Chevy V8 Bore and Stroke List:
CHEVY V-8 BORE AND STROKE LIST
CHEVY SMALLBLOCK V-8 BORE AND STROKE LIST
262 = 3.671" x 3.10" (5.7" rod)
265 = 3.750" x 3.00" ('55-'57 Gen.I 5.7" rod, '94-'96 Gen.II 4.3 liter V-8 "L99" 5.94" rod)
267 = 3.500" x 3.48" (5.7" rod)
283 = 3.875" x 3.00" (5.7" rod)
293 = 3.780" x 3.27" ('99-later "LR4" 4.8 Liter Vortec)
302 = 4.000" x 3.00" (5.7" rod)
305 = 3.740" x 3.48" (5.7" rod)
307 = 3.875" x 3.25" (5.7" rod)
325 = 3.780" x 3.62" ('99-later "LM7" 5.3 Liter Vortec)
327 = 4.000" x 3.25" (5.7" rod)
350 = 4.000" x 3.48" (5.7" rod)
350 = 4.000" x 3.48" ('96-'00 Vortec, 5.7" rod)
350 = 3.900" x 3.66" ('89-'95 "LT5" in "ZR1" Corvette 32-valve DOHC)(5.74" rod)
350 = 3.900" x 3.62" ('97-later Gen.III "LS1")(6.098" rod)(actually totals 346 cubic inches)
364 = 4.000" x 3.62" ('99-later "LQ4" 6.0 Liter Vortec)
383 = 4.000" x 3.80" ('00 "HT 383" Gen.I truck crate motor) (5.7" rod)
400 = 4.125" x 3.75" (5.565" rod)
Two common, non-factory, smallblock combinations:
377 = 4.155" x 3.48" (5.7" or 6.00" rod)400 block and a 350 crank with "spacer" main bearings
383 = 4.030" x 3.76" (5.565" or 5.7" or 6.0" rod)
(350 block and a 400 crank, main bearing crank journals cut to 350 size)
CHEVY BIG BLOCK V-8 BORE AND STROKE
366T = 3.935" x 3.76"
396 = 4.096" x 3.76"
402 = 4.125" x 3.76"
427 = 4.250" x 3.76"
427T = 4.250" x 3.76"
454 = 4.250" x 4.00"
502 = 4.466" x 4.00"
T = Tall Deck
ALL production big blocks use a 6.135" length rod.
CHEVY 348-409 V-8 BORE AND STROKE
348 = 4.125" x 3.25" (6.135" rod)
409 = 4.312" x 3.50" (6.0" rod)
427 = 4.312" x 3.65" (6.135" rod) 1963 "Z11" SHP drag race
We would like to thank everyone that has contributed to the data provided on this site. This information has been gathered from several sources and has not been verified.
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