Mike Roxbury came to use wanting to build a strong reliable power plant for his 1977 Trans Am.   Mike wanted to use a Kauffman Performance MR-1 aftermarket block for the foundation of his build.  With all of the delays and challenges that 2020 brought us, we decided to do a custom Firebird Tin Indian Performance logo for Mike’s Billet-TEK valve covers.   Mike was only looking for 500 horse and we more than filled that requirement!  Before we shipped the engine out we did de-tune the combo a bit to make sure his ’77 TA stayed in 1 piece.  Should be a fun ride when he gets the car complete!

The engine uses the following components:

  • Kauffman Performance MR-1 Pontiac block 4.155 bore
  • Eagle 4.25″ stroke crank
  • BONE STOCK 85 cc KRE D Port heads
  • Edelbrock Performer RPM intake manifold
  • Eagle 6.8 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 pump gas
  • Druabond Cam bearings
  • Trend Pushrods
  • Custom Ground Tin Indian Performance Hyd Roller Camshaft
  • Lunati Hydraulic Roller Lifters
  • Custom Firebird / Tin Indian Performance Billet-TEK valve covers
  • Tin Indian Performance Complete Gasket Set with TIP-RM300 Viton ® rear main seal
  • Cometic head gaskets
  • MSD Ready Run Billet Distributor
  • Taylor Wires
  • PRW stainless roller rockers
  • NGK FR5 Spark Plugs
  • ARP Head Bolts
  • 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 545.9 HP at 5500 rpm and 574.8 ft lbs of torque at 4300 rpm



545.9 horsepower 574.8 ft lbs of torque Dyno Sheet

Mike Roxbury 1977 Pontiac Trans AmMike’s 1977 TA – Can’t wait to see it with the new power plant!