engine swaps.
August 30th, 2010, 10:34 PM
#1
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Thread Starter
Join Date: Feb 2009
Posts: 12
engine swaps.
New project in the works. Need some advice.
Of the 303/394 series engines, what is the latest / largest that will bolt in to a 50 Olds coupe without frame adapters?? Trying to get by with just swapping stock parts if possible... Lots of nostalgia in this project.
I also want to use the early GM 4spd hydro, so I will sacrifice some engine size if this tranny bolts up, since it will be for cruising, not racing........
Tks for any help..
DAN
Of the 303/394 series engines, what is the latest / largest that will bolt in to a 50 Olds coupe without frame adapters?? Trying to get by with just swapping stock parts if possible... Lots of nostalgia in this project.
I also want to use the early GM 4spd hydro, so I will sacrifice some engine size if this tranny bolts up, since it will be for cruising, not racing........
Tks for any help..
DAN
Last edited by loosecannon39; August 30th, 2010 at 10:37 PM. Reason: incomplete wording
August 30th, 2010, 11:14 PM
#2
Junior Member
Join Date: Oct 2004
Location: Southern CA
Posts: 2,212
303, 324, 371, 371, and 394 engines will bolt in using '49 - '50 mounts.
I do not do trannys but '49 - '56 (not '56 Jetaway) Hydro will bolt up if the bell housing and flywheel for the trans is used. Flywheel must be transfer balanced using the '371 - '394 (externally balanced) unit.
Drive shaft should be the same length, but the yoke will need to be changed to fit a newer trans.
Left exhaust manifold exit flange was too close to the steering box, so I adapted SBC headers.
Norm
I do not do trannys but '49 - '56 (not '56 Jetaway) Hydro will bolt up if the bell housing and flywheel for the trans is used. Flywheel must be transfer balanced using the '371 - '394 (externally balanced) unit.
Drive shaft should be the same length, but the yoke will need to be changed to fit a newer trans.
Left exhaust manifold exit flange was too close to the steering box, so I adapted SBC headers.
Norm
September 2nd, 2010, 02:38 PM
#3
Registered User
Join Date: Nov 2008
Location: Oklahoma City
Posts: 262
Google ' 1956 Oldsmobile '. The 5th selection down, titled '1956 Oldsmobile' is a detailed explanation of a 394 swap into a 56 Olds, using the early trans. I think a lot of the steps will be the same when installing the later motor in the 50 Olds.
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