If you are using the correct big block motor mounts, you may have clearance issues with the front crank pulley and crossmember because I believe the trans sits a little higher at the rear and tilts the engine forward and down.
That's what happened to me. My pulley was right on the crossmember.
I had to switch back to using small block motor mounts with my big block/Powerglide.
A side note is that I do not have the BB/4sp crossmember.
How does it differ from the sb/4sp/th350 one?
My original BB/4spd cross menmber looks like yours.what does this go to ? its holes are centered and to the rear compared to the heartbeat city which is foward and to the right .http://cgi.ebay.com/ebaymotors/1967...QQcategoryZ34208QQitemZ230104198206QQtcZphoto
I am going to say a BB/4spd crossmember is needed to mount the Powerglide, because on a small block, which is centered, the PG and 4 speed use the same centered cross member, so logic dictates that on the offset BB, they would need the same offset cross member.Folks,
I have searched this forum seeking the correct answer to the following question:
Which of the 69 big block tranny crossmembers may be used to correctly install a 2 speed powerglide?