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Old 03-23-2012, 09:47 PM
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327 chevy harmonic balancer issue

OK. I have a 64-67 Chevy 327 . when I got it , it had a chrome timing cover but no timing tab on it . I got a tab for it but it doesn't line up even though it advertised it that it was for a 283-400. if I put an early 350 balancer on it though (the smaller one but slightly bigger than the one the 327 came with) , it does line up . just wondering why this is happening, is there a chance that the balancer slipped?or is it just that i need a different tab? also wondering if putting a 350 balancer on it would be ok? anyone with ANY good info let me know ! if you have any links to a balancer to use lemme know too !

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Old 03-24-2012, 12:04 AM
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Over the years, GM used the 2 o'clock position timing pointer then later on in the late 70's they went to the 12 o'clock position pointer. If you get the two mixed they don't line up. What I suggest doing is getting a new 8 inch balancer with the 2 o'clock position timing mark, then getting a bolt on timing tab for a 8 inch balancer.
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Old 03-24-2012, 08:28 AM
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Quote:
Originally Posted by i heart square bodys
OK. I have a 64-67 Chevy 327 . when I got it , it had a chrome timing cover but no timing tab on it . I got a tab for it but it doesn't line up even though it advertised it that it was for a 283-400. if I put an early 350 balancer on it though (the smaller one but slightly bigger than the one the 327 came with) , it does line up . just wondering why this is happening, is there a chance that the balancer slipped?or is it just that i need a different tab? also wondering if putting a 350 balancer on it would be ok? anyone with ANY good info let me know ! if you have any links to a balancer to use lemme know too !
HERE is a short page on the different timing tabs/damper TDC lines you're likely to encounter w/the SBC.

As it says, the aftermarket timing tabs (except the adjustable types) are the 2 o'clock or 10 degree from the keyway type tabs. Tabs that are spot welded to the timing cover from the factory can be any of the three.

Main thing is to look carefully at the damper keyway and see which it is, then match the timing tab/timing cover to it. Or make a tab to indicate just TDC, using a timing tape to set the timing with instead of the timing tab.

Last edited by cobalt327; 03-24-2012 at 08:51 AM.
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Old 03-24-2012, 09:31 AM
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I have 2 balancers that are at the 2 oclock position. they are both off 350s but the one i pulled off the 327 is probobly around 3 oclock . i think i am just gping to pick up a balancer off summit thats a similar size with the 2 oclock marking
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Old 03-24-2012, 07:40 PM
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In addition to different diameter balancers and timing tab differences there are two different places balancer may be marked. The timing line either lines up with pulley bolt holes or almost in between them. The change was made late 60's early 70's ?
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Old 03-24-2012, 08:37 PM
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Quote:
Originally Posted by Henry the 32nd
In addition to different diameter balancers and timing tab differences there are two different places balancer may be marked. The timing line either lines up with pulley bolt holes or almost in between them. The change was made late 60's early 70's ?
You are correct- this is explained in some detail on the page linked to above. Actually there were three different lines indicating TDC, to match the three different tab locations. The years overlapped during the changeover between the different types and the different types were used the same years on differently equipped engines.
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Old 03-27-2012, 08:09 AM
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Okay so would it be ok if i used an earlyer 8 inch damper from a 350?
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Old 03-27-2012, 11:40 AM
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Use the Professional Products damper and the problem is solved as it has both marks http://www.professional-products.com/PPDamperNotes.pdf this is the part you need http://www.summitracing.com/parts/PF...n/?prefilter=1
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Old 03-27-2012, 11:43 AM
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Thank you !! that is a huge help lol ill just buy a new one . probs more reliable that way too
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