200 to 400 swap

[dank GN]

just wanted to share some pics of my swap

 

[dank GN]

 

[TexasT]

Did you get her up n runnin?
If so, how different does it feel/drive w/o od and a lockup converter?

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[Ktbregal]

Make sure your line pressure isn't to high.

 

[pacecarta]

not sure what you were trying to show in the tape measure pic but the driveshaft for a th400 needs to be about 3/4 to 1" shorter than the 2004r, and because of yoke differences driveshafts get measured from center of ujoints , so for the th400 that needs a shaft about 50.5" measured center of ujoints on a 8.5 rear . depending on rear used and pinion and trans yokes that can vary so its best to measure and order the shaft after the trans is in and you know what yokes you plan to run

for the trans mount you can slot the openings in the 2004r mount to get it to bolt to the th400 tailshaft or get the hr poly setup

youll also want to swap out the shifter and cable for something for a three speed . the 2004r column lockout assembly will work so you keep neutral start and reverse lamp but youll need to add the2004r bracket loops to th400 shifter bracket, from pic yours has the loops on the th400 shft bracket
if the trans has a brake (rmvb) the track will want you to run a trans blanket or sheild, even if they dont bust your balls you should run one anyway

trans cooler lines can be bent to fit (or run -6an) but be aware the inlet and outlets are reversed on the th400 compared to the 2004r

 

[Chuck Leeper]

Also, make sure the cooler circuit has the correct restrictor.
Your thrust brg will thank you!

 

[dank GN]

Thanks guys what is the piñon bolt size? 1"1/4? I have to get a socket . I will have a gauge on the coolent line what is a good pressure that will not take my trust bearing out ?

 

[TexasT]

I thought it 1 1/8" but I'd put a. Caliper on it to be sure.

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[SS/GN]

Also, make sure the cooler circuit has the correct restrictor.
Your thrust brg will thank you!

Chuck,can you explain this please. I have never heard of this.
Thanks in advance

 

[dank GN]

To much pressure will cause the converter to be pushing on the flex plate and in turn whipe your trust out on the crank

 

[dank GN]

It's 1"1/4

 

[dank GN]

So my drive shaft had to be cut . It's in and runing just need to get a speedometer assy. Does anyone know the proper tooth count for 3.42 gears with 28" tires?

 

[turbobitt]

So my drive shaft had to be cut . It's in and runing just need to get a speedometer assy. Does anyone know the proper tooth count for 3.42 gears with 28" tires?

You need to no what the drive gear tooth count is. May need to pull the tailhousing off and count teeth.
AG.

 

[pacecarta]

theres a calculator on the TCI site and they sell some of the gears
http://www.tciauto.com/tc/speedometer-gear-calculator/