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04-18-2011, 02:55 PM
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#1 |
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Registered User
Join Date: Dec 2009
Location: Atlanta, Ga.
Posts: 1,050
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Engine vibration ?
OK, i've got a 68 stepside, one piece drive shaft,350 vortech engine,with power steering, 700R4 trans.
This problem just started and is getting worse. there is a harmonic or vibration that starts at 1900 rpms and gets worse the more rpms you take it too.even buzz's the steering wheel mirrows etc. It will do it when sitting still in park, so i'm sure it's not in the drive shaft. I've taken all the belts off, still buzz's. checked the flex plate bolts and looked for crack's, replaced the water pump just because. it seems to run fine, no skips. Anybody got a suggestion? I'm kinda thinking the converter, but never had one that was bad and i don't want to just start throwing parts at it. Thanks in advance |
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04-18-2011, 03:02 PM
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#2 |
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 20,036
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Re: Engine vibration ?
my guess would be a bad harmonic balancer. it isn't your driveshaft if it does it while the truck is not moving.
Posted via Mobile Device
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul |
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04-18-2011, 03:06 PM
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#3 | |
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Registered User
Join Date: Dec 2009
Location: Atlanta, Ga.
Posts: 1,050
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Re: Engine vibration ?
Quote:
Didn't know they would go bad ? What happens to them? |
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04-18-2011, 03:08 PM
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#4 | |
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Senior Member
 
Join Date: May 2002
Location: Hammond, WI
Posts: 1,817
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Re: Engine vibration ?
i would unbolt the converter from the flexplate and run the engine. of course, back the converter up so it doesn't interfere with the flexplate. if it still does it, it's not the converter. my guess would be that it's the harmonic balancer though.
__________________
Mike 2001 Dakota R/T - Silver CC - 1 of 1671 •360 w/46RE •392 limited slip 1972 Chevy Suburban - Turquoise/Black 1969 Chevy C/10 - Blue LWB •350 w/ 700R4 •3.73 posi •PS PB A/C - SOLD  Using your turn signal is not "giving information to the enemy" 67-72 FAQ Quote:
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04-18-2011, 03:09 PM
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#5 | ||
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Senior Member
Join Date: May 2002
Location: Hammond, WI
Posts: 1,817
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Re: Engine vibration ?
Quote:
__________________
Mike 2001 Dakota R/T - Silver CC - 1 of 1671 •360 w/46RE •392 limited slip 1972 Chevy Suburban - Turquoise/Black 1969 Chevy C/10 - Blue LWB •350 w/ 700R4 •3.73 posi •PS PB A/C - SOLD Using your turn signal is not "giving information to the enemy" 67-72 FAQ Quote:
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04-18-2011, 04:13 PM
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#6 |
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Registered User
Join Date: Dec 2009
Location: Atlanta, Ga.
Posts: 1,050
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Re: Engine vibration ?
Thanks for the help guys,,,,, My other problem is i'm about 250 miles from home and tools to replace the balancer or do anything heavy (flexplate)
You think i'll screw anything up by driving it back taking back roads instead of the expressway? Thanks again |
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04-18-2011, 07:30 PM
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#7 | ||
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Engine vibration ?
Quote:
__________________
You can review the site's rules here. Quote:
Bad planning on your part does not necessarily constitute an instant emergency on my part.... The great thing about being a pessimist is that you are either pleasantly surprised or right. 
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04-22-2011, 04:06 PM
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#8 |
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Registered User
Join Date: Dec 2009
Location: Atlanta, Ga.
Posts: 1,050
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Re: Engine vibration ?
Thanks Guys, it was the harmonic balancer.
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