454 front pulley
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3rd Gear
Joined: Jun 2011
Posts: 3
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454 front pulley
have installed a 454 bbc in my 1970. engine is not a covette engine but is a passinger car high performance block. front pulley is resting on crossmember with 1/2" left to go to drop down on motor mounts. pulley is a threegroove with rear groove not used. middle for p/s. outside for alt.. pulley is approx. 7 7/8" by 3" deep. what is the best solution-- is a smaller pulley avl. or do i need to cut a groove in cross member?? gary
Safety Car
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
you need BB 3-groove "Corvette pulley" if you use A/C.
that will fit within the crossmember.
Please don't cut the crossmember !
that will fit within the crossmember.
Please don't cut the crossmember !
Last edited by 69Vett; Jul 5, 2011 at 09:56 PM.
Melting Slicks
Joined: May 2002
Posts: 2,717
Likes: 121
From: Sulphur LA
St. Jude Donor '05-'06,'11,'13-'14,'16,'18,'19,'24, '25
You will need all vette specific pulleys or cut the cross member,
Sounds like your motor is equipped with a long water pump and pulleys
All C3 vettes came with short water pumps and pulleys to match.
All that being said I cut my cross member and built a larger notch for clearance of a deep crank pulley. Not a big deal to do if you have minor fab skills.
Neal
Sounds like your motor is equipped with a long water pump and pulleys
All C3 vettes came with short water pumps and pulleys to match.
All that being said I cut my cross member and built a larger notch for clearance of a deep crank pulley. Not a big deal to do if you have minor fab skills.
Neal
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
no part number, not sure there is one...but with HIGH heat on the cross member you can make a substancial dimple it to fit without losing any strength and look like nothing happened.......no cuts ect.
Instructor
Joined: Sep 2007
Posts: 198
Likes: 0
From: Colorado Springs Colorado
If this isn't the one you need, these people probably have the one's you need:
http://www.zip-corvette.com/ProductD...GR-SR&CTitle=&
Looks like Zips web site is down right now, when it's back up search, 454 pulley
http://www.zip-corvette.com/ProductD...GR-SR&CTitle=&
Looks like Zips web site is down right now, when it's back up search, 454 pulley
Last edited by tonyv123; Jul 6, 2011 at 07:43 PM. Reason: Bad link
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Melting Slicks
Joined: Apr 2007
Posts: 3,189
Likes: 111
From: Tolland CT
According to the Assembly Manual, the part number for the crank pulley, LS5 454 is 3921923.
Water pump pulley #3889372.
The manual states these pulleys were used with RPO C60 as well, 454 with AC.
Water pump pulley #3889372.
The manual states these pulleys were used with RPO C60 as well, 454 with AC.
