DRP PAIR SBC Small Block Chevy ALUMINIUM Cylinder heads 196cc 23°+64cc Alloy STRAIGHT Plug

PAIR SBC Small Block Chev 350 Cylinder heads by DRP 196cc 23Â°+64cc Alloy STRAIGHT Plug (Bare)

Description

DRP SBC Chevy 350 Cylinder Heads STRAIGHT PLUG

Bare - No Parts

Brand New Pair of genuine DETROIT RACING PRODUCTS Cylinder heads.

Sold as a BARE pair.

*Please note there are copies of these cylinder heads. We offer the Genuine DRP branded heads, look for the machined logo on the end of the heads and the contoured intake port around the valve guide boss. Super nice.

Chev 23° DRP-200A Aluminium Cylinder heads
STRAIGHT Spark Plug
Port Shape, High Torque 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
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 Guide Plates: Comp Cams 4835-8
Valves needed: Intake: 2.020" x 5.011" Long x 11/32" stem. Comp Part 6001-8
Valves needed: Exhaust: 1.600" x 5.011" long x 11/32" Stem. Comp Part 6002-8

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.

We can supply assembled to suit:

Hydraulic Flat Tappet
Solid Flat Tappet
Hydraulic Roller
Using Ferrea Valves and Comp Cams Hardware.
Message us with your cam specifications so we can match the springs.
See our other listing for a Assembled Heads and Valves.

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.

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

*Output will be determined by your combination and quality of the motor 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.