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38 coupe · 05-13-2024, 05:51 AM

I'm suspicious that someone shimmed the relief valve spring in the pump you got 75 psi from. You don't need more pressure than the factory 57 +/- setting.
If you have a truly flat surface (in the machinist sense) you can lap the worn bottom plates. Set a piece of wet/dry sand paper on top of the flat surface, add some water, and polish the plate in a figure 8 pattern. The old favorite for a flat surface was a piece of ground plate glass, you had to be careful not to drop anything near it.

The intake and heads are looking nice and clean. Highly recommend using an old head gasket and tin foil (or modeling clay, your pick) to check clearances in the combustion chamber, then surfacing the heads to achieve 0.050 +/- clearance above the pistons. I had a nice looking set of EAB heads to put on dad's engine, one turned out to be warped significantly but cleaned up well with surfacing.

05-13-2024, 05:51 AM	#234
38 coupe Senior Member Join Date: May 2010 Location: South Texas Posts: 2,137	Re: 276 stroker from 35 years of parts I'm suspicious that someone shimmed the relief valve spring in the pump you got 75 psi from. You don't need more pressure than the factory 57 +/- setting. If you have a truly flat surface (in the machinist sense) you can lap the worn bottom plates. Set a piece of wet/dry sand paper on top of the flat surface, add some water, and polish the plate in a figure 8 pattern. The old favorite for a flat surface was a piece of ground plate glass, you had to be careful not to drop anything near it. The intake and heads are looking nice and clean. Highly recommend using an old head gasket and tin foil (or modeling clay, your pick) to check clearances in the combustion chamber, then surfacing the heads to achieve 0.050 +/- clearance above the pistons. I had a nice looking set of EAB heads to put on dad's engine, one turned out to be warped significantly but cleaned up well with surfacing.