[67Fbird]

Argh... It appears the ancient lakewood shield I have was modified (purchased used in 1993) for a CHEBBY as someone welded in another starter "ear".
Also seems they bored the ID to accept a TRUCK tranny at 5.125 (they screwed that up too...off center)

Short story, does anyone have the dimension data for GM stuff for bellhousing numbers?

Dowel pin to dowel pin to crank centerline?

I can weld in a ring to bring the hole back to Municie ( 4.625) then parallel cut everything...I have TIME....not $$$$ (damn sure not $800 for a bell housing in a budget street car). I would like to only do 1 set up on this instead of having to set it up work it..bore it then come home and measure the off center...to go back and off-set indicate it and re-bore it....tik, tok, goes the clock.