rebuilt 516
 

I have 1 516 mark IV bowtie / hiperf pass, heads dart pro 1 325 cc 2.30 valve intake ,1.880 valve exhaust . I need to talk to someone about a good cam selection , with lifters and spring please and thank you

Call Bob Madara

Marine Kinetics - High Performance Marine Engine Shop

Call Eddie Young at Young Performance Main - Young Performance Marine

I would say a Crane 168741 cam and Isky 8005 springs.

Bob lol

Get all your info and specs in hand and start calling cam manufacturers most will punch it in and see where you should be, need something that is not a drag car setup, then chose what averages out and most likely there is a shelf cam for you. Having head flow numbers of what they actually flow is a great start, not what the internet says.

Look up Rob Vintage chromoly on here, he has a stout 512... 680 HP....

What kind of power you hoping to make? Single engine boat? What exhaust?

échappement à voir après moteur de reconfiguration, monomoteur oui, 600 chevaux

change your key board to Engrish.......that's 600 Pony's , do you have to get your parts from the States ?

exhaust to see after rebuilt engine, single engine yes, 600 horsepower