B&M Flex plate Question

[Valkman]

I have a stock 360 block that I'm bolting to a 904 trans and I'm looking into aftermarket TQ's. From what I understand (please correct me if I'm wrong) all SBM flex plates are the same (unbalanced and the needed balancing is on the converter). B&M has a PN 10239 for this application:

http://www.bmracing.com/products/10...-360-cid/?mk=43&yr=1971&md=2318&smd=&eng=5385

Which from the picture looks to have been balanced, so if this this is the case do I need a balanced convertor? I tried contacting the B&M's tech service line and they seem to be clueless about it :banghead:

 

[67Dart273]

SB "LA" flex. The magnum ones are different, and those engines are balanced differently

If you are running a neutral balance converter (no weights for 360) then the BM plate you referenced is the one you want

 

[rumblefish360]

All the "LA" flexplates are the same except in possible converter bolt spacing.
Magnum flex plates are different.
360 converters are balanced on the converter from the factory. The "LA" & Magnum are balanced differently.
Go to the B&M web site and find your part.

 

[70aarcuda]

you have the correct one is your link

 

[Valkman]

Thanks all, that's what I figured, the tech guy I called at B&M didn't seem to know anything and he told me I'd have to use a 360 converter with it!

I have 71 LA 360 block by the way.