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

Michael Mattiaccio's 1969 GTO
(In His own Words)

just an update from 2008,the car now runs at 12.5 @ 107 in the quarter thanks to SDPERFORMANCE cutting my cast iron intake to Cliff Ruggles specs with a Cliffs Q-JET.

link to before performance http://sdperformance.com/customerCars_01.php?carID=67


News & Events

What's going on at SD in 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!!
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.
Well we had a chance to test the new Northwind on a 535 pump gas hyd. roller engine recently against more >>



Engine Specs.