Torque converter/Flexplate
05-27-2012, 12:00 AM
#1
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Car: 1983 Z-28
Engine: 454
Transmission: TH700R4
Axle/Gears: 7.5" with 3.23 gears
Torque converter/Flexplate
Ran into a issue today while swapping a big block in my 83 camaro. It went in just as easily as the small block did, however when I went to bolt the torque converter to the flex plate i found that the holes do not line up.The transmission is a 700r4 (out of a 93 caprice) any Ideas? Flex plate change or torque converter?
Oh I should probably add that the engine is out of a 90 chevy truck
Oh I should probably add that the engine is out of a 90 chevy truck
05-27-2012, 11:08 AM
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Car: 1983 Z-28
Engine: 454
Transmission: TH700R4
Axle/Gears: 7.5" with 3.23 gears
Re: Torque converter/Flexplate
Thats what I am asking, shopping for what, just a flexplate or will I need a converter?
Just thought of something...The transmission that that was in the donor vehicle was a TH 400. Could the flex plates possibly be different between the three and the four speed transmissions
Just thought of something...The transmission that that was in the donor vehicle was a TH 400. Could the flex plates possibly be different between the three and the four speed transmissions
Last edited by davesengineshop; 05-27-2012 at 11:49 AM.
05-27-2012, 12:23 PM
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Car: Yes
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Re: Torque converter/Flexplate
The stock flex plates are slightly different, but not enough to be much of a problem.
The difference is, the older trans bolt circle is some convenient even-number type of SAE measurement, and the newer one is some metric equivalent. Most aftermarket FPs are slotted to accomodate both. You can do the same to your stocker.
The difference is, the older trans bolt circle is some convenient even-number type of SAE measurement, and the newer one is some metric equivalent. Most aftermarket FPs are slotted to accomodate both. You can do the same to your stocker.
05-27-2012, 12:31 PM
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Car: 1983 Z-28
Engine: 454
Transmission: TH700R4
Axle/Gears: 7.5" with 3.23 gears
Re: Torque converter/Flexplate
Ok that helps a lot. Probably a good Idea To get a SFI flexplate any way
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