JIMS, cylinder torque plate kit

Compatible with stock 107" (3.937") to 114" (4.016") and 117"/121" (4.075") cylinder bores with OEM bolt pattern. Used to measure cylinder measurements accurately torque plates are essential. These plates simulate stress conditions when boring and honing, which prevents distortion of cylinders walls once cylinders are back to the installed condition. Plates are lasered with the correct torque sequence.
Note: 117" & 121" engines have the same cylinder bore, just the 4.5" vs 4-5/8" stroke is different.