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Bill Baker's 1969 GTO
(In His own Words)

Since installing a set of Street 6X's on my 455 HO I have knocked off almost 4 tenths of a second. I replaced the #64 heads that were 10.75 to 1 with these 6X's and couldn't believe that I could get more power with lower compression. Pump Gas with more power how can you ask for more. I can run 91 octane at 34 degrees total advance. Don't take a chance from someone that doesn't know Pontiac Heads, Call Dave at SD Performance.


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 >>



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