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#91604071
Speedway Small Block Chevy Vintage Top-End Kit
- 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
$2,134.99
/kit
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$2,166.83
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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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Need To Know
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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
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
Speedway Motors 91604071 Specifications
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
3
1 Review
Ratings & Reviews
3
1 Review
3
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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
Showing 1 of 1 reviews
Questions & Answers
2 Questions • 2 Answers
Questions & Answers
2 Questions • 2 Answers
Can you use a roller cam as long as it doesn't exceed 550 lift
by Amack
• 4 years ago
1 answer
View Answer
Can you use with standard camshaft and push rods, lifters. ? Would I need new pushrods?
by william
• 4 years ago
1 answer
View Answer
2 of 2 questions shown

