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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

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.

 

Customer Reviews

Rated 4 out of 5 by 2 reviewers.
RATING BREAKDOWN
2 reviews
5 Stars
1
4 Stars
0
3 Stars
1
2 Stars
0
1 Star
0
RECOMMEND THIS PRODUCT:

chasspeed
Verified Purchaser
Waynesville, MO, USA
Product Rating

Great bang for the buck

October 26, 2014
Looks like good castings and comparable features of more exspensive heads.
Yes, I recommend this product.
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Russell Racing
Leavenworth ,Kansas
Product Rating

Intake ports do not line up with gaskets

July 23, 2012
I have a set of these heads and the intake ports are off alignment wise,they do not match gaskets or intake ports,I had to port match mine to match the felpro gaskets,Its in the shape of an L where the ports dont match.I just got my engine running and it seems powerfull though.They relly need to fix this problem Though cant beat the price Bolt holes are not helicoiled either ,like my edelbrock ones were Good for the price
Pros:
  • Price
Yes, I recommend this product.
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Page 1 of 1

Product Q&A

19 questions : 19 answers

what size valve guide seals do these heads use

1 answers
Joe555
December 17, 2014

what size valve guide seals do these heads use

Answers

December 18, 2014
EricM
The top of the valve guides are .540" OD where a seal is pressed on. These assembled heads do have valve guide seals installed.

are hydraulic roller camshafts applicable with these heads?

1 answers
hotrod88
September 10, 2014

are hydraulic roller camshafts applicable with these heads?

Answers

September 10, 2014
EricM
The valve springs on this head have 115 lbs of seat pressure and 240 lbs of open pressure with a maximum lift of .550". They work well with hydraulic flat tappet cams and some of the mild hydraulic roller cams. Compare these valve spring specs with the requirements of your camshaft to determine compatibility.

Can I use a roller cam and roller lifters with these heads? (Descriptions says for use with solid flat or hydraulic flat tappet)

1 answers
burger
August 21, 2014

Can I use a roller cam and roller lifters with these heads? (Descriptions says for use with solid flat or hydraulic flat tappet)

Answers

August 22, 2014
EricM
The valve springs on these heads have the following specs. Compare that to the requirements of your particular roller cam to determine if they are compatible. Valve spring seat pressure - 115 lbs. @ 1.900" installed height Valve spring open pressure - 240 lbs. Max lift - .550"

cam choise If I use this cam and lifter kit number 282122144 what other requirements will need to be addressed along with this cam choice?

1 answers
theswede
August 10, 2014

cam choise If I use this cam and lifter kit number 282122144 what other requirements will need to be addressed along with this cam choice?

Answers

August 11, 2014
EricM
Cam 282122144 is a fairly radical cam and if running an automatic requires a 3500+ stall converter. To get the good out of that cam with a 3000-7000 rpm power band then you will need fairly deep rear end gears such as 4:10 to 4:56. With the rpm range and required gears that is not the typical street cam but more oriented for the drag strip.

What head bolts and washers do you recomend with these heads?

1 answers
SkiBoat
Wyoming
December 10, 2013

What head bolts and washers do you recomend with these heads?

Answers

December 10, 2013
EricM
ARP head bolt set 1011343601 comes complete with washers or Manley bolts 50542171 (qty 2 required per engine) and washers 50542102 work great as well.

which aluminum intake works best with these heads

1 answers
doubleeagle
Topeka, KS, USA
November 07, 2013

which aluminum intake works best with these heads

Answers

November 08, 2013
Jason
The Edelbrock RPM air-gap intake part #3257501 works well with the Flo-Tek aluminum cylinder heads.

Will they work with stock exhaust manifolds.. 72 sbc 350 . Over the plug exhaust manifolds..

1 answers
Timothy
Michigan
August 06, 2013

Will they work with stock exhaust manifolds.. 72 sbc 350 . Over the plug exhaust manifolds..

Answers

August 07, 2013
Jason
The Flo-tek small block chevy heads have a standard square exhaust port design. These will work with OEM exhaust manifolds or headers.

will std exhaust headers fit will my Patriot headers fit these heads?

1 answers
harley4me
November 18, 2012

will std exhaust headers fit will my Patriot headers fit these heads?

Answers

November 19, 2012
Jason
These are a standard exhaust port design head

I see that these heads have 1.437" valve springs. Will a stock sbc rocker arm work with these springs?

1 answers
scottyp99
November 13, 2012

I see that these heads have 1.437" valve springs. Will a stock sbc rocker arm work with these springs?

Answers

November 13, 2012
Jason
A stamped steel rocker arm will have clearance issues. Most aftermarket rockers will clear with out issue

What is the recommended intake manifold gasket to use with these heads?

1 answers
themanwithnonickname
October 25, 2012

What is the recommended intake manifold gasket to use with these heads?

Answers

October 26, 2012
Jason
The FelPro 1205 gasket works best with this head. If using a 1204 you will need to do a little trimming around ports
Page 1 of 2

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