piston lightening

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piston lightening

Post  STR-LGL-70 on January 25th 2017, 8:44 am

This is for a boss 351 replacement piston not BBF but it should still apply so I am posting this here. I have a nib set of 30 over pistons and thought someone on here would know the approximate cost of weight reduction, or even if it is worth attempting.
Thanks, Sheldon
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Re: piston lightening

Post  dfree383 on January 25th 2017, 10:38 am

If you have a mill and a piston vice you could do a little lightning.

If not and you think you need a lighter piston, I'd sell those and get a modern piston that's lighter, better ring pack etc.
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Re: piston lightening

Post  STR-LGL-70 on February 2nd 2017, 4:15 pm

Thanks dfree,
Mainly concerned w/weight as it relates to rod stress. I also have new "service" 351 c rods with I believe have ARP hardware and trying to use what's on hand. Have most everything to put together a nasty 351C for a '71 boss clone.
Sheldon G
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Little gain

Post  ED468 on February 6th 2017, 2:13 am

Be aware it takes a shit load of aluminum to even take out 5 grams. I bought a set off hear ten yrs ago that was suppose to be slightly used, the TRW .400 domes and two of them where 12 grams heavier. Don't think they where a set lol. Anyway gave up after removing like 2 grams. Now if I didnt care to weaken the piston thats another story.

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Re: piston lightening

Post  Scott Foxwell on February 6th 2017, 9:14 am

I don't think I would just go in and start milling on a set of pistons. I'd send them to someone like Rebco who understands and knows just where and where not to take material out.

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Re: piston lightening

Post  rmcomprandy on February 6th 2017, 12:35 pm

STR-LGL-70 wrote:This is for a boss 351 replacement piston not BBF but it should still apply so I am posting this here. I have a nib set of 30 over pistons and thought someone on here would know the approximate cost of weight reduction, or even if it is worth attempting.
Thanks, Sheldon

The cost would be very objectionable compared with the value of a regular replacement set of pistons.
Just buy lighter pistons to begin with.

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