350 Chevy 420 horsepower – 430 lb-ft torque

350 small block Chevy 420 horsepower – 430 Lb-Ft torque

4 bolt main block that was bored and honed .030 over forged 3.48 stoke crankshaft, 5.7″ connecting rods with new bolts, forged pistons, Clevite rod and main bearings, and speed pro pistons rings were used

The block

The block was deburred removing all extra casting flash with a carbide grinding bit, all the threads in the block was tapped and cleaned. The front camshaft oil galley holes were tapped and threaded plugs were installed.

Dura bond cam bearing were installed

To ensure all the debris from the machine work is removed from the oil galley’s the small plug below the rear main cap is removed the oil galley is cleaned and a new cap is installed.

The bottom end

A torque plate was used to ensure the most accurate piston to cylinder wall clearances

Speed-Pro Forged Pistons and moly piston rings were installed the piston rings were hand filed to ensure the proper ring end gap

Build spec sheet

Oiling system

The Mellings M55 standard pressure/standard volume oil pump is blue printed and dyno tested verifying a maximum pressure of 70 PSI.

The oil return hole from the cylinder heads to the lifter valley was partially blocked so the edge of the block was opened up with a carbide grinder allowing oil to flow back to the oil pan quicker. All oil passages and return holes are chamfered ensuring smooth oil flow throughout the entire engine

Valve train

Comp Cams XE284H-10 camshaft, 972-16 valve springs, custom Trick Flow 7.600″ push rods, full steel 1.5 roller rocker arms, and a double roller timing chain were installed. The camshaft was degreed straight up