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97snakedriver · 11-01-2000, 02:43 PM

The 4.6 and the 5.4 are different versions of the modular engine. The 5.4 has the same bore as the 4.6, but a longer stroke, but the 5.4 block has a higher deck height, so you can't stroke a 4.6 to 5.4, and the 5.4 is considerably taller.

11-01-2000, 02:43 PM	#12
97snakedriver Registered Member Join Date: May 1999 Location: Blacksburg, VA Posts: 1,526	The 4.6 and the 5.4 are different versions of the modular engine. The 5.4 has the same bore as the 4.6, but a longer stroke, but the 5.4 block has a higher deck height, so you can't stroke a 4.6 to 5.4, and the 5.4 is considerably taller.