Stroker List - Chevrolet engines

Small Block
CID Block StockBore OverBore Crank Stroke Rod  

Additional comments

334 305 3.766 0.030 400 3.75 5.565 or 5.7 Crank main journals ground to 305 main size. Must check rod balance pad to piston clearance (underside of piston cup). Must check rod to cam clearance with 5.7 rods
366 350 4.000 0.030 350 3.60 5.7 or 6.0 Offset grind crank to achieve 3.60 stroke. Must check rod balance pad to piston clearance (underside of piston cup) when using 6.0 rod
377 400 4.125 0.030 350 3.48 5.7 or 6.0 Use spacers and 350 mainbearings or special spacer bearings
383 350 4.000 0.030 400 3.75 5.565, 5.7, 6.0 Turn crank main journals to 350 main size or use custom 383 crank.
Rod to cam clearance must be checked with 5.7 or 6.0 rod
410 400 4.125 0.015 400 3.81 6.0 Offset grind crank to 3.81 stroke. Check rod to block and rod to cam clearance.
420 400 4.125 0.015 Custom 3.875 5.85 Check rod to block and rod to cam clearance.
434 Custom 4.155 None Custom 4.00 6.0, 6.125 Use Dart or GM Rocket block w/.391 raised cam
454 Custom 4.190 None Custom 4.125 6.0, 6.125 Use Dart or GM Rocket block w/.391 raised cam

Big Block
CID Block StockBore OverBore Crank Stroke Rod   Additional comments
481 454 4.250 0.125 454 4.00 6.135, 6.385 Check cylinder wall thickness before boring. Check rod to oil pan rail, rod to bottom of cylinder walls and rod to cam clearance with 6.385 rods
489 454 4.250 0.030 Custom 4.25 6.385, 6.135, 6.535 6.385 rod recommended. If using 6.135 rod you must use a tall deck block (10.200)
496 454 4.250 0.060 Custom 4.25 6.385 Use 9.800 deck height
509 Custom 4.000 None 454 4.25 6.385, 6.135, 6.535 Use 6.135 or 6.385 rod with 9.800 deck block.
Use 6.5635´rod with 10.200 deck block
541 Custom 4.375 None Custom 4.50 6.535 Use 10.200 deck height
572 Custom 4.500 None Custom 4.50 6.535 Use 10.200 deck height
604 Custom 4.500 None Custom 4.75 6.535 Use 10.200 deck height
605 Custom 4.500 None Custom 4.625 6.535 Use 10.200 deck height
612 Custom 4.500 0.030 Custom 4.75 6.535 Use 10.200 deck height
615 Custom 4.600 None Custom 4.625 6.535 Use 10.200 deck height
632 Custom 4.600 0.030 Custom 4.75 6.535 Use 10.200 deck height
638 Custom 4.625 0.030 Custom 4.75 6.535 Use 10.200 deck height
723 Custom 4.625 0.030 Custom 5.375 7.645 Use Merlin Superblock (11.625 deck height)

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