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Flo-Tek 102505 Assembled S/B Chevy Aluminum Heads, Straight Plug

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Specs
Material Type:
Aluminum
Sold in Quantity:
Each
Finish:
Natural
Port Style:
Square Port
Stud Diameter:
.38
Intake Runners:
180 cc
Exhaust Runners:
62 cc
Cylinder Head Style:
Assembled
Spark Plug Style:
Straight
Spring Diameter:
1.45
Garage Sale:
No
Notes
Uses dual springs. Center to centers for passenger side are 4.80" and 5.45". Driver's side is 1.98" and 3.63"

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What's in the Box

You don't sacrifice quality for a low price - get both with a set of Flo-Tek aluminum cylinder heads. These Chevy aluminum heads are loaded with high end features like bronze valve guides, multi angle valve job, and 3/8" screw-in rocker studs with guideplates. These are a pre-1986 design small block Chevy cylinder head with a standard exhaust port design.

Heads are sold each.

  • 180cc intake runners
  • 62cc exhaust runners
  • 64cc combustion chambers
  • 2.02" and 1.60" stainless steel valves
  • High performance springs for .550" lift
  • Compatible with most flat tappet camshafts
  • Five angle valve job
  • Bronze guides
  • Straight plug
  • 3/8" screw-in studs and guide plates
  • Port for temperature probe
  • Works well with most flat tappet street cams

Flow Numbers:

  • Valve Lift     .400"     .500"     .600"
  • Intake           206       237       244   
  • Exhaust        165       177       187

Notes

Assembled heads have single valve springs (with flat wire inner damper) with a seat pressure of 115 lbs. For use with solid (mechanical) flat tappet or hydraulic flat tappet cams.

Manufacturer's Suggestions:

  • 271C57YC spark plugs (14mm thread, 5/8" hex, flat gasket, .750" reach)
  • Fel-Pro 1034 or 1010 head gaskets
  • Torque head bolts in 3 stages
    • Upper bolt torque: 50 lbs, 65 lbs, then 80 lbs.
    • Lower bolt torque: 50 lbs, 65 lbs, then 75 lbs.

Our Techs Recommend:

  • Rocker Arms:  57533501 or 57523501
  • Cam and Lifter Kits:  282122102 or 282122112 (for mild street use and hot rod sound without having to use a higher stall converter for an automatic transmission)

Note: The heads will accept even our most radical street cams such as number 282122144 but other requirements will need to be addressed along with this cam choice.

Note: The FelPro 1205 gasket works best with this head. If using a 1204 you will need to do a little trimming around the ports.

 

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Dart Aluminum Pro 1 Chevy Cylinder Heads, 64cc, Angle Plugs
                        

Dart's highly popular small-block Pro1 heads are loaded with features, which is why they are among the best 23° aluminum heads on the market. Highly efficient chambers feature excellent fuel distribution while the five-angle intake seats shear the liquid fuel and air as it enters the chamber. Spark plugs are located high and and as close to the center of the chamber as possible for a complete burn.

The 180cc and 75cc ports feed 2.02" intake and 1.60" exhaust valves using 1.25" diameter springs that can handle up to .520" lift. For gaskets use Felpro 1205 (Speedway 344-1205) on the intake and 1404 (Speedway 344-1404) on the exhaust. A good starting point for plugs is a AR3934 Autolite (at right).

  • Flows a streetable 257 cfm intake/172 cfm exhaust @ .500" lift
  • Best suited for engines making 400-500 horsepower
  • Cast from 355T6 aluminum alloy
  • Stainless Steel valves
  • Five-angle hardened valve seats 
  • Accepts standard intake and exhaust manifolds or headers
  • 1.25" Comp Single Valve Springs w/ 7° steel retainers (.520" max lift)
  • Includes rocker studs & guide plates
  • Ready to install

304-1111 Instructions (PDF)

Flo-Tek 101505 Assembled Small Block Chevy Aluminum Heads, Angle Plug
                        

You don't sacrifice quality for a low price - get both with a set of Flo-Tek aluminum cylinder heads. These Chevy aluminum heads are loaded with high end features like bronze valve guides, Multi angle valve job, and 3/8" screw-in rocker studs with guideplates. These are a pre-1986 design small block Chevy cylinder head.

