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flex plate #2459853
03/02/18 11:48 AM
03/02/18 11:48 AM
Joined: Feb 2017
Posts: 566
Texas
R
RustyM Offline OP
mopar
RustyM  Offline OP
mopar
R

Joined: Feb 2017
Posts: 566
Texas
511/727- steel crank/6 bolt.

what sfi flex plate for bracket car.
I see the large round ones but know nothing whatsoever about them.
9 inch converter

any recommendations?

Thanks

Re: flex plate [Re: RustyM] #2459868
03/02/18 12:32 PM
03/02/18 12:32 PM
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
hemi-itis Offline
I Live Here
hemi-itis  Offline
I Live Here

Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
B&M will be fine.


HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: flex plate [Re: RustyM] #2459921
03/02/18 02:27 PM
03/02/18 02:27 PM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
master
dvw  Offline
master

Joined: Mar 2006
Posts: 9,791
MI, usa
I run the B&M as well. Aprox 900 hp, no issue.
Doug

Re: flex plate [Re: RustyM] #2459928
03/02/18 02:58 PM
03/02/18 02:58 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,007
Bend,OR USA
I use the Mopar brand for SFI, they only offer the one with the H.D. 11 inch bolt pattern with the larger 7/16 inch converter bolts in both 6 bolt 440 and 8 bolt hemi patterns scope up
I've heard to many complaints on the B&M plates not fitting all converters correctly for me to try one down
Maybe it was the converters, maybe not confused shruggy I've never heard anyone complain on the Mopar H.D. not fitting Mopar race converters of any brand work


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: flex plate [Re: RustyM] #2459952
03/02/18 03:57 PM
03/02/18 03:57 PM
Joined: Jan 2003
Posts: 2,289
NE Ohio
DoubleD Offline
top fuel
DoubleD  Offline
top fuel

Joined: Jan 2003
Posts: 2,289
NE Ohio
The Mopar ones as of late seem to crack after awhile - We had one crack and switched to the B&M - and yes you have to bench fit them first as they are on the tight side when bolting to the converter - I think the real issue is converter mounting lugs can vary just enough to make the difference - on both of the B&M's we use - we had to reem the converter holes a little - no problen since

Re: flex plate [Re: DoubleD] #2459955
03/02/18 04:07 PM
03/02/18 04:07 PM
Joined: Jan 2003
Posts: 2,289
NE Ohio
DoubleD Offline
top fuel
DoubleD  Offline
top fuel

Joined: Jan 2003
Posts: 2,289
NE Ohio
I found this ATI high HP solution - but I would guess the converter has to be made for it- a dual bolt pattern - our new converteres came with this this dual pattern lug on them allowing for 8 bolts - but we are using the B&M hence the converter has one hole tapped to 7/16 at each lug while the other is 1/2"

ati-915549_ml.jpg
Last edited by DoubleD; 03/02/18 04:48 PM.
Re: flex plate [Re: RustyM] #2463065
03/08/18 01:22 PM
03/08/18 01:22 PM
Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
B&M on my stuff.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax






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