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Dart Iron Eagle Assembled Chevy Heads, Angle Plug, 200cc/49cc

Specs
Material Type:
Iron
Sold in Quantity:
Pair
Finish:
Natural
Port Style:
Square Port
Intake Runners:
200cc
Combustion Chamber:
49cc
Cylinder Head Style:
Assembled
Spark Plug Style:
Angle
Intake Valve Diameter:
2.02
Exhaust Valve Diameter:
1.60
Spring Diameter:
-
Dart Iron Eagle Assembled Chevy Heads, Angle Plug, 200cc/49cc
Product Video
Dart Iron Eagle Assembled Chevy Heads, Angle Plug, 200cc/49cc

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Watch the video below to learn about the technology behind Dart SBC heads.

Details

Reviews

Q & A

What's in the Box

These complete Dart Iron Eagle Platinum cylinder heads are professionally assembled right here at Speedway Motors. We offer three different versions of each head (Street Ready, Flat Tappet Ready, Roller Ready) to perfectly suit your racing needs.

  • Standard 23 degree valve angle
  • Standard port location and intake bolt pattern fit most manifolds
  • Pushrod holes enlarged for clearance with high ratio rocker arms
  • Heart shaped chambers improve combustion efficiency
  • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow
  • Hardened exhaust seats compatible with unleaded gasoline
  • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life
  • Spark plug holes are machined for tapered seat 5/8" hex "peanut" spark plugs
  • Dual bolt pattern accepts flange mount and center bolt valve covers

Head Application Chart (GIF)

Roller Ready - Please specify cam lift in comments section when ordering.

Specs

Item Details

Angle Plug
200cc Intake Runner, 49cc Combustion Chamber

Customer Reviews

This product has no reviews.

Product Q&A

3 questions : 3 answers

What kind of brand and style valves are in these heads, springs? Do you offer assembly if i pay for upgrades?

1 answers
moreymoto
Hawaii, USA
March 03, 2015

What kind of brand and style valves are in these heads, springs? Do you offer assembly if i pay for upgrades?

Answers

March 03, 2015
EricM
We use valves 91014141-1 and 91014146-1 for these heads. The valve springs will vary depending upon the STRT, FLAT, or RACE assembly. The STRT version uses 180671515 valve springs for hydraulic lifter camshafts. The FLAT version uses 91599893 valve springs for solid flat tappet camshafts. The RACE version uses 91599876 valve springs for solid roller camshafts.

Does these heads require a custom piston? Ive been told they are 21.5 degree heads? Dart told me the heads are 21.5 degrees and I would need a custom piston to run these heads.

1 answers
05RACER
Louisiana, USA
November 20, 2014

Does these heads require a custom piston? Ive been told they are 21.5 degree heads? Dart told me the heads are 21.5 degrees and I would need a custom piston to run these heads.

Answers

November 21, 2014
EricM
Yes these heads are actually a 21.5 degree valve angle. The need for custom pistons will depend upon the compression you are after and how much valve lift your cam will provide. If using a flat top piston and a cam with .500" or less valve lift then you can typically get by with standard pistons. We do offer a couple of pistons from ICON that are designed for these heads. Part number 474964 is a dome piston for 4" bore and 3.875" stroke that has a dome made for these heads as well as extra deep valve reliefs at the proper angle. This piston provides 14.2:1 compression with this 49cc head. Part number 474966 is for 4.125" bore 3.875" stroke flat top piston that has extra deep valve reliefs which are at the proper angle for these heads. This piston provides 14:1 compression with this 49cc head.

Valve size and valve springs size? Just wandering if these heads come with 2.02 & 1.6 valves, and also wandering if it is the 1.250 valve springs. And what size max cam can I run with these heads if I order the FLAT TAPPET ready set?

1 answers
Caleb08
May 01, 2014

Valve size and valve springs size? Just wandering if these heads come with 2.02 & 1.6 valves, and also wandering if it is the 1.250 valve springs. And what size max cam can I run with these heads if I order the FLAT TAPPET ready set?

Answers

May 02, 2014
EricM
Yes these have 2.02" intake and 1.6" exhaust valves. The flat tappet ready assembled heads come with 1.465" dual valve springs part number 91599893 which are good for up to .650" lift.
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  • Standard 23 degree valve angle
  • Standard port location and intake bolt pattern fit most manifolds
  • Pushrod holes enlarged for clearance with high ratio rocker arms
  • Heart shaped chambers improve combustion efficiency
  • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow
  • Hardened exhaust seats compatible with unleaded gasoline
  • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life
  • Spark plug holes are machined for tapered seat 5/8" hex "peanut" spark plugs
  • Dual bolt pattern accepts flange mount and center bolt valve covers

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  • Standard 23 degree valve angle
  • Standard port location and intake bolt pattern fit most manifolds
  • Pushrod holes enlarged for clearance with high ratio rocker arms
  • Heart shaped chambers improve combustion efficiency
  • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow
  • Hardened exhaust seats compatible with unleaded gasoline
  • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life
  • Spark plug holes are machined for tapered seat 5/8" hex "peanut" spark plugs
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Head Application Chart (GIF)

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  • Standard port location and intake bolt pattern fit most manifolds
  • Pushrod holes enlarged for clearance with high ratio rocker arms
  • Heart shaped chambers improve combustion efficiency
  • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow
  • Hardened exhaust seats compatible with unleaded gasoline
  • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life
  • Spark plug holes are machined for tapered seat 5/8" hex "peanut" spark plugs
  • Dual bolt pattern accepts flange mount and center bolt valve covers
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  • Standard 23 degree valve angle
  • Standard port location and intake bolt pattern fit most manifolds
  • Pushrod holes enlarged for clearance with high ratio rocker arms
  • Heart shaped chambers improve combustion efficiency
  • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow
  • Hardened exhaust seats compatible with unleaded gasoline
  • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life
  • Spark plug holes are machined for tapered seat 5/8" hex "peanut" spark plugs
  • Dual bolt pattern accepts flange mount and center bolt valve covers

Head Application Chart (GIF)

Roller Ready - Please specify cam lift in comments section when ordering.

Dart Installation Note (PDF)

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  • Standard 23 degree valve angle
  • Standard port location and intake bolt pattern fit most manifolds
  • Pushrod holes enlarged for clearance with high ratio rocker arms
  • Heart shaped chambers improve combustion efficiency
  • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow
  • Hardened exhaust seats compatible with unleaded gasoline
  • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life
  • Spark plug holes are machined for tapered seat 5/8" hex "peanut" spark plugs
  • Dual bolt pattern accepts flange mount and center bolt valve covers

Head Application Chart (GIF)

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