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Author Topic: z28 harmonic balancer?  (Read 2612 times)
jonboy1216
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« on: February 19, 2010, 07:36:31 PM »

does a 68 MO 3817173 have the cooling fins on the back of the balancer? i have seen NOS ones both ways just dont which one is right
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1968 Z28
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« Reply #1 on: February 19, 2010, 09:19:50 PM »

My original '68 balancer does not have the fins....Looks like the finned ones were on the earlier Corvettes.
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Jerry G.

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« Reply #2 on: February 19, 2010, 10:58:19 PM »

My original '68 balancer does not have the fins....Looks like the finned ones were on the earlier Corvettes.

Mine either.
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68Z28
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« Reply #3 on: February 20, 2010, 01:31:25 AM »

My '68 Z/28 harmonic balancer is "fin-less" too.

Paul
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jonboy1216
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« Reply #4 on: February 21, 2010, 12:38:10 AM »

thanks guys for the info
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GaryL
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« Reply #5 on: March 04, 2010, 10:47:11 PM »

What would the fins be cooling?
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Gary

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« Reply #6 on: March 05, 2010, 10:50:52 AM »

What would the fins be cooling?

Most likely someone thought it would reduce the temperature of the hub, thereby improving the durability of the elastomer material between the hub O.D. and the inertia ring I.D.; warranty and test data probably didn't support the theory, and the fins were removed. Most optional '62-'67 Corvette engines used the 8" balancer with the fins.
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Jerry@CHP
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« Reply #7 on: March 05, 2010, 08:37:21 PM »

Have never seen any original 302 with finned balancer.

Jerry
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MyRed67
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« Reply #8 on: March 09, 2010, 10:34:44 PM »

What Balancer did the'67 - 302 use?  Was it the same as the 350?
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1967 Camaro  LOS  11A
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« Reply #9 on: March 09, 2010, 11:58:19 PM »

350 8" balancer is thinner.

Jerry
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SSMUNDY
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« Reply #10 on: March 13, 2010, 11:28:53 PM »

Can anyone tell me what the thickness is of the '67  8" balancer? I need to know the distance between the face of the balancer where the pulley bolts on, and the back side of the hub where it meets the crank?
Thanks,
Sean
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