Speedway Small Block Chevy Vintage Top-End Kit

#91604071

Speedway Small Block Chevy Vintage Top-End Kit

Name: Speedway Small Block Chevy Vintage Top-End Kit
Brand: Speedway Motors
SKU: 91604071
Price: 2134.99 USD
Availability: BackOrder
Rating: 3 (1 reviews)

1 Review

2 Questions

No accessory bolt holes, just like the original heads
Aluminum heads shave 40 lbs. off the nose of your car vs. iron heads
Cast aluminum valve covers

Type:

Cylinder Head (Pair) Top End Kit

Cylinder Head - CompleteCylinder Head - Bare

$2,134.99

/kit

On Backorder

$2,166.83

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This part is Backordered. We estimate this item will ship on or before December 1st.

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Product Summary

4-Barrel Spread Bore Carburetor Flange Type

No accessory bolt holes, just like the original heads
Aluminum heads shave 40 lbs. off the nose of your car vs. iron heads
Cast aluminum valve covers
Dual-plane manifold
Runner design "tuned" for peak torque around 3500 rpm

Comes as a Kit

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Key Specs

MFG. Part #	91604071
Brand	Speedway Motors

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Need To Know

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855.313.9176

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Installation Details

Engine Top End Kits Installation Instructions (91604071)

Intake Manifolds Installation Instructions (3252703)

Installation Tips

910-3782462 Chevy SBC Assembled Aluminum Camel Double Hump 461 Cylinder Head

Stock stamped steel rocker arms will not clear 1.437” diameter valve springs on these heads. Must use aftermarket roller tip or full roller rocker arms if using large diameter springs. We recommend 57533501or 57523501. Heads feature valve cover rails that are raised 3/8” so you can use roller rockers with original '59-up Corvette valve covers (note - some factory A/C brackets may have interference issues). Rocker arm studs should be torqued to 45 ft.-lbs.
Intake port measures 2-1/16” x 1-1/8” which works with Fel-Pro 1205 style gaskets. Exhaust ports are square and work with Fel-Pro 1404 style gaskets.
Champion 271RC12YC style spark plugs (14mm thread, 5/8" hex, flat gasket seat, .750" reach) are what we recommend as a starting point. This is a straight plug head (not angled plug). Ignition timing should be between 35 to 38 degrees total. Set the timing with the vacuum advance hose disconnected and rev the engine up until the mechanical advance is fully in, then set it at 35 degrees to start with. You can experiment with more timing later to see if the engine runs better at closer to 38 degrees, but we don't recommend exceeding 38 degrees on most applications.
Valve guides are machined for modern positive stop stem seals. Measures .540” OD where the seal is pressed on.
Heads are not drilled for steam holes that are required on SBC 400 engines.
Recommend head gasket for 4” bore engines is the Fel-Pro 1003 style gasket.
Head bolts such as 50542171 and washers 50542102 are recommended. Torque to 50-65-80 ft.-lbs., with 75 ft.lbs. torque on the bottom. Use Permatex 80631 style sealant on the threads.
If wanting to run power steering, you would need to utilize the Corvette-style "Ram Horn" Exhaust Manifolds 9300328, along with both 91603050 and 91067850 to mount the generator/alternator up on the driver's side. Then you might be able to use a lower power steering pump bracket such as 91332902 or 91033727, depending on your pump and frame/steering box clearance, to mount the P/S pump low on the driver's side.
The valve covers do not clear full roller rockers

325-2703 Edelbrock 2703 Performer EPS Chevy Intake Manifold

Match with a dependable Edelbrock square-bore carburetor for maximum STREET performance gains.
Edelbrock reccommends a 500-650 CFM model.

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Speedway Motors 91604071 Details

Speedway Motors new top end kit has everything you need for your small block Chevy to give it the vintage look. Aluminum Heads, Aluminum Edelbrock Intake, Chevrolet script valve covers, gaskets, and hardware.

