Captainkirk's Duster project

67 prostreet gt said
Are those the Mr. norm Hi Compression Pistons???

Yup.
TRW L-2322's...rough-cast 13:1, 12.5:1 with normal 340 chambers. Mine were cc'd open to give it a more "reasonable" 11.5:1 back in the day. I'm thinking I may have to shave a point (or more) off that to run on today's pump gas.