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Re: Seriously thinking about 305 upgrades
I believe the major reason these engines lack power is that the bore is too narrow to allow enough valve space for the length of the stroke. Intake and carb may help, but I don't think you'll get enough of a difference to justify the cost. Honestly, you'd probably be better off swapping in a salvaged 350 and leaving it stock.
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'04 Cavalier coupe M/T 2.2 Ecotec
Supercharged 14 PSI boost, charge air cooler, 42# injectors
Tuned with HP Tuners
Poly engine/trans/control arm bushings
Self built and self programmed progressive methanol injection system
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