I'm working on repairing a K&N filter base plate on a sprinter. I don't have all my engine parts in the shop right now and I need to know the butterfly shaft center distance on -12 heads and 2-11/16" Engler's.

Would it be the same as -10 heads and 2-1/2" Engler's (I can mock up old parts and see)

Thanks guys,
Tony

Tony, just Google Engler Machine, in Princeton, In, and get his phone number and call him, he's busier than busy right now, but I'm sure he'll be able to answer your question. Bob