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Username Post: vibration in floor        (Topic#353256)
Posts: 26

Loc: washington state
Reg: 12-23-16
10-01-18 10:30 AM - Post#2747615    

feeling some vibration through the floor and gas pedal at highway speeds (60+) I don't feel it in the steering wheel or see any side mirror vibration. wondering if it could be a drive line out of balance or maybe u joints?


Valued Contributor
Posts: 3676
Loc: Possums Crotch, KY
Reg: 06-26-07
10-01-18 05:34 PM - Post#2747650    
    In response to jrhopkins

I'd also check your motor mounts.


Posts: 697
Reg: 12-09-07
10-01-18 05:45 PM - Post#2747653    
    In response to jrhopkins

Lots of possibilities. Bad tire balance or even a shifted/broken belt in the tire. Bad U joints/carrier bearing. I have seen a bad drum cause a nasty vibration too. Rear axle bearings. Just have to do a lot of narrowing down. Personally I like to start with the options that do not cost any money first. Swapping tires/brake drums, checking u joints, carrier bearing, motor & trans mounts.

1958 Impala 2dr Hardtop Under Construction
1966 Chevelle Malibu Convert M20/350 Aztec Bronze
1987 Sea Ray Pachanga 22
2002 Cadillac Escalade EXT Parts chaser
2007 Trailblazer SS -gone and missed

Posts: 26

Loc: washington state
Reg: 12-23-16
10-09-18 08:12 PM - Post#2748289    
    In response to ragtp66

going to start with the tires. rotate rear to front( radials) and see if that helps. I also thought maybe motor mounts. car was restored about 10 years ago and a 350 installed but don't know if the mounts were the same or replaced.


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