C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Flex plate ??

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Old Mar 4, 2011 | 02:36 PM
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Default Flex plate ??

Can someone one help me out . How many tooth on a 91 corvette flex plate 153 or 171. Thanks in advanced
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Old Mar 4, 2011 | 02:37 PM
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153
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Old Mar 4, 2011 | 02:39 PM
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That was quick. thanks
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Old Mar 4, 2011 | 02:53 PM
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One more question do i have to move the tranny or do i have enough room to get it out by just removing torque converter bolts.
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Old Mar 5, 2011 | 12:32 PM
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All that labor. Can anyone recommend a good flexplate internal balance 153t

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Old Mar 5, 2011 | 01:31 PM
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You can push the torque converter back only about 1/8 of an inch without removing the transmission. You wouldn't be able to access the flexplate bolts with a wrench and definitely wouldn't be able to remove the bolts. The tranny needs to be pushed back about 3" at least. I use a Hays SFI approved flexplate.

Last edited by 383vett; Mar 5, 2011 at 02:17 PM.
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Old Mar 5, 2011 | 02:15 PM
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Old Mar 5, 2011 | 10:53 PM
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I've seen some advertise better 60ft with there $200 flexplate, is that true?
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Old Mar 5, 2011 | 11:46 PM
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I hadn't heard that. If it's true, I'm first in line. Willie
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Old Mar 6, 2011 | 11:59 AM
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I know what you mean i'm just trying to get the best one . The labor sucks so if i can improve while repairing it why not.
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Old Mar 6, 2011 | 12:19 PM
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Removal, Haven't done it on the Vette but did on an Impala. Get 4 grade 8 bolts 3/8 X 16 4 inches long. Remove drive shaft. With the trans supported remove all 6 bell housing bolts. Replace two lower and two middle bolts with 4 inchers. With TC loosened slide the trans back 3 inches. Keep it supported. R&R flex plate, slide trans forward bolt up. Might sound complicated but the method does work. I have done two like this, last one took something like 4 hours.
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Old Mar 6, 2011 | 12:50 PM
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I have it out i'm just trying to find the best one for my application.
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