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Piston Info needed:


Mel

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I have a question for you motor heads out there!

 

I was in the garage and found an old set of TRW pistons

part #L2417F. They should be for a 350 Chevy, but I'm not sure.

 

I'm having a hard time finding any spec's on TRW pistons. Any of you machinist have some old books with TRW pistons in it?

 

At best guess these are from around 94 or 95... maybe.

 

Just wanted to know what they are b4 I trash them.

 

Thanks in advance,

Mel Krauss

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Mel,

They are listed as 350 pistons, and they'll get ya about 9.9 -1 compression on a 64cc head, and about 8.8 on a 76cc head. Varies slightly with deck, gasket, etc.

One of the engine builders on this forum can get a lot more technical than I can about these, but I found you the basics.

 

How's the new car coming along?

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Tom,

Thanks for info, I think they weighed about 650 grams or so...

man heavy for todays pistons! The frame is close to complete, working on the cage now. Maybe after Easter or so. We're not gonna hurry it.

 

Jim,

They have 1 long valve relief. Heck this might have been what I ran back when u were in the street stocks!

 

Thanks for all the info.

Mel Krauss

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Mel,

 

That was one of the required pistons in the Street Stock class of SAS in the early to mid 90's. It was one of three pistons that you could legally run. One long valve relief, floating pins, and yes, heavy by today's standards. I want to say it was 657 grams in .30 over. If you have a whole set you might have something worth selling though.

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