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b17 crank in a b20 block

Discussion in 'Engine Building' started by Face, Dec 10, 2003.

  1. Face

    Face Junior Member

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    It is possible to run a b17 crank in a B20 block. If so, what other mods are needed? I want to run a b16a head as well. I read a article once before that said this is possible and the benifit of doing so it that you de-strock the engine, therefore creating a higher reving engine.

    Has anyone seen this article on the web, if so where?
     
  2. dohch22a4

    dohch22a4 Senior Member

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    I don't see why this would be beneficial unless you had a bare B20 block. A longer stroke will always be better if you are using forged parts, which i assume you would if your were doing a serious engine build up. Is it possible? Yes. Is it pointless? Yes. Why would anyone want to LOSE displacement?
     
  3. brian11to1

    brian11to1 Senior Member

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  4. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Unless you want to lose torque and displacement to rev higher and regain that lost torque and power at a higher rev level... this is pointless.

    B17 crank: lose displacement, lose torque, lost torque = less power for same rev level, so you have to rev higher to get it back

    B20 crank: higher displacement, more torque = more power for same rev level, less revs with same power = longer lasting engine

    I revved my B20 block to 8500 all the time and didn't have any problems with it. The crank was stock, the B16 head was stock- the only aftermarket pieces in there were the rods, pistons, and ARP fasteners.
     
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