Match Race ~ 1970 'Duster 340' vs. 1969 Mustang 'Mach 1' 351W
1969 351W 290 HP
The dual-plane/low-rise cast iron intake manifold (#C90E-9425-E} was a decent unit for bottom-end torque and mid-range power.
But, the small port size really 'suffocated' top-end breathing.
Port Size.................. 1.84" x 1.02"
Throttle Bore Sizes.... 1.437" {Primary} x 1.563" {Secondary}
And, a 'heavy bastard' at 53 lbs.
1969 351W 290 HP
The dual-plane/low-rise cast iron intake manifold (#C90E-9425-E} was a decent unit for bottom-end torque and mid-range power.
But, the small port size really 'suffocated' top-end breathing.
Port Size.................. 1.84" x 1.02"
Throttle Bore Sizes.... 1.437" {Primary} x 1.563" {Secondary}
And, a 'heavy bastard' at 53 lbs.