Flexplate - TCI vs B&M?

-
Demonx2

Demonx2

FABO Gold Member
FABO Gold Member
Joined
Dec 10, 2019
Messages
2,786
Reaction score
5,618
Location
Florida - near Ocala
Wondering if anyone has any experience with or knowledge of the differences between the B&M internally balanced flexplate #10230 and the TCI Forged plate #145200? I've used a similar TCI plate on a big block car many years back without issue. Wondering what the reason for going to the larger/higher inertia B&M might be. Either one will bolt to my 8" ATI converter so it really comes down to whether both will do the job. The TCI is stated to be handle well over 600 hp/600#-ft which is above my hardware (car is a 408/727 still "in build"....) I'm more prone to use the TCI due to the lower mass/inertia but thought I'd ask all of you for any wisdom/experience you might have. Thx!!
 
I take it your 408 will be internally balanced?

I like the solid B&M because they are stronger and never seen one crack. The TCI "winged" flexplate, similar to the Mopar Performance version, is obviously lighter. I have had one crack, but it was after a lot of runs & abuse in a mid-10 second Challenger. B&M use to have a smaller version of their solid type without the outer bolt holes. But they discontinued it.:mad:

Weight becomes more of a factor the further away it is from the centerline. There is a performance difference, but likely not obvious. I've used the B&M on my low 11 second Dart. If IHRA still ran Crate Motor Stock and I was still looking for every little bit of performance, I'd go with the 'winged" TCI/Mopar. I did put one on my 12 second Aspen.

Bottom line, the TCI/Mopar Perfomance version will do the job.
 
Thx for the input - exactly the type of experience I'm looking for. This car "should" run in the low-mid 11's but that remains to be seen (I get nervous when I see others on here that are running in the 12's with a similar set-up.) Yes, engine is internally balanced 408 - fairly typical build with ported Eddy heads and a solid flat cam. My 4300# Charger with a mild 440 used the old DC "winged" flexplate without issue but that torque converter stalled at about 3200 rpm (car ran mid-12's at almost 111). This Demon's 8" ATI should stall in in the 4500-5000 range so it will be harder on the flexplate. Also, this 408 is well above my Charger's 440 on torque and power so I have to consider that also. It just looks to me like B&M may be using a GM flexplate and calling it a Chrysler part without engineering it hence why I was asking for input. Thx again - let's see if anybody else has some history on these too!
 
@pittsburghracer ...whos plate was this?
51650f8b-34cc-4bbb-bcff-aca4581f01a8-jpeg.jpg
 

You must log in or register to reply here.
-
Back
Top Bottom