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Product Summary

Aluminum, 4-Barrel Square Bore Carburetor Flange Type

  • The kit delivers improved performance in street applications from 1,500 to 6,500 rpm range.
  • This kit includes an RPM intake manifold, Performer RPM cylinder heads, hydraulic cam and lifters, timing chain complete bolt kits and an Edelbrock gasket set.
  • To get great performance out of any engine, all of the components must work together.
  • For over 30 years, the Edelbrock Total Power Package system has solved the parts matching puzzle for many street performance enthusiasts.
  • With the introduction our Power Package Top End Kits, now you can get the best Edelbrock performance in-one-box, under one part number with "no guesswork" involved.
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Key Specs

MFG. Part #2058
BrandEdelbrock
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Need To Know

Quick and Easy Returns

Return Policy

Edelbrock 2058 Details

Edelbrock part #2058 Performer RPM Top End Kit is designed for 1965-76 Big-Block Oldsmobile 400-500 c.i.d. V-8 engines. This Top End Kit produced 450 HP & 541 TQ on a 455 c.i.d engine with 9.5:1 compression.

  • The kit delivers improved performance in street applications from 1,500 to 6,500 rpm range.
  • This kit includes an RPM intake manifold, Performer RPM cylinder heads, hydraulic cam and lifters, timing chain complete bolt kits and an Edelbrock gasket set.
  • To get great performance out of any engine, all of the components must work together.
  • For over 30 years, the Edelbrock Total Power Package system has solved the parts matching puzzle for many street performance enthusiasts.
  • With the introduction our Power Package Top End Kits, now you can get the best Edelbrock performance in-one-box, under one part number with "no guesswork" involved.

CARB Warning

Follow EPA, CARB, and state regulations for engine changes

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine

Edelbrock 2058 Specifications

KEY SPECS
MFG. Part #2058
BrandEdelbrock
GENERAL
Material TypeAluminum
Carburetor Flange Type4-Barrel Square Bore
Gasket(s) IncludedYes
Cylinder Head StyleAssembled
Combustion Chamber Volume77cc
Intake Valve Diameter2.072"
Exhaust Valve Diameter1.68"
Rocker Arms IncludedNo
Pushrods IncludedNo
Camshaft IncludedYes
Intake Manifold IncludedYes
Fuel Delivery StyleCarbureted
Intake StyleDual Plane
Timing Chain and Gears IncludedYes
Lifters IncludedYes
CNC-Machined Combustion ChamberNo
Intake Port LocationStandard
Intake Port ShapeRectangle
Exhaust Port LocationStandard
Exhaust Port ShapeSquare
Spark Plug StyleAngle
Intake Valves IncludedYes
Exhaust Valves IncludedYes
Valve Spring IncludedYes
Outside Diameter of Outer Spring1.46"
Damper Spring IncludedYes
Number of Springs Per ValveSingle
Retainer MaterialSteel
Retainers IncludedYes
Locks IncludedYes
Lock Style7 Degree
Valve Stem Seal MaterialViton
Valve Stem Seal TypePositive Stop
Rocker Arm Nuts IncludedNo
Rocker Arm Studs IncludedYes
Guideplates IncludedYes
Valve Covers IncludedNo
Guideplate Pushrod Size0.375"
Accessory Bolt Holes DrilledYes
Valve Guide MaterialManganese Bronze
Valve Seats MachinedYes
Valve Cover Mounting StylePerimeter Bolt
Valve Seat Machine Style3-angle
Steam Holes DrilledNo
Valve Seat MaterialDuctile Iron
Machined for O-RingNo
Heat CrossoverNo
Oiling StyleThrough Pushrod
Intake FinishNatural
Intake MaterialAluminum
Camshaft TypeHydraulic Flat Tappet
Exhaust Duration (.050" Lift)234
Intake Duration (.050" Lift)224
Intake Valve Lift w/ Rocker Arm Ratio0.496"
Exhaust Valve Lift w/ Rocker Arm Ratio0.52"
Intake Runner Volume188cc
Valve Guides IncludedYes
Advertised Intake Duration290
Advertised Exhaust Duration300
Valve Stem Seals IncludedYes
Exhaust Runner Volume106cc
NotesAftermarket 7/16 stud rocker arms and 3/8 hardened pushrods required. Head bolt holes drilled for stock 7/16 bolts.
GTIN Code085347020584
Sold in QuantityKit
ColorNatural
CNC-Machined RunnersNo

Fitment

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

  • 455 Oldsmobile Big-Block V8

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