08-02-2011, 06:47 AM

badlefthand badlefthand is offline

Senior Member

Join Date: Aug 2007

Location: Fl

Posts: 187

Piston size ID 389

Have a 59 SR 389 that I tore down ,Low comp. Dished piston GM#532289. I think std bore but have no way to measure. My Thanks, Machine shops are far away here. Last time I went through this one guy brought out a 12 foot tape,said "yup 4 inches."so drove to a couple machine shops 40 miles away and got a differant measurement from each WTF. Have checked web and nothing.Live on a pretty close budget to buy tools to check size.

Last edited by badlefthand; 08-02-2011 at 07:10 AM.

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