Harmonic Balancer + Crank Identification Big Block
 

i have a Harmonic Balancer part #3963532 and a Crank part #7416 with other numbers M010 R020 GMT2 4-74 S-363 P4426.
any help in identification will be much appreciated.

Re: Harmonic Balancer + Crank Identification Big Block
 

7416 is a 454 steel crank. With the numbers you gave the casting date appears to be 1974.

Double check the number on the harmonic balancer. I think you have too many numbers. https://www.yenko.net/ubbthreads/imag...lins/dunno.gif

Kurt

Re: Harmonic Balancer + Crank Identification Big Block
 

[ QUOTE ]
7416 is a 454 steel crank. With the numbers you gave the casting date appears to be 1974.

Double check the number on the harmonic balancer. I think you have too many numbers. https://www.yenko.net/ubbthreads/imag...lins/dunno.gif

Kurt

[/ QUOTE ]

your right,just double checked the last #7 should not be there for the balancer. thank you about the crank.

Re: Harmonic Balancer + Crank Identification Big Block
 

3963532 is a 8" balancer for a 454.

Re: Harmonic Balancer + Crank Identification Big Block
 

would both parts work for a LS6 motor?

Re: Harmonic Balancer + Crank Identification Big Block
 

Yes, I believe so.

You need to get more information on that from someone with more knowledge than me.

I'm sure someone else will chime in.

Kurt https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: Harmonic Balancer + Crank Identification Big B
 

The M010 and R020 are most likely machine notes...10 thou on the mains and 20 thou on the rod journals.

Re: Harmonic Balancer + Crank Identification Big Block
 

Both your crank & dampner were exclusive to the 1970-71 LS-6 only.
Those parts were available for years later on for service,as your date denotes.

Re: Harmonic Balancer + Crank Identification Big Block
 

thank you guys,i appreciate the great help here https://www.yenko.net/ubbthreads/imag...iggthumpup.gif