What is the correct part# for a harmonic balancer for a 1967 327/350 hp?
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Re: harmonic balancer
Gary-----
The part number for the balancer, both original PRODUCTION and current SERVICE, is GM #3817173. However, all PRODUCTION balancers and early SERVICE balancers had reinforcing ribs ("fins")on the rear side of the balancer hub section. SERVICE replacements sold over the course of the past 15+ years, even though available under the original part number, do not have the ribs.In Appreciation of John Hinckley -
Re: Joe - same question / different ap.
What balancer was used for '61 283/230HP ? Is there a service replacement available new from GM? Thank you. -KarlComment
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Re: Joe - same question / different ap.
Karl------
I believe that the original balancer for your application was GM #3760584. This was the "stepped" balancer. It was discontinued over 35 years ago and replaced by GM #3896904 which remains available to this very day. However, while the latter balancer will SERVICE your application perfectly, it is not configured like the original.In Appreciation of John HinckleyComment
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Re: harmonic balancer
Joe - is the same service replacement correct for the '65 and '66 L79s? And would it work on an L75? Thanks.
MarkComment
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Re: harmonic balancer
Mark-----
The GM #3817173 is the correct SERVICE part number for ALL L-79s. This balancer is NOT correct for L-75s. It could be used, but that would also require changing the timing tab and the entire engine pulley system. The L-75 balancer was thinner than the L-79 and, for the most part, a different set of pullies was consequently used with it.In Appreciation of John HinckleyComment
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