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Building A Performance Pontiac Motor Valves
Dyno Testing A Home-Built Pontiac Motor - Backyard-Built Bruiser
Here you can see quite a bit of SD's handiwork. Note how the chamber is now a heart shape to promote swirl, improve combustion and ward off detonation. According to SD Performance, the efficiency of the chamber allows for 2-degrees less timing. The valves are large 2.19 intakes with 1.77 exhausts. Cygan says, "The intake valve is actually big for this combo and is shrouded more with the 4.190 bore than we would like to see, but we did it because we may run an IA II block in the future. This way we don't have to redo the heads." Chamber size has also been reduced to 64 ccs to increase compression. Dave related that regardless of any shrouding, the big intake valve will still make more power, even with the relatively small bore, than the 2.11-inch intake. View Related Article
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Pontiac Solstice Research
Pontiac Solstice Get updated on all your car buying needs from safety features, to specs, to crash test ratings and options. Get all the information you need if you are interested in buying a new car like the Pontiac Solstice. The L4 standard engine in the Solstice gives you 173 horsepower with an estimated 22 mpg. It has a comparable trade in value which should come in handy when you go to shop for your next car. The Pontiac Torrent and the Pontiac G6 are other vehicles that might interest you.
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