Heads are sold each.

  • 180cc intake runners
  • 62cc exhaust runners
  • 64cc combustion chambers
  • 2.02" and 1.60" stainless steel valves
  • High performance springs for .550" lift
  • Compatible with most flat tappet camshafts
  • Multi angle valve job
  • Bronze guides
  • 3/8" screw-in studs and guide plates
Flo-Tek 102500 Bare Small Block Chevy Aluminum Heads, Straight Plug
                        

You don't sacrifice quality for a low price - get both with a set of Flo-Tek aluminum cylinder heads. These Chevy aluminum heads are loaded with high end features like bronze valve guides and a multi angle valve job. These are a pre-1986 design small block Chevy cylinder head. Sold each.

  • 180cc intake runners
  • 62cc exhaust runners
  • 64cc combustion chambers
  • Machined for 3/8" screw-in studs
  • Machined for 2.02"/1.60" valves
  • Ready for assembly
BluePrint Engines H8002S Small Block Chevy Aluminum Head
                        
  • 195cc intake runners
  • 75cc exhaust runners
  • 2.02” and 1.60” stainless steel valves
  • Ultra street performance 1.437” springs for up to .575” lift
  • 115-125 lb seat pressure
  • 295-305 lb open pressure
  • 3⁄8”screw in studs and guideplates
  • Great for hydraulic roller or large flat tappet street cams
  • Straight plug
  • 64cc combustion chamber
  • 3-angle valve job
  • Manganese bronze guides
  • Same head as featured on our exclusive BluePrint 383 Roller
Fel-Pro Gaskets 1206 S/B Chevy Intake Manifold Gaskets, 1.34x2.21 Inch
                        Fel-Pro Blue Stripe premium quality intake manifold gaskets for Small Block Chevy (SBC).
                    
Edelbrock 7501 Performer RPM Air-Gap Small Block Chevy Intake Manifold
                        

Designed for 1955-86 262-400 c.i.d. Chevrolet V8s, the award-winning RPM Air-Gap incorporates the same race-winning technology that's used on the Victor Series competition intakes. The air-gap design features an open air space that separates the runners from the hot engine oil resulting in a cooler, denser charge for more power.

Manifold features rear water outlets, two distributor clamp locations and nitrous bosses. Accepts all 1976 and later alternator and A/C brackets for the street. The heater outlet boss is angled for proper fit over the valve cover. The temp sensor boss clears all waternecks.

  • For square-bore carburetors only
  • No provision for exhaust-heated chokes and no exhaust crossover
  • Not for 1987 and later cast iron heads
  • Will not fit under stock Corvette hood

325-7501 Instructions (PDF)

Fel-Pro P1010 S/B Chevy 265-400 Copper Ring Head Gasket 4.166 In. Bore
                        

These Fel-Pro gaskets work with both cast iron and aluminum heads. Pre-flattened steel wire ring gaskets have the strength of steel wire sealing with minimum brinelling of aluminum heads. Pre-flattened copper wire ring gaskets will not brinell aluminum heads. They offer superior heat dissipation. Multi-layer steel gaskets offer current leading-edge technology and provide a long-term, leakproof seal called Perma Torque MLS.

  • Gaskets are sold each
  • Pre-flattened copper wire
  • Nominal compression thickness: .039"
  • Compressed volume: 8.9 cc
  • Recommended for '86-'91 Corvette aluminum heads. Max 4.155" bore.
  • 4.166" bore gaskets can be used on 400 race engines with up to 4.155" max bore with minimal chamfer.
  • When using aluminum heads, we recommend gaskets with soft copper wire rings (such as 344-1010). This ensures that the aluminum head is not "scarred" by the combustion seal. Shim style 344-1094 will also work well with aluminum heads.

Head Gasket Application (JPEG)

Speedy Tip for Proper Head Gasket Seal (GIF)