Results 1 to 5 of 5

Thread: 350 or 400 Crank?

  1. #1
    Junior Member SHOW GUEST
    Join Date
    Mar 2008
    Location
    Independence, Mo
    Posts
    3

    350 or 400 Crank?

    Hello, I am new to this forum and this is my first post. My question is concerning an engine in a car I just bought. Is there any way to tell if the engine has a 350 or 400 crank by looking at it externally? I know it a freshly rebuilt engine as advertised, but there is conflicting info on whether it is a stroker or not. It is an 010 350 block, said to be a 383 by the guy I got it from but another fellow said to know the engine build says he's not sure if it has a 400 crank or not.
    I would really like to know on way or the other without tearing it down if possible.
    Thanks in advance, Pete

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    Feb 2006
    Location
    Lenoir City Tennessee
    Posts
    865
    if its not balanced you can look at the balancer if its a 400 it will have a groove cut in the back part of the balancer about halfway around it

  3. #3
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
    Location
    La.
    Posts
    2,890
    If it's 383 it has to be an after market crank, becauce the main jurnals are different size on a 350 blk and a 400 blk.(2.450/350---2.650/400 mains.)
    But it's still hard to tell because some after market cranks are internally balanced. If it's an after market crank with ext. balance it will have as before mentioned a counter weight in the balancer and a counter weight on the fly wheel like a 400 blk/motor.

    Zip.

  4. #4
    Senior Member RACING JUNKIE fla1976's Avatar
    Join Date
    Aug 2007
    Posts
    1,530

    383

    I think the only way to know for sure is to pull the pan. Then you could figure out a way to measure the stroke. It shouldn't be too hard with a quarter inch difference. The block would probably have to be ground for clearancing also.

  5. #5
    Junior Member SHOW GUEST
    Join Date
    Feb 2006
    Location
    Rochester, MN
    Posts
    9
    If it is a stock 400 crank ground down to fit in a 350 block and if it is externally balanced it would have a weighted balancer and the stock crank would have a pin for locating the external balance flexplate on the rear flange of the crank. If it is an aftermarket crank and internally balanced you could possibly contact a local dirt track tech guy, alot of them have access to a cid pump and you could verify closely your cubic inch that way with out disassembly.


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy