Drive shaft question

[pontiac dragger24]

I am building a 87 grand prix and i pulled out a chevy 350 with a 2004r transmission and i will be putting in a th350 i just picked up a used drive shaft that came out of a g body race car and there is about a 1 to 2 inch difference in length should they be the same or which drive shaft should i use?

 

[pagrunt]

My big Chevy parts list the same driveshaft for all 3 speeds & TH200 4R.

 

[pontiac dragger24]

My big Chevy parts list the same driveshaft for all 3 speeds & TH200 4R.

so why would the used one that i bought be different lengths the used one came out of a g body with a th350 which is what i will have but they are shorter

 

[TURNA]

If the TH350 is a short tail you need the longer driveshaft

 

[pontiac dragger24]

If the TH350 is a short tail you need the longer driveshaft

so i should just need the stock one out of the car?

 

[pagrunt]

What lenth is the TH350 tail housing? If I remember & seen on different post there are 3 different tail housing lenths for 2wd units.

 

[pontiac dragger24]

What lenth is the TH350 tail housing? If I remember & seen on different post there are 3 different tail housing lenths for 2wd units.

i believe it is just the 6" tail

 

[TURNA]

Also the trans-mount location is roughly 6 inches farther rearward on the 2004r than for a TH350 using the same-style trans mount.

So your x-member location is not correct

 

[pontiac dragger24]

Also the trans-mount location is roughly 6 inches farther rearward on the 2004r than for a TH350 using the same-style trans mount.

So your x-member location is not correct

how do i bolt up the new transmission to fit the x member

 

[TURNA]

The chassis mount locations and the x-members are different on the drivers side on cars that came with 2004r's than the cars that came with the TH350.