Question about 1984 GMC Suburban

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82 700r4 Have a vibration at about 1000rpm in an 82 700r4. Thought it was an engine problem but it has done the same thing with two different motors. It was behind a 305 in a 82 Chev pu originally and now is behind a 350 in a 70 Nova. It was supposedly rebuilt shortly before I bought it. Converter? Thanks!

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Ok,

so, you had built you pickups from some service center or branded.

there is a problem related to unbalenced flywheel management in engine when it was assembled that time some dust or any other particles jamed on bore.

so you have to now reopen you engine case & clean up your all part bore,pistons,crank case,perticularly flywheel attach to crank,

do with care,

takes time to get result but you will surely sceeded to fix this.

THNX

Posted on May 17, 2008

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Posted on Jan 02, 2017

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