Kit Includes

(1) Edelbrock 2703 Performer EPS Chevy Intake Manifold
(2) Speedway Assembled Aluminum Double Hump Cylinder Heads
(1) Finned Small Block Chevrolet Cast Valve Covers, Pair
(1) Mr Gasket 6080MRG Super Intake Manifold Bolt Kit
(1) Speedway Steel Core Valve Cover Gaskets, Pair
(2) Fel-Pro 1094 S/B Chevy 265-350 Head Gasket
(1) Small Block Chevy Intake Gasket Set

Features:

910-3782462 Chevy SBC Assembled Aluminum Camel Double Hump 461 Cylinder Head

Visually similar to the 461 heads (GM # 3782461) which first appeared on the 1961 Corvette “fuelie”
No accessory bolt holes, just like the original heads
Aluminum heads shave 40 lbs. off the nose of your car vs. iron heads
Improved port/chamber shape for better performance and efficiency
Standard port location for use with most intake and exhaust manifolds
Designed for 1962-86 small block engines (302/327/350)

325-2703 Edelbrock 2703 Performer EPS Chevy Intake Manifold

Dual-plane manifold
Runner design "tuned" for peak torque around 3500 rpm
Power from off-idle to 5500 rpm
Dyno gains of 5 hp and 9 ft/lbs of torque on 350 Chevy
3000 to 4500 rpm increased average 5+ ft/lbs
Includes oil fill tube and push-in breather cap

572-1004 Finned 1960-86 Small Block Chevrolet Valve Covers

Cast aluminum valve covers
'Finned' design along with the Chevrolet script logo
Does not included oil fill or pcv holes

910-10207 Speedway Small Block Chevy Intake Gasket Set, 1205 Style

1205 style, 1.28" x 2.09" Stock/Small Race
No end seals - use silicone gasket maker
Heat crossover port is blocked

344-1094 Fel-Pro 1094 S/B Chevy 265-350 Head Gasket

Superior heat dissipation
Multi-layer steel gaskets
Leakproof seal Perma Torque MLS
4.100" bore, .015" thick, 3.2 cc volume

910-17001 Speedway Small Block Chevy Steel Core Valve Cover Gaskets

Stainless steel frame sandwiched between neoprene rubber
Steel core improves seal
Reusable
.175" thick
Fits 1960-86 small block Chevy style heads (4 perimeter bolts)

550-6080MRG Mr Gasket 6080MRG Super Intake Manifold Bolt Kit

Grade 5 hex head bolts
Black coated plated
Hardened flat washers

Application

The fully assembled heads are ready to run and are a great match to flat tappet camshafts. They're compatible with solid (mechanical) flat tappet or hydraulic flat tappet cams with up to .550” lift. The valve springs (single with flat wire inner damper) have a seat pressure of 120 lbs. Valves are +.100" long and must be used in conjunction with aftermarket aluminum roller rocker arms to clear valve springs used which are 1.46" diameter. The valve springs have 120 lbs. @ 1.800" installed height and 290 lbs. of open pressure at 1.20” (coil bind is at 1.160”). Pair with a vintage Duntov or 30-30 grind (or aftermarket equivalent) for a true nostalgic ‘60s experience.

Charts

325-2703 Instructions (PDF)

Gasket Cut Away Illustration (GIF)

Head Gasket Application (JPEG)

Speedy Tip for Proper Head Gasket Seal (GIF)

Specs

Chevy SBC Assembled Aluminum Camel Double Hump 461 Cylinder Head

180cc intake port volume (factory 461 casting was 160cc)
62cc exhaust port volume
64cc fast-burn combustion chambers deliver big power gains vs. 461 castings
2.02” intake/1.60” exhaust valves (most 461 castings were 1.94/1.50)
3-angle valve job promotes better flow, especially at low-to-mid lifts
Swirl polished & undercut stainless steel valves
Intake flows 232 CFM @ .500” lift
Exhaust flows 173 CFM @ .500” lift
Accepts both perimeter and center bolt valve covers
Single 1.46” diameter valve springs w/ inner damper
Suitable for flat tappet camshafts up to .550” lift
7 degree lightweight chromoly retainers and keepers
Hardened steel spring cups for durability
High nickel valve seats provide optimum heat transfer and wear characteristics
Manganese bronze valve guides reduce friction
Viton positive valve seals are a modern upgrade from stock 461 castings
2-piece hardened steel pushrod guide plates for use with hardened pushrods
3/8” chromoly screw-in rocker arm studs included
Blocked exhaust heat riser manifold crossover port
3/8” NPT coolant temperature probe port

