Big Block Clones LLC
Big Block GX and Clone Crankshaft - 72mm Stroke
Big Block GX and Clone Crankshaft - 72mm Stroke
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Add some displacement to your engine with our 72mm stroke crankshaft! Fits 10-Bolt Big Block GX clone engines.
- 90mm bore = 458cc
- 92mm bore = 479cc
- 94mm bore = 500cc
There are several good combinations of pistons and rods that go with this crank and our 94mm block. Here is a table with part suggestions that can be used to assemble a 500cc stroker:
| Component: | Height in Inches | Height in MM |
| Deck height of BBC LLC Gen2 94mm block | 6.897" | 175.2mm |
| 72mm Stroke Crank Throw | 1.417" | 36mm |
| EC Pinnacle Rod 4.470" PN# 8272 | 4.470" | 113.538mm |
| JE Piston for DRZ400 PN# 183051 | 1" | 25.4mm |
| Total Compression Stack Height | 6.887" | 174.935mm |
| Amount piston is below zero deck with JE Forged piston for the DRZ400 with 1" compression height | 0.010" | 0.262mm |
You can also use a Niche 94mm piston for a DRZ400 and you will be 0.018" in the hole at TDC with the combination above. The Niche piston's part number is 13001-S006, and it is available from Amazon.
*NOTE that you will have to remove about 0.030" from the sides of the small end of the EC connecting rod to fit these pistons. It can be removed using a belt sander or the rod can be sent to a machine shop to be clearanced for the piston.*
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