PAIR ASSEMBLED BBC CHEVY ALUMINIUM CYLINDER HEADS 335cc / 118cc HYDRAULIC ROLLER - CHEVY BIG BLOCK
Suit Hydraulic Roller + COMP CAMS SPRINGS
SOLD OUT
Description
DRP DETROIT RACING PRODUCTS
BBC Chevy Big Block Aluminum Performance Cylinder Heads - Sold as a PAIR.
Hand Assembled using DRP Valves and Comp Cams hardware.
- 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" length)
- Exhaust Valve size: 1.880" X 11/32" (Recommend 5.320" 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
- 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
- BOLTS: ARP-135-3703 12 POINT
- Intake Valves to suit:
- Exhaust Valves to suit: "DRP-BBC1880-5.350EXV-8"
- Springs: Comp Cams - 10 Deg retainers
- 115 lbs seat
- 305 lbs open @ 0.550" lift
- Max lift: 0.660" (with 060 to coil bind)
Does not include: Rocker Studs & Guide Plates.
Rocker Studs - we recommend
- DRP-100-7101
- ARP-100-7101
Guide Plates - we recommend Comp Cams
- 4806-8 3/8" Pushrod
- 4820-8 7/16" Pushrod
FLOW FIGURES
| 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-HR |
| Brand | DRP |
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