|The picture above illustrates the
stronger replacement center main bearing caps from Pro-Gram Engineering
Corp. (#B4.1V6C). The caps are retained by ARP studs (#123-5401). Spot
facing of the rear caps prevents the retaining nuts from interfering with
the oil pan. The connecting rods were reconditioned and the bolt holes
were chamferred to accept ARP bolts (#123-6002). The whole crankshaft assembly
was balanced. The Rollmaster timing gears and chain can be seen in both
photos. The block was fully deburred.
The top view of the assembled short block is illustrated below. Speed-Pro forged aluminum pistons (#L2481F) were utilized with shortened Ohio Piston & Pin piston pins (#P426). The bore is standard. Sealed Power rings with moly top rings (#E-434K) were used. A roller cam button is mounted to the front of the timing gear. The camshaft is a billet steel hydraulic roller unit from Comp Cams (#67-000-9) with 206° duration at 0.050" lift.