325-2703 Edelbrock 2703 Performer EPS Chevy Intake Manifold

Port exit dimensions: 1.15" x 1.87"
Carb pad height: 4.27"

344-1094 Fel-Pro 1094 S/B Chevy 265-350 Head Gasket

Embossed shim
4.100" gasket bore
Nominal compression thickness: .015"
Compressed volume: 3.2 cc
Not for use with small block 400. Extra thin to increase compression.

Guides & Documents

Engine Top End Kits Installation Instructions (91604071)

Engine Top End Kits Technical Information (91604071)

Intake Manifolds Installation Instructions (3252703)

Cylinder Heads Technical Information (9103782462)

Cylinder Head Gaskets Technical Information (3441094)

Speedway Motors 91604071 Specifications

KEY SPECS
MFG. Part #	91604071
Brand	Speedway Motors

GENERAL
Carburetor Flange Type	4-Barrel Spread Bore
Gasket(s) Included	Yes
Cylinder Head Style	Assembled
Combustion Chamber Volume	64cc
Intake Valve Diameter	2.02"
Exhaust Valve Diameter	1.6"
Rocker Arms Included	No
Pushrods Included	No
Camshaft Included	No
Intake Manifold Included	Yes
Fuel Delivery Style	Carbureted
Intake Style	Dual Plane
Timing Chain and Gears Included	No
Lifters Included	No
Cylinder Head Material	Aluminum
CNC-Machined Combustion Chamber	No
Intake Port Location	Standard
Intake Port Shape	Rectangle
Exhaust Port Location	Standard
Exhaust Port Shape	Square
Spark Plug Style	Straight
Intake Valves Included	Yes
Exhaust Valves Included	Yes
Valve Spring Included	Yes
Outside Diameter of Outer Spring	1.46"
Damper Spring Included	Yes
Number of Springs Per Valve	Single
Retainer Material	Chromoly Steel
Retainers Included	Yes
Locks Included	Yes
Lock Style	7 Degree
Valve Stem Seal Material	Viton Rubber
Valve Stem Seal Type	Positive Stop
Rocker Arm Nuts Included	No
Rocker Arm Studs Included	Yes
Guideplates Included	Yes
Valve Covers Included	Yes
Guideplate Pushrod Size	0.3125"
Accessory Bolt Holes Drilled	No
Valve Guide Material	Manganese Bronze
Valve Seats Machined	Yes
Valve Cover Mounting Style	Center and Perimeter Bolt
Valve Seat Machine Style	3-angle
Steam Holes Drilled	No
Valve Seat Material	Powdered Metal
Machined for O-Ring	No
Heat Crossover	No
Cylinder Head Bolts Included	No
Oiling Style	Through Pushrod
Cylinder Heads Included	Yes
Head Gaskets Included	Yes
Carburetor Quantity	One
RPM Range	Idle-5,500
Intake Finish	Natural
Intake Material	Aluminum
Intake Manifold Fasteners Included	Yes
Intake Runner Volume	180cc
Valve Guides Included	Yes
Intake Gaskets Included	Yes
Valve Stem Seals Included	Yes
Exhaust Runner Volume	62cc
Sold in Quantity	Kit
CNC-Machined Runners	No

Ratings & Reviews

1 Review

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not the valve covers!

3.0

3 years ago

Jimpanzer

Fremont CA

heads and intake are good but valve covers will interfere with some roller rockers causing valves to hit the pistons, Speedway unaware of this and said they could do nothing about engine damage,

Would Not Recommend

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Questions & Answers

2 Questions • 2 Answers

Sort Questions

Can you use a roller cam as long as it doesn't exceed 550 lift

by Amack

• 4 years ago

1 answer

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Can you use with standard camshaft and push rods, lifters. ? Would I need new pushrods?

by william

• 4 years ago

1 answer

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2 of 2 questions shown