Description:

383 JR Motorsports engine featuring GM's Ramjet EFI system. PRC 4340 steel crankshaft Scat 4340 Connecting rods WISECO reverse dome pistons GM 4 bolt main block GM Vortec Bowtie heads GM hydraulic roller camshaft GM RAMJET injection AFI electronics Internally balanced Align honed & square decked Torque plate honed 9.2 to 1 compression operates on 87 octane Includes wiring harness, fuel pump, & ECM. Just add 12 volts & tow fuel lines At sea level or 7,000 ft, at -20 or 120 degrees, this engine offers the drivability we have become accustomed to with electronic fuel injection. (Does not include C-3 stainless shielding or plug wires)