Originally Posted by Gtxxjon
My moparmate had an ex engine-masters 470ci with 572-13 heads.

They were designed for the 4.500 bore but were fitted to a low-deck 400, 4.375 bore with a 470ci stroker-crank.

I assume they made some for the 4.250 bore 383 cube engines and moved the valves inwards to miss the bores?

Good for 1000hp 'they say' my mates 470 cube made 700 N/A... drive


That seems kind of weird and odd. A pump gas 470 can make 700 hp with Trick Flow 240 heads.