BBC 454 CHEVY Aluminium Cylinder heads. 335cc Runner, 118cc Chamber. PAIR, Big Block Chevy
PERFORMANCE CYLINDER HEADS - Sold as a pair.
Description
DRP DETROIT RACING PRODUCTS
BBC Heads - Sold as a PAIR.
DETAILS:
- Premium Bronze Valve Guides.
- Hard 355-T6 Aluminium - Race Quality.
- 3 Angle Valve Seats
- Intake Valve size: 2.250" X 11/32" (Recommend 5.370"/5.350" length)
- Exhaust Valve size: 1.880" X 11/32" (Recommend 5.320"/5.350" length)
- Combustion chamber size: 118cc
- Intake Port Volume: 335cc
- Intake Port Dimensions: 1.780" W x 2.500" H
- Intake Port Location Stock
- Exhaust Port Volume: 148cc
- Exhaust Port Dimension: 1.900" W x 1.660" H
- Exhaust Port Location .357" Raised
- Combustion Chamber Size(As Cast)
- Valve Angle 24°/4° Int, 15°/4° Exh
- Valve Spring Pocket Diameter 1.750"
- Minimum Bore Diameter 4.550"
- Flat Mill .006" per cc/ Maximum 105cc As Cast
- Angle Mill .009" per cc/Maximum 100cc As Cast
- Valve Spring Installed heights:
- Intake with 5.370" long & 0.250" tip = 1.900" installed height
- Exhaust with 5.320" long & 0.250 tip = 1.900" installed height
- Recommended Spark Plugs: 750 reach gasketed 5/8 hex. NGK-BCPR7ES
- Recommended Intake Gaskets: Felpro 1275 (larger) or Felpro 1252-3
- Recommended Head Bolts:
- BOLTS: ARP-135-3603 6 POINT (GEN 4)
- BOLTS: ARP-135-3703 12 POINT (GEN 4)
- BOLTS: ARP-135-3707 12 POINT (GEN 5)
- STUDS: ARP-235-4713 12 POINT (GEN 4&5)
- Intake Valves to suit: DRP-5190-8 & Ferrea: F6190-8
- Exhaust Valves to suit: DRP-5146-8 & Ferrea: F5146-8 or F6296
| HEADS | DRP-BBC 340 | 335cc | ||||
| CFM Flow @ 28 (inHg) on a 4.310" Bore (454 + 060")* | ||||||
| LIFT | INTAKE | EXHAUST | ||||
| 0.100" | 78 | 73 | ||||
| 0.200" | 142 | 130 | ||||
| 0.300" | 210 | 172 | ||||
| 0.400" | 270 | 208 | ||||
| 0.450" | 300 | 223 | ||||
| 0.500" | 310 | 233 | ||||
| 0.550" | 322 | 241 | ||||
| 0.600" | 331 | 248 | ||||
| 0.650" | 337 | 255 | ||||
| 0.700" | 345 | 263 | ||||
| 0.750" | 346 | 265 | ||||
| *Flowed at Total Performance Vic 7th April 2020 | ||||||
Specifications
| SKU | DRP-BBC340 |
| Brand | DRP |
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