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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

flexplate difference

  • Thread starter Thread starter Mike66
  • Start date Start date Sep 30, 2011
M

Mike66

New Member
Oct 5, 2009
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Sep 30, 2011
#1
  • Sep 30, 2011
  • #1
can i use the same flexplate from my 289 to bolt it up to my 302? i read some where that it can be different somthing about balance. if so how do i know which one i need?
 

robbz28

10 Year Member
Sep 23, 2009
775
5
39
Epps, LA
Sep 30, 2011
#2
  • Sep 30, 2011
  • #2
If im not mistaken......the later 302 engines (after 1981) used 50 oz imbalance flexplates....previous 289 & 302's used a 28 oz flexplate.....it depends really on the crankshaft, but if you know your engine came out of anything after 1981 you should need the 50 oz.
 
M

Mike66

New Member
Oct 5, 2009
17
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1
Sep 30, 2011
#3
  • Sep 30, 2011
  • #3
it is a newer than 1981 engine. so i need 50oz IM-balanced correct? does c4 and aod take the same flexplate?
 

rbohm

Founding Member
Apr 12, 2002
6,698
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tucson,az
Sep 30, 2011
#4
  • Sep 30, 2011
  • #4
Mike66 said:
it is a newer than 1981 engine. so i need 50oz IM-balanced correct? does c4 and aod take the same flexplate?
Click to expand...

no they do not. however C4 flexplates with the proper imbalance are available since the AOD was not used until 82 or 83. check with summit racing, they ahve a good selection of flexplates.
 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
Sep 30, 2011
#5
  • Sep 30, 2011
  • #5
You need a unique plate fore the AOD, but both the 157T and 164T wheel are available for the 289/302.

 
M

Mike66

New Member
Oct 5, 2009
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Sep 30, 2011
#6
  • Sep 30, 2011
  • #6
can i use this one? its for the c4 trans...

TCI Auto 529620 - TCI Flexplates - Application - SummitRacing.com
 
M

Mike66

New Member
Oct 5, 2009
17
0
1
Sep 30, 2011
#7
  • Sep 30, 2011
  • #7
or this one will be a better buy? it says i can use it for c4 and aod...

Early Mustang AOD Conversion Kit, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973
 

rbohm

Founding Member
Apr 12, 2002
6,698
550
204
tucson,az
Sep 30, 2011
#8
  • Sep 30, 2011
  • #8
so you want to bolt an AOD in place of a C4? if that is the case, and you have the post 81 302 with the 50oz imbalance, then you just need the AOD flexplate. i would also recommend using a full pressure valve body for the AOD and use the TV cable only as a kick down cable. full pressure valve bodies are available from two sources;

VB AOD

Welcome to Lentech Automatics.com
 
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