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E-CNC 185 For Small-Block Chevy
E-CNC 185 cylinder heads for small-block Chevy feature fully CNC'd intake ports, combustion chambers and exhaust ports for improved performance. This all new design delivers optimal air-flow for maximum
horsepower and torque in high performance street and light duty racing applications. These cylinder heads maintain the stock 23° valve angle and the intake flange is drilled to accept 1986 and earlier intake manifold designs. Match with any one of Edelbrock's Performer RPM, RPM Air-Gap or Victor Jr. intake manifolds and camshafts for a dyno-proven performance combination.
Cylinder Head Specifications |
| Combustion chamber volume |
64cc |
| Intake runner volume |
185cc |
| Exhaust runner volume |
75cc |
| Intake valve diameter |
2.02" |
| Exhaust valve diameter |
1.60" |
| Valve stem diameter |
N/A |
| Valve guides |
|
| Deck thickness |
9/16" |
| Valve spring diameter |
1.46" |
| Valve spring maximum lift |
0.575" |
| Rocker stud |
3/8" |
| Guideplate |
Hardened steel |
| Pushrod diameter |
5/16" |
| Valve angle |
23° |
| Exhaust port location |
N/A |
| Spark plug fitment |
14mm x 3/4 reach, gasket seat |
| Made In |
USA |
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Technical Notes: Match with Edelbrock head gasket sets. Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. |
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| Description |
Bare (Single) |
Complete (Single)
Satin |
Complete (Single)
Polished |
| E-CNC 185 for Small-block Chevy (with springs for mechanical flat tappet & hydraulic roller cams) |
79889* |
79895* |
609815* |
| E-CNC 185 for Small-block Chevy (with springs for hydraulic flat tappet cams) |
79889* |
79899* |
N/A |
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Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
| #79899 |
| Valve Lift |
.100" |
.200" |
.300" |
.400" |
.500" |
.600" |
.700" |
| Intake |
61 |
129 |
186 |
231 |
250 |
254 |
253 |
| Exhaust |
53 |
106 |
147 |
185 |
199 |
203 |
209 |
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AMC
Small Block
