DRP PAIR SBC Small Block Chevy Cylinder heads by DRP 196cc 23Â° 64cc Alloy Angle Plug BARE

*PAIR* 500HP+ Small Block Chevy 350 Cylinder heads 196cc 23 deg 64cc Alloy Angle Plug Bare Pair - SBC 350, 383, 400

Description

DRP - DETROIT RACING PRODUCTS Cylinder heads.

Small Block Chevy Cylinder heads, 195cc, Angle Plug

Sold as a BARE pair.

Chev 23° DRP-200A Aluminium Cylinder heads
Angle Spark Plug - fits Ram Horn manifolds - see photo.
High Torque/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
Use Valve Stem Steals: Comp Viton: 518-16 Teflon: 503-16
Guide Seal Size 0.530" x 11/32
Hard 355-T6 Aluminium - Race Quality.
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 Adjustable Guide Plates: Comp Cams 4835-8 & DRP-4835-8
Valves needed: Intake: 2.020" x 5.011" Long x 11/32" stem.
Valves needed: Exhaust: 1.600" x 5.011" long x 11/32" Stem.
Intake Valves: Ferrea F5027-8 & DRP-5027-8
Exhaust Valves: Ferrea F5025-8 & DRP-5025-8
Temp Sender Size: 3/8" NPT

These heads flow 530hp @ 0.550" lift

Flow Figures*:

Lift Intake Exhaust

200 145 106

300 192 135

400 232 160

450 242 168 503hp

500 250 178

550 257 179 530hp

600 261 181 537hp

650 260 187

700 255 190

* Flown on a Superflow 600 with a 4.030" Bore and a 30° back cut to the intake valve.

Youtube:

350 CHEV DYNO RUN - 500HP https://www.youtube.com/watch?v=vpwIgJIN5X8

383 CHEV DYNO RUN - LOW COMP 95 OCTANE https://www.youtube.com/watch?v=iAEie9M4fz8

Customer Combinations:

500HP: We have dyno run these heads (out of the box) on a 350 Chev, 750dp carb, Edelbrock VJ, Long tube headers, our custom solid flat tappet Cam in the 250° range and produced an excellent 500HP and 470ft/lbs of Torque! Watch our post on facebook OR Youtube and see the Dyno Sheet in the photos.

10.6 Second HK 4 Door: Street Trim, 383 Cubes @ 11.5:1 compression. Victor Jnr manifold and a 750 cfm carb. Camshaft is a Total Performance custom solid roller.

*Output will be determined by your combination and quality of the engine build. We can assemble using Ferrea Valves and Comp Cams Hardware.

Exceptional Quality for a Wow factor of a price!

*See the photo of the internal cast quality. We cut a cylinder head in half to verify the thickness and quality. These castings are exceptional quality.

These Cylinder heads flow and work like you wont believe. Best Bang for your Buck!

Dont waste your time or money on rebuilding old Cast Iron units - upgrade now. Forget the headaches, poor valve seats and crack testing woes.

We do offer Complete assemblies, valves, springs, retainers to suit your application, see our other listings for various assemblies to suit your camshaft. We have 4 Stages - 1 through to 4. We use Stainless Steel Valves and Comp Cams hardware.