700 HP, Assembled High RPM Springs, LS3 L92 RECTANGLE PORT 6 BOLT CYLINDER HEADS LS7, 11 deg, *PAIR* 0.670" LIFT

DRP - Detroit Racing Products 6 Bolt High Performance LS3 Cylinder Heads.

6 BOLT Rectangle Port LS3 Cylinder Heads - Pair of Assembled Heads. 

700 HP! Assembled with PAC Dual Valve Springs & Comp Cams Retainers.

LS3 - L92 style Cylinder Heads - 6 BOLT + 11° valve angle. 

Has LS7 Valve Spacing for increased flow & Performance. 

DRP’s LS3 6 Bolt & 4 Bolt cylinder heads offer a cylinder head with improved port and combustion chamber designs that result in “Bolt on Horsepower”! Flows 700 HP and more!

Cylinder Heads play such a critical role in your engine and performance cylinder heads usually come at a significant cost. The DRP range of Cylinder heads are easy on the budget while delivering on performance, precision and quality. The DRP “as-cast” ports and chambers perform out of the box.

Details:

Guides: Premium Bronze Valve Guides.

Material:  Hard 356 Aluminium -  Race Quality.

Valve Seats:  3 Angle Valve Seats 

Intake Port Volume:    262cc

Exhaust port Volume:  100cc

Chamber size:  70cc

Intake Valve size:  2.165" x 5.450" long, Install Height 1.800" 

Exhaust Valve size: 1.590"/1.600" x 5.450" long, Install Height 1.800"

Valve Springs:   DRP PROLINE BY PAC - Dual Polished Springs. 

Valve Spring Specs: 415lbs/inch rate and 160lbs @ installed height. Suits Hydrauic Roller

Maximum Lift: 0.720" With .060" safety to coil bind. 

Valve Train:   Comp Cams Retainers & Machined Race Locks

Valve Angle:                    11°

Min bore dia:                   4.060"

Recommended Bore dia:     4.125"

Intake port location: stock

Exhaust port location: stock

Quantity Sold:  Pair (2 Assembled cylinder heads)

Flow Figures: 4.000" Bore @28"

Lift          Intake   Exhaust     

0.200       129       106

0.300       198       148

0.400       258       180

0.500       301       201

0.550       313       207

0.600       325       213   670 HP

0.650       331       214   681 HP

0.700       339       217   700 HP

0.750       346       218   713 HP

Parts required:

Rockers you can use: 

• LS7 rockers @ 1.8 ratio and LS7 offset
• LS3 Rockers with DRP Offset Rocker Stands.

Rocker Stands:  Part# DRP-LS7-STANDS

*Photos are of ACTUAL cylinder heads with standard steel retainers.