Hi my dads owned alot of datsuns in his time and he told me that he bought this 120y race car and it had a a12 motor in it and it had v8 vavle springs out of a holden would that make the car rev to 13500 rpm?

Sure, and Formula 1 engines rev to 18,500. They use air valves instead of steel spring valves.

I think dad added 5000 rpm to the story

What are his fishing stories like ?

i caught a fish ttttthhhhhhhiiiiiisssss bbbbbiiiiiggggg! hehehe

maybe the block was made from sunshine and lollipops, and it ran on rainbows and smiles...

bahahahaha thats funny fellas... there is no way it would ever rev that far sorry dude.

Of course it'd rev to 13,500rpm.


Check out Marlin Tomlinsons 1000cc A10, that pulls 12000 pretty easy.

Nope... I don't believe it

Its like the NA A series that made 146hp ... but no dyno sheets

A-series can-do. 258 HP at the wheels:

With enough money anything is possible.

Is it likely that it went to 13 500 and still made power? I doubt it, port sizes alone would need to be MASSSSSIVE to support that type of flow, with that type of build the last think you would worry about is using some old V8 single spring per valve setup.