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| Edelbrock Specifications | |
| Combustion Chamber | 68cc |
| Intake Runner Volume | 215cc |
| Exhaust Runner Volume | 130cc |
| Intake Valve | 2.125-inch |
| Exhaust Valve | 1.750-inch |
| Deck Thickness | 5/8-inch |
| Valve Spring | 1.550-inch O.D.
Up to .600" lift |
| Rocker Stud / Guideplate | 3/8" / Hardened Steel |
| Sparkplug | 14mm x 3/4", gasket seat |
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Part # | Description |
E60049 | Complete; fully assembled with parts. Ready to install out-of-the-box. |
E60039 | Bare; requires valves, valve springs, retainers and locks. Requires finish valve job and sizing of valve guides. |
Technical Notes: Sold individually. Requires the use of hardened push rods. Designed to be used with adjustable rockers; typical small-block Chevy rocker arms are widely accessible and recommended.
Edelbrock Flow Data tested @ 28" H20 (rated in CFM)
| Valve Lift | .100" | .200" | .300" | .400" | .500" | .600" |
| Intake | 68 | 127 | 190 | 241 | 274 | 273 |
| Exhaust | 58 | 108 | 150 | 173 | 173 | 190 |
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| Edelbrock Performance Results |
| Peak HP: | 481 @ 5500 RPM | |
| Peak Torque: | 541 @ 4000 RPM | |
| CID: | 462 (+.030 455cid) | |
| Bore x Stroke: | 4.342" x 3.900" | |
| Compression Ratio: | 10.0:1 | |
| Camshaft: | | |
| Lift: | .500" / .500" | |
| Duration @ .050: | 242° / 250° | |
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Engine RPM | Corrected HP | Corr. Torque |
2500 | 221.7 | 465.7 |
3000 | 271.0 | 474.4 |
3500 | 327.2 | 491.0 |
4000 | 412.3 | 541.3 |
4500 | 446.9 | 521.6 |
5000 | 464.9 | 488.3 |
5500 | 481.2 | 459.5 |
6000 | 459.3 | 402.0 |
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EDELBROCK BUICK CYL. HEAD ACCESSORIES:
Edelbrock heads require several nonstandard Buick parts such as :
Rocker Arms-
xxx GHP-3460 1.6 ratio Stamped steel rocker arm kit.
xxx GHP-3461 1.6 ratio Aluminum roller tip rocker arm kit.
xxx GHP-3462 1.6 ratio Stainless steel roller tip rocker arm kit. xxx
Pushrods- 3/8" diameter guideplate compatible pushrods required, approximate length is 9.650".
xxx GHP Strongly recommends delaying the purchase of pushrods until after determining proper pushrod length for your engine.
xxx Use a pushrod length checking tool to determine actual required length.
xxx GHP-3520 Pushrod length checking tool. Easy to use, graduated tool allows use with out need for expensive dial caliper.
xxx GHP has custom length pushrods available.
xxx Detailed instructions on determining correct pushrod geometry.
Intake manifold mounting bolts- Edelbrock heads do not accept stock 455 intake manifold bolts.
GHP-5300 Flanged head grade-8 bolt Edelbrock intake manifold bolt kit.
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