258cc - 72mm x 63.5mm Forged Wiseco Small GX Short Block Kit

Everything you need to assemble a 258cc small block GX200 clone Short Block. You will need to clearance the block and your cam, but this crank, rod, and piston in the TC225 block the piston will sit 0.010"/.3mm below the deck at TDC. Use a head gasket that is a minimum 0.020" thick. Clearancing will be required for assembly.

This kit includes the following: 

72mm bore x 136.8mm deck height TC225 block

Cast aluminum 7 bolt side cover

Forged steel 63.5mm crankshaft with Briggs 1" rod journal and standard GX200/Clone flywheel taper

ARC 6768 billet 3.575" x 1" stroker connecting rod with bearing set

Wiseco forged 72mm x .550" compression height x .490" wrist pin two ring piston with rings and clips

ARC 6521 short .490" diameter heavy duty tool steel wrist pin

2x Crankshaft bearings

2x Crankshaft seals

2x Magnetic drain plugs with safety wire hole

1x Oil sensor and governor hole plug kit

1x pair of solid side cover dowels

1x pair of head dowel pins

1x set of side cover bolts

1x set of Grade 10.9 head bolts

Gasket kit with 0.045" thick head gasket

Optional:

ARC billet flywheel of your choice: 6619, 6669, or 6689.

ARC 6057 dual ball bearing billet side cover kit: Also removes one of the bearings, one of the seals, side cover dowels, and the side cover bolt set that you don't need from the final price.

Professional assembly service: We clean, measure, clearance, and assemble all of these components into a pre-built short block that's ready for your coil, blower tins, recoil, head, and carb to be bolted on for only $250 extra.