Jack_Vines Posted July 13, 2006 Share Posted July 13, 2006 Wanted - 1956 Senior series 374" V8 pistons. Please reply with condition and price. Link to comment Share on other sites More sharing options...
Guest dave327 Posted August 1, 2006 Share Posted August 1, 2006 I think I have 7 that are fine and one that may not be. They are all still on the rods. Interested? Offer? Link to comment Share on other sites More sharing options...
Joe Block Posted August 1, 2006 Share Posted August 1, 2006 Have you check chevy pistons, they come in all kinds of heights and diameters, there should be a cross over available. Link to comment Share on other sites More sharing options...
Jack_Vines Posted August 2, 2006 Author Share Posted August 2, 2006 Been there, done that long ago. Our Packard V8s are unique as far as using the tallest pistons in the modern world. Nothing in the Chevy catalogue is even remotely in the ball park. The only Chevies with a 4.125" bore size are the 400" small block which uses 1/2" shorter compression height. There is one odd-ball GM 366" truck piston which gets within .100", but still not the answer.It is theoretically possible to use an old '63-70 Chrysler 413" piston and bore out the rod to fit the larger Mopar pin. The result will run, but will be too far down in the hole for good squish and will lower the compression too much.thnx, jvthnx, jv. Link to comment Share on other sites More sharing options...
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