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I need a 3 groove crank pulley for a '70 302 with air. I think they are the same for 71 and maybe 72.
Thanks,
Matt
 

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A C7 pulley (at least anything stamped C7 on the pulley)
will have an indexing lip and be 3 bolt. I believe that all
'70-up 302's are the 4 bolt crank pulley and no lip, just a
hole that lines up with a raised area on the harmonic balancer.
 

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pulley

I need a 3 groove crank pulley for a '70 302 with air. I think they are the same for 71 and maybe 72.
Thanks,
Matt
This is the pulley you need It will clean up and paint up to look new Ray
DOAE-C =
1970 302 351W 351 C W/AC
1971 302 351C W/AC
1972 302 351C W/AC
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I have one also off of a 1969 351W w/ac also have the correct spacer with bolts.

Bob
 

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guys any pulley pre 69 is a 3 bolt pulley meaning it uses three bolts to hold it to the balancer and even then 69 pulleys differ from pre 69 pulleys in how it indexes to the balancer. 70 and up pulleys use 4 bolts to the balancer and do not interchange with 69 and earlier pulleys because of this.
 

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No kidding.
See post #3.......
 
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