Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 

Thread: TH350 to 305 CSB
          
   
   

Reply To Thread
Results 1 to 5 of 5
  1. #1
    jhal is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2006
    Location
    Soper
    Posts
    9

    TH350 to 305 CSB

     



    No tranny swap experience - will the TH350 mate up, without adapters, to the Chevy 305 (this one is an '88)? I am pulling a TH200 out - will the 200's flywheel/torque converter move over to the 350? Lastly, will any vacuum port on the carb work for the vacuum modulator? Thanks, Hal

  2. #2
    nitrowarrior's Avatar
    nitrowarrior is offline CHR Member Visit my Photo Gallery
    Join Date
    Mar 2007
    Location
    Mesa
    Posts
    1,386

    No adaptor plates required. Just make sure the flexplate is correct. One piece rear main and two piece rear main seal engines are different from each other which also requires starter nose offset to match. In other words make sure the vintage of the motors are close to the same. Pre 84 will all be an easy exchange. Example; 83 engine being pulled out and a 96 engine being put in will require the flexplate and starter change to accept the set up. I know I'm creating a bit of confusion, just keep the years within the same generation. Manifold vacuum for the modulator and do not share the pcv port for this use. Properly mate a correct torque converter to the 350. If it's a used unit, drain overnight and put in new fluid.
    Last edited by nitrowarrior; 05-17-2007 at 03:37 PM.
    What if the "Hokey Pokey" is what it's really all about?

  3. #3
    jhal is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2006
    Location
    Soper
    Posts
    9

    I guess today isn't my brightest day. The 1988 305 CSB will mate up to the TH350 if the tranny is of the same generation - correct? Any idea what range of years I have to work with as for as picking up the 350 tranny? Thanks, Hal

  4. #4
    nitrowarrior's Avatar
    nitrowarrior is offline CHR Member Visit my Photo Gallery
    Join Date
    Mar 2007
    Location
    Mesa
    Posts
    1,386

    for ease of installment, keep it pre 84 .....As of late 84 into 85 they started getting ready for the 86 one piece rear main seal attitude. Arguments abound about the time table, but it doesn't matter. Stay pre 84 for good measure. Tranny is not the main issue, work with the motor selection first and keep the right torque convertor in the 350THM for your satisfying install.
    Last edited by nitrowarrior; 05-17-2007 at 03:38 PM.
    What if the "Hokey Pokey" is what it's really all about?

  5. #5
    jhal is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2006
    Location
    Soper
    Posts
    9

    Nitrowarrior, thanks for the help and clarification. Hal

Reply To Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink