1994 2452 with 5.7 liter, 4 barrel with Bravo 2 outdrive. Engine serial number 0f274795
As far as I know, it's a Thunderbolt 4 with the "intensifier", or what ever it's called, on the distributor not the exhaust manifold.
In a nut shell: I had a cooling hose blow out. I turned the motor off...