Quote:
Originally Posted by JLMounce
Pretty common. Anyone that runs an overdrive transmission is using a Chevy to BOP adapter. The lone exception of course would be if you're running an aftermarket bellhousing on something like a 4l60e, or you have a 200r4 which has the BOP bolt pattern naturally on it's bell housing.
I run a simple Jegs adapter plate on my engine for the 4l80e. It's easy to install and works as intended.
Most adapter plates will come with spacers to add between your torque converter and possibly the pilot. If you're having a torque converter built, you can also have them add the necessary pads directly to the torque converter as well as adding to the pilot depth where necessary. If the adapter you buy does not come with a pilot extension, they can be purchased independently.
It's also important to note that the adapter reduces the number of bolts physically holding the transmission to the engine and uses some blind holes that mount the adapter to the transmission, but are not connected to the engine in any way. As a result, you have less sheer strength holding the transmission to the engine. This is typically not an issue until you start getting into a good bit of HP and you may be racing the car with very good traction. If you get to that point, a mid-plate is the better option.
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Thanks that's just what I needed to know.