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800.979.0122

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RHS Pro Action Small Block Chevy Cast Iron Heads, Angle Plug, 200cc/64cc

RHS Pro Action Small Block Chevy Cast Iron Heads, Angle Plug, 200cc/64cc
RHS Pro Action Small Block Chevy Cast Iron Heads, Angle Plug, 200cc/64cc
RHS Pro Action Small Block Chevy Cast Iron Heads, Angle Plug, 200cc/64cc

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Details

Reviews

Q & A

What's in the Box

These heads deliver significant gains in both power and torque for all Small Block Chevy applications - right out of the box. Available for a variety of applications (see chart). All heads feature a multi-angle Serdi valve job.

  • Standard port 23° head
  • Accepts standard Chevy rocker arms and valve train components
  • Advanced port/runner/chamber design & modified water jacket for optimal performance & added reliability
  • Multi-angle intake & radiused exhaust valve seats for up to 5% more airflow 
  • 200cc recommended for 327-350 c.i. up to 400+ HP
  • 220cc recommended for 383-400+ c.i. up to 550+ HP

Application Chart (GIF)

Roller Ready - Please specify cam lift when ordering. 

Complete heads are made to order, please allow 3-4 days to assemble.

Item Details

Angle Plug
200cc Intake, 64cc Combustion Chamber
Made to order, allow 3-4 days to assemble.

Specs

  • Recommended Spark Plug: 14 mm, 5/8" hex, .480 reach plugs, tapered shaft
  • Approximate Compression Ratios Chevy 350 w/ Keith Black 474-120 flat top pistons:
    • 64cc = 10.2 to 1
    • 50cc = 12.04 to 1 

Customer Reviews

This product has no reviews.

Product Q&A

2 questions : 2 answers

1 answers

seats & guides What are the seats and guides made of? Thanks Paul

paikenent
Maine
January 30, 2014

seats & guides What are the seats and guides made of? Thanks Paul

Answers

January 30, 2014
EricM
These have bronze guides and the seats are flame hardened cast iron.
1 answers

These heads are listed as 220 heads. item specs says 200 which are they? also what is max lift in these heads?

MudPartol
Des Moines, IA, USA
January 16, 2014

These heads are listed as 220 heads. item specs says 200 which are they? also what is max lift in these heads?

Answers

January 16, 2014
EricM
Sorry for the confusion. These are 200cc intake runner, 64cc combustion chamber cylinder heads with angle plugs. Max lift with the valve springs provided is .500" lift. The valve springs are intended for use with hydraulic lifter camshafts.
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Dart Iron Eagle Assembled Chevy Heads, Angle Plug, 200cc/64cc
(Part #3041001)
                        

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.

Iron Eagle Tech Notes (PDF)

Dart Installation Note (PDF)

Recommended Spark Plug: 14 mm, 5/8" hex, .460 reach, taper seat

Item Details

Angle Plug
200cc Intake Runner, 64cc Combustion Chamber
RHS Pro Action Small Block Chevy Cast Iron Heads, Angle Plug, 220cc/64cc
(Part #5902238)
                        

These heads deliver significant gains in both power and torque for all Small Block Chevy applications - right out of the box. Available for a variety of applications (see chart). All heads feature a multi-angle Serdi valve job.

  • Standard port 23° head
  • Accepts standard Chevy rocker arms and valve train components
  • Advanced port/runner/chamber design & modified water jacket for optimal performance & added reliability
  • Multi-angle intake & radiused exhaust valve seats for up to 5% more airflow 
  • 200cc recommended for 327-350 c.i. up to 400+ HP
  • 220cc recommended for 383-400+ c.i. up to 550+ HP

Application Chart (GIF)

Roller Ready - Please specify cam lift when ordering. 

Complete heads are made to order, please allow 3-4 days to assemble.

Item Details

Angle Plug
220cc Intake, 64cc Combustion Chamber
Made to order, allow 3-4 days to assemble
World Sportsman II Small Block Chevy Iron Heads, Angle Plug
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The industry’s most popular true high performance cast iron cylinder head has been continuously improved since its introduction over 20 years ago. With 200cc intake and 69cc exhaust ports, World’s Sportsman II cylinder heads offer 30-70 horsepower gains over OEM cast iron heads, yet are 50-state emissions legal.

  • Bolt on from 30 to 70 additional H.P. (Dyno Proven)
  • Combustion chambers available in 64cc
  • Available with either angle, or straight spark plugs
  • 200cc intake runners
  • Fully machined rocker cover rails
  • Higher, wider, raised roof intake runner with improved short turn radius

Sportsman II Application Chart (GIF)

824-1112 Instructions (PDF)

Please specify cam lift in comments section when ordering heads.

Assembled heads are built to order.

Item Details

Angle Plug, 64cc Chambers
Wissota Approved #1115
Autolite AR93 Power Tip Spark Plug 5/8 Hex .708 Reach Tapered Seat Med
(Part #37393)
                        

Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Heat range medium. 

  • Power Tip
  • 14mm plug
  • .708" reach
  • 5/8 hex
  • Tapered seat
  • Non-resistor
  • Vendor Number: AR93

Note: Please use the Vendor Number to reference the PDF chart links listed.

Heat Range Chart (PDF)

Racing Plug Tech Note (PDF)

Understanding Heat Range (PDF)

Autolite Cross Reference Chart (PDF)

Item Details

.708" Reach 5/8" Hex Tapered Seat Power Tip
Vendor Part Number AR93
Autolite AR473 14 mm Racing Spark Plug-5/8 Hex-Tapered-.708 Reach, Med
(Part #373473)
                        

Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Heat range medium. 

  • Standard tip
  • 14mm plug
  • .708" reach
  • 5/8" hex
  • Tapered seat
  • Non-resistor
  • Vendor Number: AR473

Note: Please use the Vendor Number to reference the PDF chart links listed.

Heat Range Chart (PDF)

Racing Plug Tech Note (PDF)

Understanding Heat Range (PDF)

Autolite Cross Reference Chart (PDF)

Item Details

Medium
Vendor Part Number AR473
Speedway 1957-85 Chevy 283-350 Complete Gasket Set
(Part #91010255)
                        

Speedway Chevy gaskets are for 2-piece rear main blocks. Oil pan gasket can be used with either RH or LH dipsticks and includes both thin and thick seals. Valve cover gaskets are 5/16" rubberized cork suitable for racing.

  • Suitable for engines up to 600 h.p. 
  • Intake Gasket: 1205 style, 1.28" x 2.09"

Item Details

1957-85 w/ 4.00" Bore