Doug Grey came to use wanting to build a strong reliable power plant for his 1967 Firebird.  Doug wanted 500 to 600 horse with a round port aluminum head.  Well we reached right for a set of KRE High Ports and one of our custom ground hyd roller cams and BANG!  608.9 hp at 5900 rpm and 593.5 ft lbs of torque at 4700rpm all package in a tiny little 455 on pump gas!   Should make for a fun ride in Doug’s ’67 Bird!

The engine uses the following components:

  • Stock Pontiac Block 4.155 bore
  • Eagle 4.21″ stroke forged crank
  • BONE STOCK 80 cc KRE High Port Heads
  • KRE Northwind intake manifold
  • Eagle 6.625 rods w/ full floating pins
  • Moroso Oil pan
  • Melling Oil pump with TIP SD-Oil plate installed
  • Total Seal Rings file fit
  • Federal Mogul Rod and Main bearings
  • KB Piston netting 10.5 to 1 compression to run on pump gas
  • Druabond Cam bearings
  • Trend Pushrods
  • Custom Ground Tin Indian Performance Hyd Roller Camshaft
  • Johnson Short Travel Hyd Roller Lifters
  • Tin Indian Performance Billet-TEK valve covers
  • Tin Indian Performance Complete Gasket Set with TIP-RM300 Viton ® rear main seal
  • Felpro head gaskets
  • MSD Pro Billet Distributor
  • Taylor Wires
  • PRW Pro Series aluminum roller rockers
  • NGK Spark Plugs
  • ARP Head Studs
  • Flowkooker Water Pump
  • KRE Timing Cover
  • Pro Race Balancer
  • Pro Systems HP1000 cfm 4150 style carb
  • Tin Indian Performance 4150 to RPM 1″ spacer
  • Tin Indian Performance Pontiac fuel pump blockoff kit
  • Engine balanced and blueprinted
  • Dyno Tuned before delivery



The engine makes 608.9 HP at 5900 rpm and 593.5 ft lbs of torque at 4700 rpm



608.9 horsepower 593.5 ft lbs of torque Dyno Sheet