Th400 Swap

[TEW1320]

Looking To Install A Th400 In My 87 Gn. Was Wondering How Simple This Is, Driveshaft, Crossmember, Tcc Plug? Any Input Would Be Grateful


Stock Longblock/headers,thdp,3" Single, 50lb Inj, Fmic, Etc.etc.

 

[PaCemkr86]

its not that, hard, gotta get driveshaft cut and th400 yoke put on, dipstick,
diff converter, and a few other things.

 

[Louie L.]

As said above , Its not hard at all with the right parts. Do a search ..Lotsa info covered on this in the past.

 

[tom robison]

make sure you get a short tailshaft and a bop case. your stock driveshaft might work, but may need to be shortend and a 400 yoke installed. you can cut the mount of of your stock crossmember and reweld it where it needs to be or hnrparts and stuff sells a mount that will work with your crossmember. no place to hook up a tcc so just tie it up out of the way.if you still want auto features to work youhave to do something with the kickdown switch, lokar sells something for that.

 

[323GTX]

What about connecting the stock shifter...

Which cable would work best with the TH400?

The cars original 200R4 cable?

Or a TH200 3-speed cable from a console shift 6 cyl Regal?

Other?

 

[PaCemkr86]

the stock one will more than likely work, other than you will only have to put the stock shfiter into 2nd to actully be in 1st gear

 

[turbodave231]

400 swaps aren't that hard. Stock length driveshaft will work. you'll need a 400 yoke and a conversion u-joint. The stock mount will work if you slot one hole in the mount where it bolts to the tailhousing. The stock shifter will work, but you'll want a better shifter. You'll need to rework your cooler lines, and figure out a dipstick to fit.