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1968-72 Nova
030" (thin shim)
Ford Racing Big Bore version of the BOSS 302 block makes it simpler and more economical to build really BIG small blocks
75" 30-Spline
Piston Pin Outside Diameter: 0
Oil Rail Support Ring J4155-183 Product:Suit 4.155" - 4.184" Bore 1968-72 NovaOil Rail Support RingSuit 4. 155" 4. 184" Bore J4155 183 155 183 JE Rail Supports feature a special locking detent to prevent rotation of the oil rail and keep the rail support gap 90 from the pin bore opening on the piston. This JE exclusive feature prevents the rail from rotating in the oil ring groove. Oil rail supports prevent the oil ring rails from spiraling off of pistons with short compression distances.
