sbc harmonic balancer

Bobby Zlatkin · 03-02-2013, 06:14 AM

I have a late model one piece rear seal block and the correct flexplate (externally balanced).

Can I use a small diameter (6 3/8") mid-sixties, low-perf 327,neutral balanced balancer here?

Using an early 80's timing cover, TDC is 10 degrees advanced from the mark on the timing tab, but I'll allow for that. I'm thinking the late model one piece rear seal crank is keyed different.

Allowing for that, is there any reason this hybrid (my term, no one elses. I could use the term bastard, but that's not nice) won't work?

I hate to keep running out and buying stuff when I have it in the shop. Just for a different year.

Call me cheap, or call me frugal. Your call.

Thanks in advance. Adger, I know you could help me.

randy wilson · 03-02-2013, 08:08 AM

I don't know a lot, but I know you can't run a 327 balancer, on an externally balanced engine of any kind.

Tom keedle · 03-02-2013, 10:30 AM

yep, it'll work but the timing mark's will be way off UNLESS you use the 327 (or 283) timing cover...or just mak you're own pointer..the 1 piece rear main engines were balanced at the flywheel, not the balancer

400's were a different critter

randy wilson · 03-02-2013, 10:59 AM

OK, didn't know that. Never too old to learn something new.

Ed Wright · 03-02-2013, 11:00 AM

Do your engine a favor and put an ATI dampener on it.

Bob Bender · 03-02-2013, 01:59 PM

Quote:

Originally Posted by Ed Wright

Do your engine a favor and put an ATI dampener on it.

x2

james schaechter · 03-02-2013, 03:14 PM

Back in the 80's we put an aluminum balancer, I guess it was really not a balancer, just a hub that Moroso sold on our 427. It looked nice, it was very light, it was cheap too!
When we put it on the car, it even seemed like it revved up real quick! After it was on the car a few runs, we got tired of picking up all the crap that shook off of the car! It unscrewed almost every meaningful bolt on the car! Even the transmission case cracked!

It made someone a real neat looking ashtray.

Your story made me think of that one we had. Save a little, Spend A Lot! LOL.

03-02-2013, 06:14 AM	#1
Bobby Zlatkin Member Join Date: Mar 2003 Location: Mills River, NC Posts: 417 Likes: 0 Liked 0 Times in 0 Posts	sbc harmonic balancer I have a late model one piece rear seal block and the correct flexplate (externally balanced). Can I use a small diameter (6 3/8") mid-sixties, low-perf 327,neutral balanced balancer here? Using an early 80's timing cover, TDC is 10 degrees advanced from the mark on the timing tab, but I'll allow for that. I'm thinking the late model one piece rear seal crank is keyed different. Allowing for that, is there any reason this hybrid (my term, no one elses. I could use the term bastard, but that's not nice) won't work? I hate to keep running out and buying stuff when I have it in the shop. Just for a different year. Call me cheap, or call me frugal. Your call. Thanks in advance. Adger, I know you could help me. __________________ Bobby & Norene Zlatkin L/SA

03-02-2013, 08:08 AM	#2
randy wilson Senior Member Join Date: Jan 2007 Location: N/A Posts: 882 Likes: 0 Liked 22 Times in 22 Posts	Re: sbc harmonic balancer I don't know a lot, but I know you can't run a 327 balancer, on an externally balanced engine of any kind. __________________ don,t have one

03-02-2013, 10:30 AM	#3
Tom keedle Senior Member Join Date: Dec 2008 Location: Berthoud, Coloraduh Posts: 695 Likes: 13 Liked 8 Times in 7 Posts	Re: sbc harmonic balancer yep, it'll work but the timing mark's will be way off UNLESS you use the 327 (or 283) timing cover...or just mak you're own pointer..the 1 piece rear main engines were balanced at the flywheel, not the balancer 400's were a different critter __________________ without losers,winning means nothing.

03-02-2013, 10:59 AM	#4
randy wilson Senior Member Join Date: Jan 2007 Location: N/A Posts: 882 Likes: 0 Liked 22 Times in 22 Posts	Re: sbc harmonic balancer OK, didn't know that. Never too old to learn something new. __________________ don,t have one

03-02-2013, 11:00 AM	#5
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: sbc harmonic balancer Do your engine a favor and put an ATI dampener on it. __________________ Ed Wright 4156 SS/JA

03-02-2013, 03:14 PM	#7
james schaechter VIP Member Join Date: Dec 2004 Location: Cumming GA Posts: 1,994 Likes: 1,296 Liked 1,440 Times in 301 Posts	Re: sbc harmonic balancer Back in the 80's we put an aluminum balancer, I guess it was really not a balancer, just a hub that Moroso sold on our 427. It looked nice, it was very light, it was cheap too! When we put it on the car, it even seemed like it revved up real quick! After it was on the car a few runs, we got tired of picking up all the crap that shook off of the car! It unscrewed almost every meaningful bolt on the car! Even the transmission case cracked! It made someone a real neat looking ashtray. Your story made me think of that one we had. Save a little, Spend A Lot! LOL. __________________ James Schaechter 3163 STK