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Big Block flex plate #2466159
03/14/18 12:59 AM
03/14/18 12:59 AM
Joined: Jan 2003
Posts: 1,090
Saskatchewan, Canada
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barracudabob Offline OP
super stock
barracudabob  Offline OP
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Joined: Jan 2003
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Saskatchewan, Canada
I want to replace the flex plate on my '76 440. This is an externally balanced engine, and has a weight on the converter. Looking at B&M's website, they show one for an externally balanced big block, PN 10237. It has a scallop on one side. When using this flex plate, do I need the weight on the converter as well, or can any converter without the weight be used? Thanks in advance, Bob

Re: Big Block flex plate [Re: barracudabob] #2466167
03/14/18 01:21 AM
03/14/18 01:21 AM
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Kern Dog Offline
Striving for excellence
Kern Dog  Offline
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Granite Bay CA
The scallop is there to compensate for the engine balance factor. In other words, the B&M flexplate allows you to use any neutral balance converter. Grind the welds to remove the weights from the converter.

Re: Big Block flex plate [Re: Kern Dog] #2466175
03/14/18 01:40 AM
03/14/18 01:40 AM
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Posts: 2,363
Cotati, CA
Dave Hall Offline
top fuel
Dave Hall  Offline
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Posts: 2,363
Cotati, CA
I'm using one on a 400 with a mech. roller cam. I've seen 7,000 rpm and it is smoother than baby shyt. Changed trans. and to neutral balance converter in mine as well. You no longer need the weights on the converter. up

Re: Big Block flex plate [Re: Dave Hall] #2466268
03/14/18 10:59 AM
03/14/18 10:59 AM
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Wichita
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GY3 Offline
master
GY3  Offline
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Wichita
I used the scalloped B&M on my last cast crank 440 with a neutral balance converter. Worked perfectly.


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Big Block flex plate [Re: Kern Dog] #2466419
03/14/18 03:37 PM
03/14/18 03:37 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 [><]
Originally Posted By Frankenduster
The scallop is there to compensate for the engine balance factor. In other words, the B&M flexplate allows you to use any neutral balance converter. Grind the welds to remove the weights from the converter.

iagree up


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
Re: Big Block flex plate [Re: an8sec70cuda] #2466682
03/14/18 11:49 PM
03/14/18 11:49 PM
Joined: Jan 2003
Posts: 1,090
Saskatchewan, Canada
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barracudabob Offline OP
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barracudabob  Offline OP
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Joined: Jan 2003
Posts: 1,090
Saskatchewan, Canada
Thanks for the info!







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