Re Volvo Penta 280 GM 350

[elahuta]

What type of vortec heads? (Cast, Steel, Aluminum) I curently have 1988 heads with pressed in studs.
Can I run Aluminum Heads? I have an heat exchanger running coolant.
Also, I have a set of 1963 camel hump 2 heads with 202-196 valves rebuilt sitting on my race motor never used with all of the goodies. I know I will have to change the springs.
With the stock cam can I change the rocker duration (it just give me more lift without changing the cam duration)? Or is that a no-no...

Thanks

 

[Rat Capri]

Re: Re Volvo Penta 280 GM 350

you'd be wasting your time using double humps over Vortecs, you'll save a little weight using aluimun but not much else