in that part.

The T56 Magnum-F is a new version of the T56 Magnum (which is basically a TR6060.. for the most part) that is designed to be a direct replacement for the 93-02 4th gen T56.

The T56 Magnum and the T56 Magnum-F differ in that the "F" has three ways to mount the shifter and the tail housing is different. I'm sure there are more, but that was my takeaway.

Basically the "F" doesn't require any tunnel mods for me and will be a direct bolt in. (fingers crossed)

Clear as mud...right! :lol:

OK cool.. 31 spline.. is what I ordered..

I just did the same swap ("Regular" T-56 out... Magnum F-Body in).
In my case, I also went from the LT pull-style clutch (with external slave cylinder) to a twin disc DYAD and hydraulic TO bearing. The clutch swap required a deeper bell housing which pushed the trans back about 1.5". This also moved my trans mount and shifter location back the same 1.5". But the trans locations for the mount and shifter were the same between the old T-56 and the Magnum F.
My tunnel was modified and has plenty of room for either, but FWIW the clearances seem similar on both tranny's.
I also needed a new driveshaft, both because of the beefier output shaft of the Magnum, and that pesky 1.5" deeper bell housing. I had been running a steel driveshaft on the T-56, now went to an aluminum shaft.
If you're not changing bell housings, the swap should be a straight bolt-in.

Prices on pretty much all Tremec products will increase $100 after next week for the 2021 sales year. If you are on the fence to get a T56 Magnum..... get on it!

I’ve done the swap in my Chevelle, and it’s a direct bolt in, minus the driveshaft yoke needing changed because of spline count...which was included with the trans purchase. Exact same size as t-56, and shifters interchange. Shifts so much better than the t-56. Bought it through gnx7 (Mark) last Christmas. Can’t believe it’s been a year already!

Can confirm the Magnum-F is a direct swap in a 69 Camaro with regard to the physical size/location of the transmission when compared to a T56 out of a 98-02 F-Body.

This should be the only Tremec Magnum transmission (Magnum-F) anybody with a first generation Camaro should be considering when swapping to a T56 nowadays.

I agree 100%

I just did the f-body standard T-56 6-speed to a Magnum-F in a 69 Camaro the tunnel wasn't modified and the standard T-56 fit fine but now the new Magnum-F is hitting the top of the tunnel. Seems the two other shifter positions are hitting the top of the tunnel. The shifter was a little bit further back. Also the trans cross member had to be moved back and now is hitting the passenger side exhaust.

The stock shifter that comes with the transmission is leaking too.

When purchasing a new unit from Bowler or Jody's , why the Magnum-F over just the Magnum?

Does the Magnum F use a different speed sensor than the regular Magnum? The regular Magnum uses a Ford sensor, wondering if the "F" uses a GM one that matches the pulse output count as a regular GM T56.
Thanks

EDIT: That would require a different target wheel on the output shaft too wouldn't it?

The Magnum F style is supposed to be a duplicate offering for the '99-02 style T56. The main difference is the 31 spline yoke needed. I like this transmission better as the 4 bolt shifter offerings are much better than the standard Magnum T56 6 bolt style shifter. The F style comes with a pretty nice billet shifter... but most opt to install an MGW shifter etc instead.

My trans guy is selling me on a Red Roberts shifter
https://redrobertsinc.com/