HOME         CATALOGUE          TECH TIPS          SHOW YOUR RIDE         CALCULATORS          ABOUT US         GALLERY        CONTACT US

Cast Iron Pontiac Heads (0)
Cylinder Heads - Aluminum (3)
Cylinder Heads - Aluminum D-port (2)
Engine Dyno Service (0)
Gaskets/Seals (2)
Intake Manifolds (4)
Lifter Bore Brace (2)
Promotional items. (1)
Cylinder Heads - Aluminum D-port
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.

All KRE D-port heads include:(unless stated otherwise)

Precision sized guides

High flowing multi angle valve job on our Rottler SG8 seat and guide machine

Ferrea 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.

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 $82.95.

KRE 295cfm CNC Ported D-port head
The KRE D-port head is a well designed head for street/strip applications. We start with a raw as cast KRE D-port head and CNC port it to flow 290-295cfm @ .550" lift with only 197cc intake runners, we then CNC machine the combustion chamber to a very efficient heart shape allowing more compression on the same fuel when compared to Edelbrock heads.
Our KRE D-port heads feature interlocking valve seats with 2.11" intake and 1.77" exhaust valves, 2.400" long full bronze valve guides for long life in street/strip applications. All our KRE heads are surfaced on the deck and intake surface with an extremely smooth finish prior to assembly so we can tailor the volume to your specific needs, gasket seal with today's mls gaskets is not an issue, please call for details. These heads are set up for hyd. flat, hyd. roller or solid flat tappet applications, spring cups or locators are used to locate the bottom of the spring improving valve and spring stability substantially. We can also set them up for a Solid Roller for an additional charge. In a back to back dyno test these heads will produce as much or more power on a true street/strip pump gas combination when compared to our 315cfm Edelbrock heads.
(Our KRE 295cfm heads require Felpro intake gasket # 1233 or equivalent)
From $1565 each US funds, complete ready to bolt on.

74cc or 85cc $1565.00 each US Funds

Note we can custom tailor the chamber size to meet your needs for no additional charge! e-mail techsupport for more details.

$ 1565.00 each

$ 2191.00 each

KRE 300-305cfm CNC ported D-port head
This head package has everything our 295 package includes with taller intake ports measuring 204cc's. The package was designed for engine combo's utilizing larger duration camshafts. In a recent dyno test on a 434ci 10.8 to 1 engine running on 92 octane with this head package along with a ported Torker II intake, 4150 carb and one of our larger custom hyd. roller camshafts made 604.8hp @ 6700rpm and 545.2 lb/ft of torque @ 5100rpm with a very broad power band. One of our customers is also running a set on his 468 here's a link with all the details http://sdperformance.com/customerCars_01.php?carID=121. This head package has a great balance of flow and port velocity for a wide range of street/strip engine combo's. Give us a call or e-mail for more details.
(requires our SCE 28103 intake manifold gaskets) From $1595.00 each US funds, complete ready to bolt on.

74cc or 85cc $1595.00 each US Funds

Note we can custom tailor the chamber size to meet your needs for no additional charge! e-mail techsupport for more details.

$ 1595.00 each

$ 2233.00 each

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