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#1 V12 bolt pattern drawing

Posted: Sat Nov 26, 2016 4:56 pm
by jagwit
Does anyone know of, or have a drawing for the pre-HE V12 bolt pattern?

#2 Re: V12 bolt pattern drawing

Posted: Sun Nov 27, 2016 12:24 am
by PeterCrespin
It's the same as the HE bolt pattern. Only the dowels differed between BW and GM auto gearboxes. The 6 L block was different, but any esrlier bell can still be fitted to a 6 L block as the previous upper left bolt bosses are still there and just need drilling and tapping.

#3 Re: V12 bolt pattern drawing

Posted: Sun Nov 27, 2016 6:50 am
by jagwit
Thank you Peter!

Then my question should be:
Does anyone know of or have a drawing of the 5.3L V12 bell housing bolt pattern showing both HE and Pre-HE dowel positions?