I run an IMI type mini-starter in my 455 in a Formula and I think it took the same 2 shims that were used on the stock starter. No slow starts ever and a lot of clearance for larger pipes or headers.
__________________
'72 Formula 455HO TH400, Revere Silver, black deluxe
'74 Trans Am SD 4 speed, Admiralty Blue, blue deluxe
|