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5 axis CNC Porting Service (4)
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Cylinder Heads - Aluminum (6)
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Oil Pans/Pumps & Accessories (8)
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Pushrods (2)
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Cylinder Heads - Aluminum
   
NEW!! All our Standard Pushrod location Edelbrock RPM heads are now built on the new improved castings with fully CNC machined heart shaped chambers and relocated spark plug for improved combustion efficiency


SD Performance spends an extensive amount of time on the dyno, at the track and on the street to develop some of the best performing Pontiac ported cylinder heads on the market today. SD Performance has more 5 Axis CNC Porting and Combustion Chamber Programs for Pontiac heads then anyone and we are constantly working on more and improving existing programs in our never ending search for more pure Pontiac power. All of our heads are flow tested on our state of the art computerized Superflow 600 flowbench equipped with velocity probes, but we’ve learned that what really counts, is how our heads work in the real world. A flowbench is a great tool which we use daily, but there is more to an efficient head than just flow, too many put their faith in flowbench numbers alone.

If you already have a set of Edelbrock heads we can apply all our packages or just porting to your existing heads as well, drop us a line for more details.

SD Performance has developed our own CNC machined 87cc combustion chamber which we machine into Edelbrock 72cc heads (old style castings), on a back to back dyno comparison our 87cc chamber required about 2 degrees less timing when compared to the std. 87cc Edelbrock combustion chamber (less timing indicates better combustion efficiency which equates to more power with less fuel required and less chance of pre-detonation). We are also able to custom size chambers from 74-90cc's. If you own a set of 72cc heads and want a larger chamber we can take care of that, shoot us an e-mail at techsupport for more details.

All Edelbrock/KRE heads include:(unless stated otherwise)

  • Precision honed guides

  • High flowing multi angle valve job on our state of the art Rottler SG8 seat and guide machine

  • Ferrea and/or Manley stainless steel valves with multi angle cuts for better off the seat flow

  • Chrome moly retainers with 10 degree locks

  • Viton seals on intake and exhaust guides, for the best oil control available

  • Fully CNC ported intake and exhaust ports

  • Notched for 1.65 rockers

  • Improved oil drainback

  • Flow chart

  • ARP 7/16” rocker studs

  • Precision assembly - SD Performance precision assembly means, we test ALL valve springs on a digital spring tester, and set ALL installed heights individually to equalize the springs as close as possible.


OPTION: Heart shape chamber available for Edelbrock heads(72cc chamber only) $125.00 per head
shoot us an e-mail at techsupport for more details.

NEW!!! OPTION: Forced induction/Nitrous chamber available for Edelbrock RPM heads with volumes up to 100cc's (see pic above left) $100.00 per head
shoot us an e-mail at techsupport for more details.

OPTION: Aux. Oil Drain Back holes are a no cost option for all Edelbrock head packages 340cfm and up. Holes (one on each head) are drilled and tapped for 3/8" NPT threads and are right in line with the rear oil drain back hole and exit above the rear exhaust port.

Don't Forget, all Aluminum heads will not work with OEM head bolts and require new Head Bolts or Head Studs, we have ARP fasteners in stock from $75.00.




Edelbrock 315+ cfm CNC Ported Street Heads
(New CNC machined heart shaped chambers with improved spark plug location!!)
Street Edelbrock heads, setup for hyd. flat tappet or solid or hyd. roller cam, includes everything above, fully CNC ported to flow 315+cfm@ .600” lift @ 28”, no extra cost valve size options, 2.11” intake valves, 1.66” or 1.77” exhaust valves. Intake Port entrance is matched to RAIV/Felpro 1233 size. More flow throughout all valve lifts compared to out of the box Edelbrock heads with better components installed for only a few dollars more!!!!

72cc CNC heart shaped chambers $1480.00 each US Funds

87cc CNC heart shaped chambers $1480.00 each US Funds




$ 1450.00 each

$ 1986.50 each


Edelbrock 325 cfm Street/Strip Heads
(New CNC machined heart shaped chambers with improved spark plug location!!)

This package is designed to give the absolute most bang for your buck, SD gives you more for less$$$, no one offers this much cylinder head for the same money. Street/Strip Edelbrock heads, setup for hyd. flat tappet or solid or hyd. roller cam, fully custom assembled with Ferrea stainless steel valves etc. ready to bolt on out of the box!!!, CNC ported to flow 265cfm @ .400" lift, 295cfm @ .500" lift 320-325cfm @ .600” lift @ 28” with 2.19” intake valves, 1.77” exhaust valves. Custom tailored chamber sizes at no extra cost!!

