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02-25-2009, 02:55 PM
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#1 |
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Alright Alright Alright
Join Date: Mar 2004
Location: Midland, Texas
Posts: 1,672
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wobbley flywheel
i just put my goodwrench 350 back in and have driven it for about 3 weeks now. i notice that under acceleration, there is a faint rattling sound from the motor. i got under the truck and noticed that the flywheel was wobbling a bit but the converter was fine. is it common for a flyweel to warp? what kind of damage could this be doing?
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1972 Cheyenne Chevrolet red and white 357ci, Vortec heads, GM Performance high rise intake, Comp 268H .454/.454 218/218 110 LSA Quadrajet carb, Flowtech headers, 2.25 40 series HEI, Curve kit, TH 350, 3.07 gears 275/60/15s on 15x8 rallies |
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02-25-2009, 03:30 PM
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#2 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: wobbley flywheel
couild be the bolts holding flywheel to crank loosened up// maybe not enough thread lock was used on the bolts
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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03-05-2009, 10:30 PM
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#3 |
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Registered User
Join Date: Oct 2008
Location: CALGARY, ALBERTA
Posts: 62
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Re: wobbley flywheel
If it is not loose bolts it could be cracked flywheel (not good). I wouldn't let it go it is not going to cure itself!!!
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03-05-2009, 11:05 PM
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#4 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: wobbley flywheel
check the converter bolts... more likely to be converter bolts than flexplate to crank bolts.
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03-06-2009, 02:17 AM
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#5 |
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Registered User
Join Date: Mar 2007
Location: San Pedro River, SE Arizona
Posts: 734
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Re: wobbley flywheel
If it is NOT loose bolts on either, it almost certainly is a cracked flex plate and this is not good for the autotrans. If cracked, probably near or between the purpose holes. This wobble soon would cause wear and then shavings in the trans - pump will send them throughout - then a trans rebuild may be in order. Get a good light and check for cracks - and if cracked, drive as little as possible until you replace it. There is a heavier duty version of the flex plate - I put one in but do not remember the designation. Good luck.
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CCCC 67 Sting Ray Coupe 327 4sp; 68 K10 Suburban 327 4sp; 69 K20 Lifted 383 4sp; 69 C80 Fire Truck 478 V6 5sp/2sp; 69 C20 Longhorn 327 4sp; 70 C30 Wrecker 350 4sp; 70 C30 Flat Bed 350 4sp; 71 C20 LWB 350 4sp; 72 K5 Blazer 350 4sp; 72 C30 Flat Bed Gooseneck Hauler with sleeper 350/TH400; 72 C20 Longhorn 402 4sp; 52 Mack LTL Supercharged Cummins 5sp x 3sp; 01 Dodge 5.9 HO Cummins 6spd; 02 Safari Trek 2430 8.1 Vortec on Workhorse Chassis; 03 Silverado 2500 HD 4wd Duramax/Allison Moved but still in the family 70 C20 Custom Camper 350/TH350; 72 K5 Blazer CST Highlander 350/TH350 Recently sent to new homes 72 C30 MoHome 402 4sp; 72 K5 Blazer Conv 350 4sp; 75 GMC 6000 Aerial 350 w Allison; 72 GMC 3500 Utility 350 4sp; 70 GMC 3500, 350 4sp |
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03-06-2009, 06:28 AM
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#6 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,862
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Re: wobbley flywheel
FYI,manuals use flywheels and automatics use flexplates.I`d suspect loose convertor bolts most likely and flexplate bolts next considering the recent install.If they are tight,pull the trans and check the flexplate.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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03-06-2009, 07:44 AM
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#7 |
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Alright Alright Alright
Join Date: Mar 2004
Location: Midland, Texas
Posts: 1,672
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Re: wobbley flywheel
i plan on droping the transmission and running the motor and checking the flexplate by its self. i will keep yall posted.
__________________
1972 Cheyenne Chevrolet red and white 357ci, Vortec heads, GM Performance high rise intake, Comp 268H .454/.454 218/218 110 LSA Quadrajet carb, Flowtech headers, 2.25 40 series HEI, Curve kit, TH 350, 3.07 gears 275/60/15s on 15x8 rallies |
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