320cc AS-CAST
2.300 intake w/30º BC
1.880 exhaust
45º seats
4.500 fixture
 .200 148/130
.300 216/164
.400 280/195
.500 330/225
.600 370/249
.700 385/255
.800 387/268
.900 390/272
​
NOTES

This is where it all began... a powerful, out-of-the-box cylinder head design matched with an outstanding, unbeatable aerospace casting technology.

BBC Oval Port KIT 

Pro-Filer AS-CAST Big Block Cylinder Heads
Now available in various intake port runner sizes, you can find the right fit for your application. Made in the U.S.A.

• BBC AS-CAST 290, 320cc Bare w/SRH Valve Job. $1895

             Add $200 for CNC Chambers.

• BBC AS-CAST 290, 320cc w/SRH HYD Kit* $2295
• BBC AS-CAST 290, 320cc w/SRH Roller Kit** $2595

             Add $200 for CNC Chambers.

• BBC AS-CAST 365cc Bare w/SRH Valve Job. $2395
• BBC AS-CAST 470cc 12º Bare w/SRH Valve Job. $3895
• SRH Priority Blended Valve Job, SRH Detailed, and SRH Quality

*SRH BBC HYD Valve Train Kits include USA Parts!
SRH .650 lift 1.460 HYD Valve Springs, SRH Competition Valves, USA 7º steel retainers, USA 7º machined locks, USA spring locators, USA studs, USA guide plates, USA viton seals.

• add $125 for PAC HYD springs

**SRH BBC Roller Valve Train Kits include USA Parts!
SRH .800 lift 1.625 Roller Valve Springs, SRH Competition Valves, USA 10º Titanium retainers, USA 10º machined locks, USA spring locators, USA studs, USA guide plates, USA viton seals.  

•  add $125 for Manley .900 lift springs.
•  add $200 for Manley .900 lift triple springs.
•  add $125 for K-Motion K1000H valve springs.

Pro-Filer AS-CAST Manifolds

• BBC Sniper or Sniper JR $450
• BBC Sniper Tunnel Ram $740
• BBC Hitman 12º Manifold $740
• BBC Hitman Tunnel Ram $1150
• Tunnel Ram Top Plates $245