Aeroflow AF95-0427 Big Block Chev V8 315cc Bare Aluminium Cylinder Heads Pair

Aeroflow Bare Aluminium Cylinder Heads Pair

AF95-0427

SOLD AS A PAIR

315cc runner with 121cc chamber

Suit Big Block Chev, Rectangle Port

Aeroflow's big block Chevy cylinder heads are designed for entry-level street performance engines and ideal for operating in the idle to 6750 rpm range.

Made from A356 aluminium castings. These complete heads include larger than-stock 1.625" (41mm) diameter valve spring with damper to handle up to 0.850" (21.5mm) maximum valve lift.

Recommended spark plugs are 14mm x 3/4" reach with flat gasket seat.

The Aeroflow Series of Aluminium Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. These heads utilise ultra-smooth A356-T6 aluminium castings, new as-cast runner and chamber designs produce excellent flow numbers. This combined with a 5-angle competition valve job, diamond-honed bronze guides, hand bowl blending and professional assembly help to outperform some of the best brands in the business.

The Aeroflow Performance big block Chevy cylinder heads are designed for street / race performance engines to give the ultimate in flow. These heads flow 364cfm! Best suited for high revving 454, or 502ci up Big Blocks. Made from A356 aluminium castings, these rectangle port 320cc cylinder heads are ideal for operating in the idle to 6750 rpm range.

Head Specs

• Chamber Volume: 121cc Chamber
• Intake Port Volume: 315cc
• Intake Valve Size: 2.25"
• Exhaust Valve Size: 1.88"
• Valve Spring Diameter: Single spring with damper 1.625" (41mm)
• Spring Installed Height: 2.08" @ 100lbs
• Maximum Valve Lift: 0.850" @ 275lbs
• Rocker Stud Diameter: 7/16"
• Pushrod Diameter: 3/8" (width of slot in guide plate)
• Spark Plug Style: Straight
• Max RPM: 7400-7600

Flow Chart cfm @ H2O

 .200" .300" .400" .500" .600" .700" .800"

• 2.25 Intake: 167 - 246 - 311 - 351 - 380 - 385 - 385
• 1.88 Exhaust: 142 - 183 - 236 - 270 - 294 - 310 - 313