Harmonic balancer

[BMFB]

Ive had a weird noise ever sense i got this truck, and i finally figured out its the harmonic balancer.

now the only one i can seem to get ahold of is like, 350 bucks, which seems steep...so i was wondering, are the harmonic balancers on these the same as any other 4.3 of that eara? and are they even the same as the ones that are on the 350's and such?

 

[Chedarbob90]

Re: Harmonic balancer

I feel sorry for ya bud. I was trash shitfaced last night and my buddies went out on his durango...we had to limp it home, and now i get to fix it on my day off tomorrow so i know how ya feel.. I work at napa and as far as the computers tellin me its not the same as a regular 4.3 outta the blazers, s10s etc. But this system sucks and i've proved it wrong a handful of times... Dave will know. He's the master.

 

[BMFB]

Re: Harmonic balancer

thats a bad story lol

I went to my buddys junk yard and pulled one off of a stock 4.3 and they seem nearly identical. I do unfortunately notice that the 'spindles' coming off of the center part of the hub seem a bit thicker, and one in particular, the one opposite of the key is much thicker. I also see that there are a number of holes drilled around the outer part of the balancer, and one in the original has a pin in it, and this new one does not. I know that the 4.3 were internally balanced, were the sytys different?

 

[BMFB]

Re: Harmonic balancer

I also have a strange observation...if you can take am ati harmonic balancer and put it on a sy motor, or a regular 4.3, does that mean the stock ones are interchangeable? (from the syty to the other 4.3's) Im prolly gonna end up buying a stock one from a member anyway, but i was just curious, also if you see this im interested in getting a stock replacement harmonic balancer...

 

[midnightbluS10]

Re: Harmonic balancer

Mike Hood at Hood Tuned Performance sells a stock replacement Pioneer SFI unit that's less than half that price, IIRC.

 

[Davemc1963]

Re: Harmonic balancer

Does anyone know a reason for not being able to fit an SBC 350 V8 balancer provided it is the 'same' diameter? If its just the depth/flange thickness for the crank pulley thats different, this can be sorted out with a spacer. (Unless its too thick that is) As already mentioned both are neutral balance. I was going to fit a 'Silcone Fluid' type balancer I got for an 87 Vette. TIA

 

[Poconojoe]

Re: Harmonic balancer

I looked on line and its seems the SBC balancers interchange with the 4.3's as long as they're not for the external balanced 400's Summit had stock ones for around $60 Napa sells a direct replacement for $40, it's a Dorman #594-047, so I'm sure places like Rock Auto would have it even cheaper

 

[Davemc1963]

Re: Harmonic balancer

I've checked out SyTyAuthority and it shows Original GM Part number as 10172764.
The info I've found on this quotes it for 4.3 V6 ONLY - Blazers, Astro's, S10/15's, Sonoma's etc. 6.1/4" diameter and 2.7/8" width. Why only V6? I Dont know without comparing ours to a SBC V8 one. Maybe a search on this Forum will turn something up.

 

[BMFB]

Re: Harmonic balancer

alright, so they are interchangeable, i know that the sbc and the 4.3 are different now that ive done some research. I was just wondering because i need one. If i can get a direct brand new replacement for 40-60 i think ill just do that, maybe after a rebuild ill consider that ATI, thanks man