vibration.........from where????? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chopnchaneled · 04-30-2011, 11:06 AM

I went thur this a couple weeks ago (started at 1900 rpms) and thanks to
some great help from this board it turned out to be the balancer had spun.

checked the timing and the mark was no where to be found.

elf w/capital T · 05-01-2011, 07:30 AM

haha damn, thats nuts, yeah this forum is unreal, knowledge in everything, good thing you got it fixed

**americanmusc1e** · 05-05-2011, 10:32 AM

mine still has a slight vibration.... but I think most of it is coming from the transmission/torque converter....... I haven't driven it in three weeks... I'm trying to sell the 383 and get something that I can afford to drive again....

Old Yeller 1970 · 05-05-2011, 06:50 PM

I recently had a similar experience. Only mine turned out to be either the radiator fan or fan clutch. It would start vibrating around 2500 and get worse the faster the engine ran. I guess it didn't like been spun over 6000RPMs and it warped or something. If you haven't disconnected your fan belt you might try it. It's worth a shot.

fastwillie 696969 · 05-05-2011, 08:13 PM

i think the problem is the harmonic balancer that pioneer is just a rubber type balancer right .there is a internal and external balancer do you know what type of balance was done . i would think it would be internal balance ,check out fluidampr 620101

**americanmusc1e** · 05-08-2011, 12:48 PM

Quote:

Originally Posted by fastwillie 696969

i think the problem is the harmonic balancer that pioneer is just a rubber type balancer right .there is a internal and external balancer do you know what type of balance was done . i would think it would be internal balance ,check out fluidampr 620101

it's an external balance engine here's the crank http://www.summitracing.com/parts/SCA-910375/..... I'm almost sure its in the converter..... my timing was still good last time I checked.... I need to start the truck up but I'm to broke to put gas in it until get out of college for the summer and start working 40hrs/week again....

If I can sell my Banshee and sell my 383 I'll have enough money to start working on putting another motor in my truck......

04-30-2011, 11:06 AM	#26
chopnchaneled Registered User Join Date: Dec 2009 Location: Atlanta, Ga. Posts: 1,050	Re: vibration.........from where????? I went thur this a couple weeks ago (started at 1900 rpms) and thanks to some great help from this board it turned out to be the balancer had spun. checked the timing and the mark was no where to be found.

05-01-2011, 07:30 AM	#27
elf w/capital T Registered User Join Date: Feb 2011 Location: North Carolina Posts: 994	Re: vibration.........from where????? haha damn, thats nuts, yeah this forum is unreal, knowledge in everything, good thing you got it fixed

05-05-2011, 10:32 AM	#28
americanmusc1e Senior Member Join Date: Jan 2009 Location: Austin, TX Posts: 1,079	Re: vibration.........from where????? mine still has a slight vibration.... but I think most of it is coming from the transmission/torque converter....... I haven't driven it in three weeks... I'm trying to sell the 383 and get something that I can afford to drive again.... __________________ -- Josh Instagram: @americanmusc1e OLD SKOOL-- 1970 C10. 454/Th400/3.07 posi Build Thread FARM TRUCK----1949 Chevrolet 3800 Power Wagon Hauler Build Thread 1999 4wd OBS Tahoe - daily. DM me if you can't see photos i posted

05-05-2011, 06:50 PM	#29
Old Yeller 1970 DON'T TREAD ON ME Join Date: May 2005 Location: Crosby County, TX Posts: 989	Re: vibration.........from where????? I recently had a similar experience. Only mine turned out to be either the radiator fan or fan clutch. It would start vibrating around 2500 and get worse the faster the engine ran. I guess it didn't like been spun over 6000RPMs and it warped or something. If you haven't disconnected your fan belt you might try it. It's worth a shot. __________________ Old Yeller

05-05-2011, 08:13 PM	#30
fastwillie 696969 ~Rest In Peace~ Join Date: May 2005 Location: CALIFORNIA NOR CAL Posts: 9,707	Re: vibration.........from where????? i think the problem is the harmonic balancer that pioneer is just a rubber type balancer right .there is a internal and external balancer do you know what type of balance was done . i would think it would be internal balance ,check out fluidampr 620101 __________________ is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex



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