Results 1 to 5 of 5

Thread: 303 or 324 swap into a 48 98. anyone done it?

  1. #1

    303 or 324 swap into a 48 98. anyone done it?

    1948 98 sedanette. straight 8 is gutless, so i have a 1954 324 i'm rebuilding to install. being that the 1949 was basically the same, other than the V8, it should fit, other than maybe the mounts need to be modified. the hydramatic on the straight 8 probably won't work on the 54 engine and i do have the 54 hydro, so any suggestions are appreciated. john walker 2067896800 seattle
    Last edited by john walker; October 13th, 2012 at 15:24.

  2. #2
    Senior Member
    Join Date
    Oct 2010
    Location
    North Dallas Texas
    Posts
    537

    Re: 303 or 324 swap into a 48 98. anyone done it?

    There is a tech booklet that was issued with the introduction of the 49 Olds that out limes the major changes to 48 frame and 49 frame. It may help you. Also the parts book may be of help in the long run. Cheaper to put in a different ring gear to acheive some getty up and go. Also look for after market carbs to make it go faster.

  3. #3

    Re: 303 or 324 swap into a 48 98. anyone done it?

    Hey John it's Doug from Long Island NY. I purchased the 1948 Olds 98 that I told you about last year. Oddly enough I would like to do the same engine swap as you. I have a 1949 303 with a cool tri power set-up. Please let me know how the swap goes, I think it will be straightforward. Good Luck! 631 988-1139

  4. #4
    Senior Member
    Join Date
    Jan 2010
    Location
    vulcania
    Posts
    2,176

    Re: 303 or 324 swap into a 48 98. anyone done it?

    Quote Originally Posted by rsd9699 View Post
    There is a tech booklet that was issued with the introduction of the 49 Olds that out limes the major changes to 48 frame and 49 frame. It may help you. Also the parts book may be of help in the long run. Cheaper to put in a different ring gear to acheive some getty up and go. Also look for after market carbs to make it go faster.
    Just how low of a ring and pinion would you want to go for performance? Stock Olds third members are the same from 1939-1952. In automatic's the ratio is 3.64 which is plenty low with Hydramatic's 3.82 1st gear!! At WOT that gear is over at 15mph maximum. If you used the stick shift third member at 4.30, first gear would be over at 8mph.
    I would find someone who would like a 48 98 and buy a 49 or later. 1948 Olds 98's are hard enough to come by stock, why bucher one up?

  5. #5
    Senior Member
    Join Date
    Apr 2005
    Location
    Dayton Ohio
    Posts
    1,079
    Images
    4

    Re: 303 or 324 swap into a 48 98. anyone done it?

    I think it should almost bolt in except for the front mount,you might need the 54 rear mount crossmember but it should be a easy swap. Years ago I had a wrecked 53 Olds and a 47 Pontiac and the frames looked identical and was seriously thinking about putting the 303 and hydro in the Pontiac until I traded the motor for motorcycle.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. top swap from l 67
    By the chad in forum Buick Reatta
    Replies: 6
    Last Post: May 31st, 2010, 20:41
  2. Cam Swap
    By DrOldsJr in forum Oldsmobile - Technical
    Replies: 1
    Last Post: September 12th, 2004, 23:16
  3. 455 swap
    By in forum Buick - General
    Replies: 1
    Last Post: April 9th, 2002, 00:52
  4. 455 swap?
    By in forum Buick - General
    Replies: 4
    Last Post: November 29th, 2000, 11:46

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •