SKU: DRP-BBC340

*PAIR* BBC 454 CHEVY Aluminium Cylinder heads. 335cc Runner, 118cc Chamber Big Block Chevy Bare

PERFORMANCE CYLINDER HEADS - Sold as a pair.

$1,474.00

or 4 payments of $368.50 with Info

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*FREE SHIPPING ON ORDERS OVER $200!


Description

DRP DETROIT RACING PRODUCTS - Big Block Chevy Cylinder Heads

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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