Which flex plate for MP 175k converter?

-
G

GotDart

Well-Known Member
Joined
May 22, 2004
Messages
1,299
Reaction score
11
Location
Austin, TX
My stroker crank has 6 bolt holes for the flexplate. I plan to use a Mopar Performance 175k torque convertor. I think I need a flexplate with 7/16" holes, correct? So the part number I need is P4528751 and corresponding bolt kit P4120465?
 
Greg, did you get the part numbers all figured out for your MP 175K converter and the flexplate setup? I'm really interested because I'm thinking that's what will be going between my 360 and 904 tranny.
 
No. I still don't know what size bolts the 175k converter uses. I'm still hoping someone will chime in with that info. :) If not, I'll call Mancini and ask them.

But I did notice an error in the flex plate part number I posted. Instead of P4528751, the correct part number for that plate is P4529751. This is a SFI approved flex plate with 6 crank bolts and 7/16" TC bolts.
 
I think I might have that SFI flexplate for a 360/727 combo at home. Let me check on the bolt hole size for you. I will also sell it cheap since I am using a b&m plate for a 904. Let me know if you are interested.
 
What I have is a Mopar Performance p/n p4529751 sfi 6 bolt flexplate. The convertor bolt holes are 7/16. New in box, I'll sell it for $20 if you want it let me know.
 
i recently installed a 166k mopar converter in my 73 duster 727 and it uses the stock 5/16 thread bolts...the flexplate to crank bolts are stock also..
 
Thanks 70aarcuda, you saved me the aggravation of buying the wrong parts.

Sorry 66dartman, the price is right but the application isn't.

Looks like Mopar Performance does not have a SFI rated flex plate for the 'econo' converters using 5/16" bolts. They list a non-SFI flex plate with part number P4876821 that sounds like it should work. The corresponding bolt kit for this is P4876820. And wouldn't you know it, the non SFI rated plate and 5/16" bolt kit is more expensive than the SFI rated plate and 7/16" bolts. :roll:

The B&M flex plates are $75, but I don't see one for internal balanced 6-bolt crank and a 904 transmission. Are there any other neutral balance flex plates with 6 crank bolts and 5/16" TC bolt holes available?
 
You must log in or register to reply here.
-

Back
Top