Description
DETROIT RACING PRODUCTS – DRP
350 SMALL BLOCK CHEY ASSEMBLED CYLINDER HEADS TO SUIT SOLID FLAT TAPPET CAMSHAFT.
500HP and 460ft/lb of Torque from a 350 Small Block Chev*
*Dyno results are from a 350 Chev with a Solid Flat Tappet.
DRP High Performance Cylinder Heads - Hand assembled inhouse using Comp Cams hardware and DRP Valves (hand built in Melbourne)
- Comp Cams - Springs 985-16 (Dual). 148LBS SEAT AND 349LBS OPEN @ 0.550" LIFT.
- Comp Cams - Retainers, Locks, Spring Seats, Seals
- Max lift: 0.590”
- DRP - 5000 Series valves - Stainless 241-N with a 30° back cut on the intake for improved flow and performance.
Please allow 5 days to assemble the heads. * If you need these sooner, just ask.
- Angle Spark Plug - fits Ram Horn manifolds - see photo.
- High Torque, High velocity inlet runners that flow 500hp @ .450" lift
- 196cc Intake runner volume + 75cc Exhaust
- 64cc Chamber size (these heads can be milled down to 60cc)
- Crisp throttle response.
- Internal Cast Quality + Thick (Super Smooth Water Jackets for maximum flow - see our photos of the internal casting)
- Optimal Spark Plug position. The copies dont have this location.
- Premium Bronze Valve Guides. 0.570" OD
- Guide Seal Size 0.530" x 11/32
- Hard 355-T6 Aluminium - Race Quality.
- Race bred 3 Angle Valve Seats
- Intake Valve size: 2.02"
- Exhaust Valve size: 1.60"
Recommended Spark Plugs: 750 reach gasketed 5/8 hex. NGK-BCPR7ES
Recommended Intake Gaskets: Felpro 1205 std Port or Felpro 1206 for Ported
Recommended Guide Plates: Adjustable: Comp Cams 4835-8 & DRP-4835-8
Valves needed: Intake: 2.020" x 5.011" Long x 11/32" stem. Ferrea F5027
Valves needed: Exhaust: 1.600" x 5.011" long x 11/32" Stem. Ferrea f5025
* Performance Results will vary depending on your build and combination of other items.
This Dyno test was carried out with a Solid Flat Tappet Camshaft,255/256 Duration and 0.540/0.534" valve lift with a 106 LSA. 1 3/4 Headers, Electrical Water pump, Edelbrock Victor Jnr Single plane intake (we feel you will achieve similar results with an air gap dual plane. 11:1 Compression with a domed Piston. 34°
350 CHEVY DYNO RUN - 500HP https://www.youtube.com/watch?v=vpwIgJIN5X8
383 CHEVY DYNO RUN - LOW COMP 95 OCTANE https://www.youtube.com/watch?v=iAEie9M4fz8
These heads flow 500hp @ 0.450" lift
Flow Figures*:
Lift Intake Exhaust
200 145 106
300 192 135
400 232 160
450 242 168
500 242 178
550 242 179
600 244 181
650 244 187
700 245 190
* Flown on a Superflow 600 with a 4.030" Bore and a 30° back cut to the intake valve.
Specifications
SKU | DRP-SBC200-A-SFT |
Brand | DRP |
Unit Of Measure | ea |
Warranty | Manufacturers Warranty |
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