Old TRW Piston Challenge

[Jeff Ferrante]

A few days ago I came across a market place ad selling some leftover auto parts supply house stuff. I bought it all really cheap. There were 25 complete piston sets mix of V4, V6 and V8, some oil pans, nice balancer pullers, ingersoll Rand ratchets, valve seals, push rods, ARP sets. In the mix was an old (I think) set of TRW forged pistons that I spent two hours on google and cant identify. Its only a small box of four, Part number L 3090F. 30 over. I have attached some pictures if anyone wants to take up the challenge of trying to identify them.

 

[AUSTA]

4.057 standard 4.077 30 over could be oldsmobile

 

[Steve340]

I do not know what they are, but a box of 4 would probably be a 4 cylinder engine.
From past experience if they were for a V8 or whatever engine, the box contains all the pistons needed.
By the way those are cast pistons in your pics.

 

[Chryco Psycho]

I kept my TRW catalogs until I moved to Panama so I am sorry but I cannot help .

 

[Jeff Ferrante]

I do not know what they are, but a box of 4 would probably be a 4 cylinder engine.
From past experience if they were for a V8 or whatever engine, the box contains all the pistons needed.
By the way those are cast pistons in your pics.

Thats what I thought as well. But had another box of 4 that turned out to be the left bank of a Buick V8 (307)

 

[Jeff Ferrante]

Solved: I also got a bunch of catalogs, There was an old Badger catalog with an interchange index.
It is the right side for 1978 to 1985 Olds Diesel.

 

[Jeff Ferrante]

I kept my TRW catalogs until I moved to Panama so I am sorry but I cannot help .

Thanks for the catalog reference, I forgot they were still in my car. Found an interchange number

 

[Chryco Psycho]

Great !