Pontiac - Boost Turbo, supercharged, Nitrous, EFI & other Power Adders discussed here.

          
 
 
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Old 01-20-2015, 12:14 PM
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charlie66 charlie66 is offline
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Default Turbo shortblock combos

I've been thinking about building a small ci turboed street motor. Something like a 400ci with a 3.40 or 3.30 stroke. I always have liked the idea of a small stroke big bore for a street driven setup to get rid of some of that unwanted torque that kills a street cars performance . But then the other day I saw a 1967 326 for sale and thought to my self, this motor would have a really small bore ,still being bigger then the stroke. The bore would be .339 smaller the 400ci which I know is not that much smaller but I thought it might give the piston more stability in the bore. Is the 326 block as strong as the 400 . I would think it would be stronger with maybe having more meat in the cylinder bore but not sure about the webbing area . Now after having built a 4 cylinder I know from my own experience that ci doesn't make or break you with a turbo in making more power then a street car really needs. My guess with building a short stroked 326 will be , it will make more power with less boost then the 4 cylinder and have more reliability in the end. It will still have some cool factor like to 4 cyl because who really does these motors like this..

Please let me know what you guys think...

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