420cc Engine kit. for GX390sComes With:
Kit includes all the internal parts you need to assemble a Modified, Outlaw or Open style small block.
The crank included is a custom Billet crank that offers .175" longer stroke than a Honda GX200 or Clone 196cc crank and .135" longer than a Predator 212cc crank machined from a solid bar of 4340 Chromoly steel and is far superior in strength over OEM cranks. Crank is precision balanced when using piston sizes 2.678" or 2.756". Piston sizes from 2.815" to 3" may require re-balancing.
The kit allows you to choose from two different length custom Billet connecting rods. The 3.525" rod can be installed without having to cut down the dome of the piston in most blocks. The other option is 3.625" in length and will require .085" to .095" be cut off the dome of the piston to set the "in the hole" height according to the blocks deck height. All rods come with bolts, bearings and installation instructions. Only use 3.525" rod with 3 ring pistons.
420cc Engine kit. for GX390s. The ultimate kit for high Revving GX390s