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Aluminum Heads allow the greatest flexibility for head porting and bench flow testing. Ask any racer, and he will agree that properly flowed heads build great amounts of power, and properly manufactured performance flowed aftermarket aluminum heads make the most

On Line Performance Parts

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At Performance parts on line, we are a distributor for World Products - Dart Racing Heads.   We get a great price on these assemblies and pass them directly to you.  Heads from other manufacturers are available for you to purchase but, at a higher price to value ratios since they have to travel through other channel distributors instead of being factory direct to our shop.  We are providing the best deals to our customers with World Products / Dart brand heads due to the amount of volume that we sell.

Brodix Cylinder Heads

Chevy Cylinder Heads  Bare or Fully Assembled

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DART HEADS

Aluminum Heads Core Blanks and Complete Assemblies

The New Dart 410M Big Block Chevy racing heads are in.

These babys are CNC milled at the factory requiring minimal prep work for the ULTIMATE maximum air flow!  Add some minimal porting enhancements, perform some flow testing, assemble them and just bolt them on for instant high end racing horsepower. These heads are designed for all out high RPM racing.  Core prices expected to be under $2K a pair, Then if you want add $400 in additional prep work puts the ultimate in Big Block high performance racing heads in many racer's budgets.  Call for availability and delivery dates         

Big M Spec Sheet                                                                                                    
Big Chief Spec Sheet
Pro 1 BB Chevy Spec Sheet
Pro 1 SB Chevy Spec Sheet
220 SB Chevy Race Head Spec Sheet
18* SB Chevy Spec Sheet
320/360 BB Chevy Race Head Spec Sheet

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WORLD PRODUCTS HEADS

Aluminum Sportsman II Cylinder Heads SB Chevy

Part#        Description                                                                *Price

2115b     64cc Angle Plug Bare Casting                              $call
2115a     64cc Angle Plug Assembly                                     $call
2125b     64cc Straight Plug Bare Casting                          $call
2125a     64cc Straight Plug Assembly                                 $call
2215b     72cc Angle Plug Bare Casting                              $call
2215a     72cc Angle Plug Assembly                                     $call
2225b     72cc Straight Plug Bare Casting                          $call
2225a     72cc Straight Plug Assembly                                 $call


Aluminum Merlin and Merlin VR Cylinder Heads BB Chevrolet

Part#        Description                                                                                             Price *

2003b     Merlin 310cc Rectangular Port Bare Casting                            $call
2003a     Merlin 310cc Rectangular Port Assembly                                   $call
2062b     Merlin VR RACE/MARINE 310cc Rect Port Bare Casting       $call
2062a     Merlin VR 310cc Rect Port Assembly                                            $call
2063b     Merlin VR RACE/MARINE 345cc Rect Port Bare Casting       $call
2063a     Merlin VR RACE 345cc Rect Port Assembly                               $call
2072       Merlin VR Marine 310cc Rectangular Port Assembly              $call
2073       Merlin VR Marine 345cc Rectangular Port Assembly              $call

Aluminum Windsor / Windsor Jr. Ford 289-302, 351W

Part#       Description                                                                                            Price*
2302b    Windsor 64cc Bare Casting                                                            $call
2302a    Windsor 64cc Assembly                                                                   $call
2303b    Windsor Jr. 58cc Bare Casting                                                      $call
2303a    Windsor Jr. 58cc Assembly                                                             $call

Big Block Chrysler B/RB Aluminum Indy Cylinder Heads

Part                Description                                                                                  Price
2604B           440 Torquer Bare Casting                                                     $call
2604A           440 Torquer Assembly                                                            $call
2603B            Pro 440 310cc Bare Casting                                                $call
2603A            Pro 440 310cc Assembly                                                       $call
2603-4150    Pro 440 RB Complete Package w/ 4150 Intake             $call
2603-4500    Pro 440 RB Complete Package w/ 4500 Intake             $call

COMPARISON: OE -- S/R TORQUER -- SPORTSMAN II

Before you rebuild a pair of heads or choose another brand of aftermarket heads for your small block Chevy,be sure to read the following comparison.

