Topic: Fan Clutch
in Forum: C3 Cooling and Heating Systems
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Lifetime MemberDeBerry, TX - USA
Joined: 2/27/2002
Posts: 1006
Vette(s): 1971 383 Stroker- mille miglia red...5 speed
Tried to get a fan clutch today. MAM, Ecklers and The Last Detail techs all said the '71 was unique and none of them have or can get it. Something about the bolt pattern was different. Ecklers recommended getting a 'universal' type from a local parts house with the slotted type holes. Why would '71 be different from '70 or '72
Would I be likely encounter balance problems with the slotted type? Anyone with a '71 ever run in to this before 
help me, help me! 
Would I be likely encounter balance problems with the slotted type? Anyone with a '71 ever run in to this before help me, help me! I know the voices aren't real, but they have some pretty cool ideas... 
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Bladenboro, NC - USA
Joined: 1/22/2006
Posts: 1058
Vette(s): 1972 conv., sunfire yellow, blk interior, blk vinyl and convertible top. Off frame restoration with American Speed 383 stroker engine producing 500hp plus a 200hp NOS system. MSD ignition. Hooker super competition headers with chambered exhaust.
Rick's has the clutch for the 71. According to them 71 thru 73 is the same.
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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
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There is a difference in the type of clutch only. They will bolt on, as long as the wp shaft size is the same as the clutch. Chances are, you don't have the original water pump on yer car anyway. I would measure the shaft size, and maybe the bolt circle, and see what will fit. Most wp shafts are 5/8" or 3/4" but some are a bit smaller. Maybe they thought you were looking for a "stock/original" fan clutch?
Ron is right, tho. If the pump shaft and the clutch center is the same size, the slotted bolt-hole type will work fine. It's the shaft it centers on anyway, not the bolts.
Ron is right, tho. If the pump shaft and the clutch center is the same size, the slotted bolt-hole type will work fine. It's the shaft it centers on anyway, not the bolts.
Joel Adams
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Lifetime MemberDeBerry, TX - USA
Joined: 2/27/2002
Posts: 1006
Vette(s): 1971 383 Stroker- mille miglia red...5 speed
Thanks for the info guys. 
I know the voices aren't real, but they have some pretty cool ideas...
in Forum: C3 Cooling and Heating Systems
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