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Cast Iron Head packages
June 15, 2020

With the volume of cast iron cylinder head work that has come in the shop this year we have decided to more >>

What's going on at SD in 2020
May 28, 2020

We're keeping plenty busy in the shop in this crazy world we're all living in. Demand for our CNC ported more >>

End of 2018 is fast approaching!!
December 4, 2018

Well it's been a while since we had an update on what's been going on at SD so here's a quick overview. more >>

Northwind Intake manifold Dyno Testing.
December 23, 2009

Well we had a chance to test the new Northwind on a 535 pump gas hyd. roller engine recently against more >>

2009 What a Year!!
December 19, 2009

Well we're coming to the end of 2009, to say it's been a challenge is an understatement. Three days into more >>

Mudslide Jan 2009
January 24, 2009

Early Jan. 8th 2009 our shop was hit by a land/mudslide after some less then typical weather conditions, more >>

KRE D-port Timing Test
March 14, 2008

We finally were able to get a set of our 85cc KRE D-port heads on the dyno to see how much timing lead more >>

Intake Manifold Dyno Test
November 10, 2007

We decided to do some intake manifold comparison testing on a 474ci engine running a set of our 290cfm more >>

Back To Back Dyno test KRE D-Port vs. Edelbrock
October 29, 2007

Well we finally made it to the dyno with a set of our new CNC ported 290cfm KRE D-port heads with our more >>

Heart Shape Combustion Chamber Dyno Test
May 18, 2007

We prepped 2 sets of Edelbrock 330cfm CNC ported heads one with the as cast chamber and the other with more >>

SD Now Offers Custom Chamber size options on Edelbrock heads.
February 17, 2007

After a back to back dyno comparison our in-house custom machined 87cc Edelbrock combustion chamber required more >>