| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
02-25-2026, 09:13 AM
|
|||
|
|||
57 3 speed trans swap
Hello, I am thinking about swapping out a 57 3 speed standard trans, with a later 3 or 4 speed are the bolt patterns the same for both? I only have knowledge of late 60s Bell housing. Thanks
|
|
#2
02-26-2026, 12:51 AM
|
||||
|
||||
|
No, you need a 58-60 bellhousing. 58 & 59 have provisions for rear engine mounts, although the mount details are somewhat unlike the 57 mounts,
Truth is, I once did modify a '57 housing to the later trans pattern. But it was a nasty job and an ugly result!
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) ... or has a Pontiac born the same year as Jim Wangers? (1926} 
|
|
#3
02-26-2026, 08:05 PM
|
|||
|
|||
|
That's what I was thinking. Thanks for checking in.
__________________
"At no time did we exceed 175 mph.” Dan Gurney's truthful response to his and Brock Yate's winning of the first ever Cannonball Baker Sea-to-Shining Sea... Still have my 1st Firebird 7th Firebird 57 Starchief |
|
#4
03-07-2026, 05:19 PM
|
||||
|
||||
|
As Jack said, you need a 58-60 bell housing. You also need a 56 (Strato-Flight Hydramatic only) or 57 Hydramatic cross member for attaching motor mounts. The motor mounts can be quite easily adapted from the bell housing to that cross member.
|
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
