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Performer RPM E-Tec 170
Edelbrock E-Tec heads are replacements for 302, 327, 350 & 400 c.i.d. S/B Chevy engines with "Vortec-style" manifolds. They feature an LT1-style raised runner intake port design for increased air-flow and ultimate performance. A unique combustion chamber design positions the spark plug closer to the center of the cylinder, promoting a more efficient combustion resulting in more power. These heads include an adjustable rocker stud and guide plate set-up for use with adjustable rockers or washers to properly position the stud height to accommodate factory style self-aligning rocker arms. They have 20% more exhaust flow than cast iron Vortec heads, great performance up to 6000 rpm and can produce 9.5:1 compression with stock pistons in 350 cubic-inch engines. RPM E-Tec heads are dual-drilled and will accept 1987-95 centerbolt and/or 1986 & prior perimeter flange mount valve covers and most stock exhaust manifolds. E-Tec 170 heads are 50-state street legal.
Cylinder Head Specifications |
| Combustion chamber volume |
64cc |
| Intake runner volume |
170cc |
| Exhaust runner volume |
70cc |
| Intake valve diameter |
1.94" |
| Exhaust valve diameter |
1.55" |
| Valve stem diameter |
11/32" |
| Valve guides |
Manganese bronze |
| Deck thickness |
5/8" |
| 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 |
Stock |
| 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 on pages 126-128. 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. To use stock rockers on S/B Chevy heads, .100" longer than stock pushrods are required. Edelbrock pushrods #9629 are recommended. Use Head Bolt Kits on page 164 for easy installation. S/B Chevy heads may not be used on engines with less than 4" bore (262, 265, 283, 305, 307 c.i.d.) except with cams having less than .450" valve lift. |
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| Description |
Bare (Single) |
Complete (Single)
Satin |
Complete (Single)
Polished |
| Performer RPM E-TEC 170 (with springs for mechanical flat tappet & hydraulic roller cams) |
60959 |
60975 |
N/A |
| Performer RPM E-TEC 170 (with springs for hydraulic flat tappet cams) |
60959 |
60979 |
609719 |
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Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
| #60979 |
| Valve Lift |
.100" |
.200" |
.300" |
.400" |
.500" |
.600" |
.700" |
| Intake |
64 |
130 |
186 |
220 |
232 |
238 |
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| Exhaust |
54 |
104 |
140 |
169 |
183 |
190 |
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AMC
Small Block
