harmonic balancer question
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Pro
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From: Cincinnati Ohio
harmonic balancer question
Does a 427/390 have a different balancer than a 427/425 in 1966??? If so, what is different??? Also, are all 11" flywheels the same and what would be correct for a 1966 427/390??? Thanks John Z. You have been a GREAT help!!!
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There were two big-block flywheels. A lightweight 15# flywheel with 12-3/4" diameter, 153-tooth ring gear, and a 10.5" clutch was used on '65 L-78 (396/425), L-88, and ZR-1. All others used a standard weight (32#) flywheel with 14" diameter, 168 teeth, for an 11" clutch; these require the large (621 or 444) bellhousing. 
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Pro
Joined: Aug 2013
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From: Cincinnati Ohio
There were two big-block flywheels. A lightweight 15# flywheel with 12-3/4" diameter, 153-tooth ring gear, and a 10.5" clutch was used on '65 L-78 (396/425), L-88, and ZR-1. All others used a standard weight (32#) flywheel with 14" diameter, 168 teeth, for an 11" clutch; these require the large (621 or 444) bellhousing.
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From: Washington Michigan
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John,
Didn't all the 454 engines use the larger 8in (UNbalanced) balancer, regardless of hyd of solid lifters?
Didn't all the 454 engines use the larger 8in (UNbalanced) balancer, regardless of hyd of solid lifters?
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From: Warwick RI
mr bill_3, changed my clutch assemble on my 64 coupe, made all adjustments as shop manual suggested, have vibration in clutch arm, put anti rattle springs on, but still have a vibration. Also sent fly wheel out for balanceing. changed harmonic ballancer. still problem exist. ahny help is appreciated.
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Joined: Nov 2012
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From: Tampa Florida
mr bill_3, changed my clutch assemble on my 64 coupe, made all adjustments as shop manual suggested, have vibration in clutch arm, put anti rattle springs on, but still have a vibration. Also sent fly wheel out for balanceing. changed harmonic ballancer. still problem exist. ahny help is appreciated.