Testing the 273 on the dyno....

Net peak, per J245
https://www.hamtramck-historical.co...alershipDataBook/1972/72_Plymouth_Specs_4.jpg

Gross peak,
https://www.hamtramck-historical.co...DataBook/1967/67_Plymouth_Engineering0007.jpg
https://www.hamtramck-historical.co...DataBook/1967/67_Plymouth_Engineering0008.jpg