Quote:
Originally Posted by Woodfin
A fellow has contacted me in question about rebuilding a 1971 Olds Cutlass 350 original engine. He wants to increase the performance within reason. I know the customer and his car and his style so a factory iron head will be the best choice. It there a factory head better that the 1971 350 model? And is such a head easily available. I would like to make him a 400 horse package.
Who is in the know with Olds 350 heads? And for that matter, 350 Olds engines in general.
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Keep the 147 castings and put the larger 2.07" intake and 1.625" exhaust valves with some porting. Install rocker arm studs and guide plates and put some Harland Sharp roller rockers which have the proper geometry for Olds engines. Other brands use a Ford rocker that does not have the proper geometry.
The best intake is either the Performer RPM or Holley Street Dominator if you can find one.
I would also recommend the use of a hydraulic roller with Johnson Lifters, for Pontiac/Oldsmobile applications. The Chevy lifters have the oil band in the wrong location.