I.D. this piston please

[Wheels]

this is a 30 over piston that came with my 1970 TA block
what can anyone tell me about it, only #s inside the
piston were - 26699 and these ones on the top L2316 0.30

Thanks all.

 

[RustyRatRod]

TRW replacement for 68-71 340.

 

[Wheels]

any idea what compression ratio would be with factory X heads?

 

[Rocky_JS]

Speed pro pistons L2316F .030
Compression ratio is figured with 65cc heads.
Forged Piston 2 Valve Relief Flat Top
Specifications
Bore Diameter (in.): 4.070
Compression Ratio: 10.1:1
Dish / Dome Volume (cc): -7.5
Pin Height (in.): 1.84
Ring Package: 5/64 5/64 3/16
Rod Length (in.): 6.125
Stroke (in.): 3.313
Weight (grams): 735
Wrist Pin Type: Floating
Deck height - .018

 

[RustyRatRod]

Yeah. Whatever the book says the compression was for the 68-71 340. I think it was 10.2, but rest assured, it blueprints lower than that. The only way to know for sure is to measure.

 

[RustyRatRod]

Yeah what he said. lol

Speed pro pistons L2316F .030
Compression ratio is figured with 65cc heads.
Forged Piston 2 Valve Relief Flat Top
Specifications
Bore Diameter (in.): 4.070
Compression Ratio: 10.1:1
Dish / Dome Volume (cc): -7.5
Pin Height (in.): 1.84
Ring Package: 5/64 5/64 3/16
Rod Length (in.): 6.125
Stroke (in.): 3.313
Weight (grams): 735
Wrist Pin Type: Floating
Deck height - .018

 

[Wheels]

Thanks guys much appreciated.