72cc CNC heart shaped chambers $1490.00 each US Funds

87cc CNC heart shaped chambers $1490.00 each US Funds


$ 1490.00 each

$ 2041.30 each


Edelbrock 335 cfm Race Heads Hyd. Roller/Solid Flat Tappet
(New CNC machined heart shaped chambers with improved spark plug location!!)

Race Edelbrock heads with 235cc intake runner volume, includes everything above, CNC ported to flow 335cfm @ .700” lift @ 28” and assembled with Ferrea 6000 series 2.200" intake valves and our custom Manley 1.740" exhaust valves

72cc CNC heart shaped chambers $1575.00 each US Funds
87cc CNC heart shaped chambers $1575.00 each US Funds


$ 1575.00 each

$ 2157.75 each


Edelbrock 340-350 cfm Std. Pushrod Location Street/Strip Race Heads
(New CNC machined heart shaped chambers with improved spark plug location!!)

Edelbrock head package up to 340cfm on a 4.185" bore and up to 350cfm on a 4.250" or larger bore @ .700" lift. The heads feature 2.200" intake valves for stock block combo's, 2.250" intake valves for larger bore aftermarket block combo's and high flowing tuliped 1.740" exhaust valves. The exhaust port CNC program is borrowed from our wide port Edelbrock package. These heads on a 10.6 to 1 498ci engine (400 block 4.195" bore 4.5" stroke) on 92 octane produced 700hp @ 6200rpm and 647b/ft of torque @ 4900 rpm with a very street friendly hyd. roller camshaft topped with a port matched Victor with our CNC machined plenum. On a 541ci 10.8 to 1 pump gas engine with one of our custom solid roller cams these heads and matching CNC ported and hand finished Victor intake produced 784.3hp @ 6700rpm and 687.5 lb/ft of torque @ 5400 rpm Here's a link to one of our customers track testing www.sdperformance.com/customerCars_01.php?carID=161 Prices start at $1600.00 each for a flat tappet/hyd. roller package and are a great choice for your big inch street/strip or bracket race build allowing the use of std. valvetrain components.

72cc CNC heart shaped chambers$1600.00 each US Funds

87cc CNC heart shaped chambers$1600.00 each US Funds

Two entrance port heights available for use with std. intakes like the Torker II and Performer RPM or a taller port version (higher flowing 247cc intake runner volume) for use with a Victor or KRE Northwind intakes.

Own a set of Edelbrock heads already? We can apply these new bigger flow packages to your existing heads also!!

CNC ported and hand finished Victor intake now available, our CNC machined and hand finished plenum showed 20-25hp gain over an as cast cloverleaf plenum on a back to back dyno test, call for details and pricing!!!

CNC ported and hand finished KRE Northwind Intake now available!!! Call for more details and for a top end package price!!! SAVE $$$$



$ 1600.00 each

$ 2192.00 each


Edelbrock Offset Shaft Rocker Race Heads
Offset Shaft Rocker Race Heads, CNC ported to flow 370cfm @ .750" lift with 267cc intake runner volume.
Includes 2.250" intake valves, custom tulip shaped, severe duty 1.740" exhaust valves, titanium retainers, spring locators, roller cam valve springs good to .750" lift, 9/16" dia. pushrod holes to allow for 3/8" pushrods, welded and CNC machined heart shaped combustion chambers (exclusively available from SD Performance)
These heads utilize a higher velocity port design with more mid lift flow when compared to other wide port heads on the market and only require .500" offset shaft rockers and .180" offset lifters, reducing pushrod angle which improves valvetrain stability.
These are the ultimate Edelbrock race heads! Capable of producing 900+hp on race gas and we've made 825+hp on pump gas with these heads and our matching Victor intake, e-mail techsupport for more details.

Larger Chambers up to 90cc are available without heart shape, contact us for more details and pricing

Crower Stainless Steel .500" Offset Shaft Rockers and Crower .180" Offset lifters With High Pressure Pin Oiling Option In Stock, e-mail techsupport for package pricing.


$ 1795.00 each

$ 2459.15 each


CNC Wide Port Victor Intake
Edelbock Victor 4500 intake, CNC ported runners and plenum with hand blending and finishing (dyno testing showed 20-25hp gain over as cast cloverleaf plenum) to properly match our CNC ported wide port Edelbrock heads.
Each runner is flow tested to make sure it flows what it should to make max power.
In addition to the porting, we CNC machine the top of the intake runners for valve cover clearance, clearance the center runners for bolt clearance as well as separate the water crossover for easier port alignment.
If you have ever tried installing a Victor intake out of the box, the extra steps we take to make this manifold a bolt on will save you a ton of time and hassle. ($595.00 using customer supplied Victor intake)


$ 895.00

$ 1226.15



   
  * SD Performance reserves the right to change prices without notification.  
  * Canadian customers, please add GST. BC customers, please add GST and PST  
  Accepted.