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

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Specs
Material Type:
Aluminum
Sold in Quantity:
Each
Finish:
Natural
Cylinder Head Style:
Assembled
Spark Plug Style:
Straight
Port Style:
Square Port
Combustion Chamber:
64cc
MFG. Part #:
102505
Intake Runners:
180 cc
Exhaust Runners:
62 cc
Stud Diameter:
.38
Intake Valve Diameter:
2.02
Exhaust Valve Diameter:
1.60
Spring Diameter:
1.45
Notes
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
Flo-Tek 102505 Assembled S/B Chevy Aluminum Head, Straight Plug
Flo-Tek 102505 Assembled S/B Chevy Aluminum Head, Straight Plug
Flo-Tek 102505 Assembled S/B Chevy Aluminum Head, Straight Plug
Flo-Tek 102505 Assembled S/B Chevy Aluminum Head, Straight Plug
Flo-Tek 102505 Assembled S/B Chevy Aluminum Head, Straight Plug

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Details

Reviews (3)

Q & A (46)

What's in the Box

Info

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.

These fully assembled heads have single valve springs (with flat wire inner damper) with a seat pressure of 130 lbs. They are compatible with solid (mechanical) flat tappet or hydraulic flat tappet cams with up to .550 lift. Valves used 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. 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
  • Viton positive valve seals
  • Straight plug
  • 3/8" screw-in studs and guide plates
  • Port for temperature probe
  • Weighs 28 pounds assembled

Flow Numbers:

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

Notes

Manufacturer's Suggestions:

  • 271C57YC spark plugs (14mm thread, 5/8" hex, flat gasket, .750" reach)
  • Fel-Pro 1034 or 1010 head gaskets
  • +.100" length hardened pushrods (use length checker to establish correct length)
  • 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)
  • Intake Gasket: FelPro 1205 gasket works best with this head (if using a 1204 you will need to do a little trimming around the ports)

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

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