Crank and water pump pulleys

Discussion in 'Small Block Tech' started by 87GN_70GS, Jun 21, 2003.

  1. 87GN_70GS

    87GN_70GS Well-Known Member

    Does anyone have the diameter of the pullies for the 350 A/C and non-A/C versions for the crank and water pump? Also the depth (front-to-back)? Do you know if they will fit the 455? TIA.
     
  2. 87GN_70GS

    87GN_70GS Well-Known Member

  3. txgwildcat

    txgwildcat Guest

    350 crank pulley has a diameter of about 6 5/8 and depth of about 3 1/2". It will directly replace the larger diameter 455 pulley.
     
  4. 87GN_70GS

    87GN_70GS Well-Known Member

    Is that A/C or non-A/C?
     
  5. txgwildcat

    txgwildcat Guest

    Both dimentions were from A/C, the non AC 350 crank pulley I have looks to have a smaller diamter.
     
  6. txgwildcat

    txgwildcat Guest

    looks to be about 6" dia.
     
  7. 87GN_70GS

    87GN_70GS Well-Known Member

    txg,

    Thanks for the info. Would you have the measurements for the water pump pullies?
     
  8. brblx

    brblx clueless

    so, just out of curiosity, if you put a 455 crank pulley on a 350, would it make for any noticable increase in cooling or alt output?
     
  9. 87GN_70GS

    87GN_70GS Well-Known Member

    If you go from a 350 non-A/C crank pulley to either an A/C or non-A/C 455 pulley, you will speed up the water pump, fan, alternator, etc. The 350 A/C crank pulley is slightly larger so only the 455 A/C pulley is larger.
     
  10. tlivingd

    tlivingd BIG BLOCK, THE ANTI PRIUS

    :Smarty:

    note:
    if you get a pully off of a 69 or older engine it will be of diffrent length. (the water pumps are diffrent lengths) also 70 is a mixed year so some 70 pullys are diffrent than others on the 350's

    just to warn ya.

    Nate
     

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