George351's engine is very similar to mine, same carby,manifold, fuel pump, he has a slightly smaller cam and a little more compression, it makes 520hp with port filled 4v's.
Mine has 270rwkw with stock heads, just a bit of a clean up on ports, which i believe is around 470 to 480hp at the fly ?
correct me if im wrong but this points around 40hp gain with filled ports.
Originally Posted by george 351
My cam is high 250's/mid 265 @50 and low 600's lift
Heads set up by superflow
Internally balanced crank to a bees dick specs
Aftermarket balancer(not sure which brand or what type)
Billet 4 bolt mains on all caps
Oil restrictors and external oil feed to rear
Holley pro strip annihilator ignition
Mallory 140 & 1/2 inch fuel line
1 7/8 primaries into duel 3''
Shift at around 7200/7300rpm
Originally Posted by falcon coupe
Quick spec rundown as follows:
Standard 4v heads with single groove valves
Cam, Crow solid 272 / 280 duration @ 50, 630 thou lift
Holley 850 dp with 1" spacer (all under bonnet)
Holley strip dominator manifold
Zero deck height
TRW flatop pistons
cold dipped rods
4ma crank (bottom end balanced)
Pacemaker extractors 2" primary with twin 3' x-membered exhaust.