Everyone,

   I have been given the opportunity to have a 12a engine.  So, will it
   work in place of a 13b ?  Normally aspirated, what horsepower will it
   make ?  Will the PSRU's etc., bolt up to it ?  What should I expect or
   should I look for a 13b ?  Ignition, intake, exhaust, cooling, etc. ??

   Kevin



I have two dyno sheets for Bridgeport 12As showing 212.8 HP and 218.2 HP
at 7,500 RPM.

At 6,500 RPM (cruise)? 173.3 HP. The second engine was not dynoed that low.

Best torque is 154.3 foot pounds at 7,800 and 229.4 HP. and the other is
149.2 foot pounds at 7,600 RPM and 216.2 HP.

The irons are interchangeable with 13Bs and the center iron ports on the
last 12As were much better than the 13Bs, so if you are building your
own manifold anyway drop in the 12A center iron for a stronger 13B.

Lynn E> Hanover


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