68 I6 to sbc auto, few questions

[dmartin1]

so ive done spome reading getting the most for the swap.and i think i know my answers but need to clarify.

i have a 68 frame,factory inline 6 and manual trans.both gone.peches and member still there.

i have a sbc 350 and th400 from a 3/4 ton 69 gmc.(factory v8 auto)

my questions are-

are the v8 perches from a 3/4 and 1/2 the same?do i need to buy them for a 1/2 ton? and are they different between 68 and say 69 or 70?

factory driveshaft is still there. will the yoke slide into the th400, or do i need to use the yoke currently in the th400?

as for the transmission crossmember, i have a factory crossmember for a th350 automatic out of a 69.can i use this with the th400 on the 68 frame?

i know with the v8 perches it moves up a hole from the straight 6 engine.i could just jump right into it and notice what i need as i go but man if anyone knows these and could help itd be sweet! i know the answers are somewhere on the board, just beating my head in with 5+ questions.thanks guys

[LockDoc]

Originally Posted by dmartin1

so ive done spome reading getting the most for the swap.and i think i know my answers but need to clarify.

i have a 68 frame,factory inline 6 and manual trans.both gone.peches and member still there.

i have a sbc 350 and th400 from a 3/4 ton 69 gmc.(factory v8 auto)

my questions are-

are the v8 perches from a 3/4 and 1/2 the same?do i need to buy them for a 1/2 ton? and are they different between 68 and say 69 or 70?

factory driveshaft is still there. will the yoke slide into the th400, or do i need to use the yoke currently in the th400?

as for the transmission crossmember, i have a factory crossmember for a th350 automatic out of a 69.can i use this with the th400 on the 68 frame?

i know with the v8 perches it moves up a hole from the straight 6 engine.i could just jump right into it and notice what i need as i go but man if anyone knows these and could help itd be sweet! i know the answers are somewhere on the board, just beating my head in with 5+ questions.thanks guys

The small block V-8 perches are all the same.

You need to use the TH400 yoke. It is larger in diameter.

I think you can use the TH350 Xmember. I posted some pictures of the two in this thread....

http://67-72chevytrucks.com/vboard/s...d.php?t=241552

You will have to remove the manual trans Xmember.

LockDoc

[dmartin1]

Originally Posted by LockDoc

The small block V-8 perches are all the same.

You need to use the TH400 yoke. It is larger in diameter.

I think you can use the TH350 Xmember. I posted some pictures of the two in this thread....

http://67-72chevytrucks.com/vboard/s...d.php?t=241552

You will have to remove the manual trans Xmember.

LockDoc

nice dude. you the man thanks a ton!

[Avitech]

When you remove the manual trans crossmember, drop me a line. I need one.