903A Plus 2.50 Cylinder Heads

A Plus 2.50; Bare (with CNC finished seats and guides)

A Plus 2.50; Assembled

511 cfm Intake; peak flow*

390 cfm Exhaust, w/ pipe (350 cfm w/o pipe)

New CNC combustion chambers, w/ CNC intake/exhaust ports

Cast iron seats – interlocking

Bronze guides

2.50” stainless steel intake valves**

1.82” stainless steel exhaust valves**

Steel spring seats

Triple valve springs for 1.150” max lift

Oil seals

Titanium retainers

Steel valve locks

3/8” guide plates

* performed at 28” of water, 4.625” bore; intake port bellmouth
** Titanium valve upgrade options available

Our Price:

$4,299.00 USD

Assembly Options

None
Add +$1,300.00 USD

Titanium Exhaust Valve

None
Add +$700.00 USD

Titanium Intake Valve

None
Add +$700.00 USD

Total Price