New SFI magnum Flex plate coming soon.
Here is a 10239 for LA 360/904 on top of a 10242 for Magnum 360/727 on top of a factory 360 Magnum flex plate.
The 10242 has a slightly larger outside diameter than the factory Magnum flex pate, because it has the extra large bolt pattern available for the really big factory torque converter used with some 727 transmissions. I think it was a 11.75" or 12" diameter converter.
The 10242 has about 11.75" diameter. The 10239 has about 10.75" diameter. The 10239 should be the same diameter as the 10241, but I never had a 10241 to verify it.
Here is a 10239 for LA 360/904 on top of a 10242 for Magnum 360/727 on top of a factory 360 Magnum flex plate.
The 10242 has a slightly larger outside diameter than the factory Magnum flex pate, because it has the extra large bolt pattern available for the really big factory torque converter used with some 727 transmissions. I think it was a 11.75" or 12" diameter converter.
The 10242 has about 11.75" diameter. The 10239 has about 10.75" diameter. The 10239 should be the same diameter as the 10241, but I never had a 10241 to verify it.