The following information is provided by Dave Dare ~ simplyconnected & John Pizzi ~ jopizz.
Here are the Bore and Stroke measurements for the various "FE" engines.
CI--Bore ------------Stroke
332 4.000 in (101.6 mm) 3.300 in (83.8 mm)
352 4.002 in (101.7 mm) 3.500 in (88.9 mm)
360 4.052 in (102.8 mm) 3.500 in (88.9 mm)
361 4.047 in (102.8 mm) 3.500 in (88.9 mm)
390 4.052 in (102.9 mm) 3.784 in (96.1 mm)
391 4.052 in (102.9 mm) 3.784 in (96.1 mm)
406 4.130 in (104.9 mm) 3.784 in (96.1 mm)
410 4.054 in (103.0 mm) 3.98 in (101.1 mm)
427 4.232 in (107.5 mm) 3.784 in (96.1 mm)
428 4.132 in (105.0 mm) 3.98 in (101.1 mm)
All "FE" series engines have 352 cast into the blocks, unfortunately. Keep in mind that a 352ci has the same Stroke (3.500) as a 360ci and a 361ci engine, but different Bore sizes. To determine if your 352ci is a 352ci or something else, do this.
Remove the #1 spark plug. Manually turn the crank to the point where piston #1 is at dead-bottom to the top edge of the cylinder wall. Measure the depth of the cylinder with a rod, stick, or ruler. Measure the distance between the piston dead-bottom to the top edge of the cylinder wall. If the stroke measures 3.500" you have a 352ci engine. If it measures 3.784" you have a 390ci engine. Or a 391ci, or 406ci, who have different Bore sizes, but the same Stroke measurements. See the chart above.
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Created: 7 May, 2020
Last Edited: 7 May, 2020