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10-31-2016, 08:12 PM
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#1 |
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Active Member
 Join Date: Feb 2009
Location: Cle Elum, Washington
Posts: 164
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327 Harmonic balancer
Rebuilding a 327 and noticed there is no bolt or threads in the crankshaft that holds the balancer in place. I check a 350 on an engine stand nearby and it has a 1 1/2 fine threaded bolt and a 1/4 inch washer on the crankshaft holding the balancer and pulleys in place. Is this supposed to be?
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cascadeheavychevy 67 C10 327 4speed 69 C20 350 4WD 4speed 69 C20 350 4WD 4speed 69 C20 350 4 soeed 69 C20 CST 350 Auto 70 C10 307 4speed 71 GMC Supr 350 Auto 70 C10 350 Auto 67 CST 327 Auto |
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11-01-2016, 09:07 AM
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#2 |
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Registered User
Join Date: Jul 2015
Location: North East PA
Posts: 682
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Re: 327 Harmonic balancer
Yes your 327 Harmonic balancer was pressed on, nothing unusual about it
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11-01-2016, 11:18 AM
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#3 |
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Active Member
Join Date: Feb 2009
Location: Cle Elum, Washington
Posts: 164
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Re: 327 Harmonic balancer
Thanks jrainman I have not worked on a 327 before and thought the missing bolt was odd. Very simple explanation.
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cascadeheavychevy 67 C10 327 4speed 69 C20 350 4WD 4speed 69 C20 350 4WD 4speed 69 C20 350 4 soeed 69 C20 CST 350 Auto 70 C10 307 4speed 71 GMC Supr 350 Auto 70 C10 350 Auto 67 CST 327 Auto |
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11-01-2016, 02:28 PM
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#4 |
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Registered User
Join Date: Aug 2016
Location: Lake Forest, CA
Posts: 2,177
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Re: 327 Harmonic balancer
Ive been driving my 64 impala SS for 10 years now with a press on one for the rebuild with no issues.
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"Work hard, use your vacation days." 1970 C15 GMC Long Bed 1986 C20 Scottsdale 1983 K2500 Sierra Classic Suburban 6.2 Instagram: C10sofOC |
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11-01-2016, 02:29 PM
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#5 |
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Registered User
Join Date: Jun 2008
Location: Moss Point,Ms.
Posts: 1,439
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Re: 327 Harmonic balancer
If I remember correctly,the high performance engines got the bolt.
In 67,I believe all small blocks got it. My original 68,C-10 with 327 has the bolt in it. Mike. 
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11-01-2016, 07:41 PM
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#6 |
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Active Member
Join Date: Feb 2009
Location: Cle Elum, Washington
Posts: 164
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Re: 327 Harmonic balancer
Hmmm! The 327 engine I am working on is a 69 with a 68 date code. Then I check a 69 with a 307 and it has no bolt. All the 350 4 bolt blocks I checked have a bolt. Interesting.
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cascadeheavychevy 67 C10 327 4speed 69 C20 350 4WD 4speed 69 C20 350 4WD 4speed 69 C20 350 4 soeed 69 C20 CST 350 Auto 70 C10 307 4speed 71 GMC Supr 350 Auto 70 C10 350 Auto 67 CST 327 Auto |
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11-01-2016, 09:38 PM
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#7 |
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Senior Member
Join Date: Aug 2004
Location: Centennial, CO
Posts: 2,964
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Re: 327 Harmonic balancer
As I recall, most of the small journal motors had press on balancers. They usually had short water pumps too. I think 67-68 were the cross over years where you could get either style.
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ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ |
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11-02-2016, 09:56 AM
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#8 | |
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Registered User
Join Date: Jul 2015
Location: North East PA
Posts: 682
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Re: 327 Harmonic balancer
Quote:
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