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

Specs
Material Type:
Aluminum
Sold in Quantity:
Each
Finish:
Natural
Port Style:
Square Port
Stud Diameter:
.38
MFG. Part #:
102505
Intake Runners:
180 cc
Exhaust Runners:
62 cc
Combustion Chamber:
64cc
Cylinder Head Style:
Assembled
Spark Plug Style:
Straight
Intake Valve Diameter:
2.02
Exhaust Valve Diameter:
1.60
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"
Flo-Tek 102505 Assembled S/B Chevy Aluminum Head, Straight Plug
Flo-Tek 102505 Assembled S/B Chevy Aluminum Head, Straight Plug

Click image to enlarge

Details

Reviews

Q & A

What's in the Box

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

  • Head is sold individually
  • 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.

 

You may also be interested in:

Flo-Tek 101505 Assembled S/B Chevy Aluminum Head, Angle Plug
SKU-7222200
                        

You don't sacrifice quality for a low price - get both with a Flo-Tek aluminum cylinder head. This Chevy aluminum head is 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.

 


  • Head is sold individually
  • 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 S/B Chevy Aluminum Head, Straight Plug
SKU-7221000
                        

You don't sacrifice quality for a low price - get both with a of Flo-Tek aluminum cylinder head. This Chevy aluminum head is 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.

  • Head is sold individually
  • 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
SKU-9108002
                        
  • 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
SKU-3441206
                        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
SKU-3257501
                        

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)


Edelbrock Rebate May-June (PDF)

Fel-Pro P1010 S/B Chevy 265-400 Copper Ring Head Gasket 4.166 In. Bore
SKU-3441010
                        

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)