Turboswede

iTrader: (1)

Hi

Im building up a nissan with lm7 engine and the swapkit is made for using fbody ls1 and gearbox.

Will it be possible to use the t56 Magnum instead of the f-body t56? Does they have the same brackets/mounts etc?

I also wonder what do I need more to use a t56 with lm7? Is they bolt on if I buy ls1 flywheel and clutch?

Project GatTagO

iTrader: (7)

If you get the LS version T56 Magnum then you should just get a f-body bellhousing. You can use any LS1/6 clutch or LS2/7 clutch. Use a F-body slave.

Do a search and you can see the different dimensions that compare a Magnum to an F-body T56. The shifter is in a slightly different location as is the trans mount. None of these differences are insurmountable.

Andrew

TEister

the f body t56 is alot cheaper then the magnums..im assuming they have different ratios though.

dgcustomz

iTrader: (127)

You need to make sure you have adequate tunnel clearance with the magnum tail. I have done a Nissan s14 and just had enough to clear the tunnel with an f-body t56.

TEister

Im currently swapping a 5.3 Lm7 in my s14 as well. and aside from tunnel clearance, do you think the driveshaft length would be different if you ran a f-body vs magnum? my mount kit states its designed for t56 or t56 magnum.

dgcustomz

iTrader: (127)

The trans mount I used was a sikky brand. It was made to bolt up to the factory transmission body location and f-body t56. The Magnum is longer than a f-body t56 and I really don't think it will work. Also the driveshaft length will be different.

dgcustomz

iTrader: (127)

Look at the length from front of bell to mount Via this picture I loaded up.

Looks to be a 1/2" longer where the mount goes.

dgcustomz

iTrader: (127)

The f-body is 31-1/4" vs 33-1/2" for the magnum.

TEister

Yeah the sikky mount kit is what im using. So i need a f-body t56. Are those just as hard to find/just as pricey as a magnum? What did you do to source your fbody trans

dgcustomz

iTrader: (127)

I am always on the classifieds here and also on craigslist looking for good deals. That's your best bet.

2muchboostNY

iTrader: (8)

The Magnum is longer than the Fbody or GTO T56. You will need an extended shifter like the Sikky one and a driveshaft that is shorter than the one for the fbody/GTO. Keep an eye out for classified as noted by DG.

gnx7

iTrader: (28)

you can easily modify the 6 bolt shifter that comes with the Magnum using a 1/2" piece of round steel bar stock and set it back to the desired area. Cut off shifter stick mounting pad on shift selector, drill a hole for 1/2" to be welded in place, figure out desired length, weld it up... then weld on shifter stick mounting pad on rear of bar stock. No need for a $500 Sikky shifter.

The Magnum also requires a different VSS pigtail and a mechanical speedo blockoff plug (if you use the VSS style speedo). It also doesn't have any provision for a torque arm... so the factory one won't bolt up. The trans mount is in the same place.

2muchboostNY

iTrader: (8)

Well if you don't have the fab skills lol.