Anyone know where I can find the bolt pattern for the bellhousing part of the 4L60E (where it bolts to engine) with the dimensions of each bolt hole as referenced off the crank centerline? Trying to make an adapter to bolt up to the 4L60E and need these dimensions.

Regards,
Rick

 

Bump; anyone?

 

Might be easier to get a core for what you are doing. Custom stuff such as what you are doing needs to be very precise. Also nice to have to test fit. Here is a photo of the Ls1 bell.