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07-17-2023, 12:25 PM
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#1 |
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Junior Member
 
Join Date: Jun 2023
Location: Suwanee, Ga.
Posts: 21
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Flexplate size?
I/m going to install a 700r4 transmission in my 1970 C10 with the factory sbc 350 and a 3 speed standard on the column. I have the trany, and converter. But what size (tooth) flexplate do I need to buy? 153 tooth or 168 tooth?
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07-17-2023, 06:31 PM
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#2 |
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Senior Member
 Join Date: Oct 2014
Location: Eagle, ID
Posts: 2,966
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Re: Flexplate size?
Here's a quick read that should help you. https://www.speedwaymotors.com/the-t...te-guide/28655
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07-25-2023, 01:37 PM
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#3 |
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Registered User
Join Date: Oct 2013
Location: Lincoln, NE
Posts: 115
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Re: Flexplate size?
Either should work, depending on the starter used.
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07-25-2023, 02:17 PM
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#4 |
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Registered User
Join Date: Jul 2018
Location: Catskill Mountains,NY
Posts: 8,264
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Re: Flexplate size?
Remember to get one for a two piece rear main . But the size is really up to you and the starter
__________________
Mark 72 c20 custom camper Husky edition, 66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark 1969 AMX , 1968 c20 stepside ,85 K20 1977 Suburban sold 68 anniversary. |
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07-26-2023, 12:43 PM
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#5 |
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Registered User
Join Date: Jun 2021
Location: Buckeye, AZ
Posts: 87
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Re: Flexplate size?
I just went through the same thing. Replaced the 4spd on my 67 with a 700r4. Not only did I have to buy a spacer for the aftermarket crossmember that I bought, I grabbed a 168 tooth flexplate, thinking more torque leverage. I also had to buy a new starter. Well after all that, with the starter moved out more due to the bigger flexplate, the exhaust was in the way. So I also had to get a set of headers and run a new exhaust system.
Rob |
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