Attribute  OE S/R Torquer  Sportsman II
 Intake Runner Volume  150cc-155cc  170cc  200cc
 Chamber Volume  76cc  67cc or 76cc  64cc or 72cc
 Chamber Shape  open  open  heart shaped
 Valve Sizes Stock 1.940"x1.500" 2.020"x1.600" 2.020"x1.600" 
 Valve Sizes Maximum *2.020"x1.600" *2.020"x1.600" 2.100"x1.625"
Accepts Screw-In Rocker Studs  no yes  yes
 Accepts pushrod guide plates no* no* yes
 hardened steel exhaust seats after 1973   yes  yes
 dual 1.250"/1.550" spring pads  no* no* yes
 spark plug location straight  straight  straight or angled
 three angle valve job  no yes yes
 deck thickness

 ???

extra thick

 extra thick

 Can be ported to 225cc

 no*

 no*

 yes

 Accepts all year accessories

 no

yes

yes

 50 State Legal

 yes

yes

yes

 Fully machined valve cover rails

 no

yes

 yes

 Raised valve cover rails

 no

 yes

yes

 

 

 

 

 

 

 

 

 

 

 

 

*If you're even thinking about porting, guide plates, big springs or other mods; start with Sportsman II's. Mill, grind, poke or prod; you'll never get the Sportsman II's chamber shape or maximum proportions from OE or S/R Torquer. Stop at a bowl blend.

That's 17 reasons to never-ever rebuild another pair of station wagon heads ever again.

QUESTION: How much does it cost to turn a average OE castings into S/R Torquers? Ignore the 15-20cc intake runner volume gain, extra thick decks, and "new" value

Casting cost, cut for 2.020x1.600 valves, 3 angle valve job, screw-in rocker studs, and rebuild (boil, square decks, guides, etc.). Maybe add new hardened exhaust seats

-OE covers 95% (probably 99%) of factory castings owned by enthusiasts.-Yes, there were 2.02 "fuelie" heads made a long long time ago that perform as well as the World S/R Torquer. Those heads are now rare, in poor condition, expensive, bogus or all of the above.

-Yes, there are aftermarket heads that perform as well as the Sportsman II. But all of these heads are cast in aluminum, and sell for about $1200 to $1600--nowhere near the Sportsman II's assembled price of $800. Aluminum Sportsman II's are available for about $1,200 as well.

-Yes, there are aftermarket heads comparable to the 170cc S/R Torquer Most of these heads sell for $999, some $899 None are available for $485 bare or about $700 assembled. $700 with Manley valves and other quality parts!


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Edelbrock Heads

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Trick Flow Heads

Twisted Wedge Street Aluminum Small Block Chevy Cylinder Heads dyno tests show 50HP and 20 more Ft. Lbs. of torque than Corvette L98 heads on a 350 Chevy, 64cc chambers, come assembled complete with Stainless valves.

Twisted Wedge R-Series Aluminum Small Block Ford Cylinder Heads

2.08" intake and 1.60" exhaust valve sizes, 61cc chambers, 206cc intake runner volumes, a great head for drag racing.

Twisted Wedge Street Aluminum Small Block Ford Cylinder Heads

2.02" intake and 1.60" exhaust valve sizes, available in either stud or pedestal mount rocker arm styles, 50 state emission legal for 96 and earlier engines.

Trick Flow Rectangular (A460) 429/460 Aluminum Cylinder Heads ( currently out of production)

These heads helped Dave Sobczak set the NHRA A/D Competition Eliminator national record at 6.78ET / 199.3 MPH 1/4 mile.  86cc chambers, 320cc intake runners, 2.35" intake valves and 1.94" exhaust valves.

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