I recall you saying they both were within a few HP also. i think Bob stretched the limits for out of the box 325's and custom ground cam. What intake did you end up with? Example of a 540/650hp package Gellner was doing was out of the box 310's, dart intake, 4150/1050 carb. Without full CNC heads or porting to get close to and above advertised flow numbers I would think 700 would be pushing it. I am going fully ported heads with raised floors etc including intake work at 10.5:1 comp and custom ground cam on 555 builds and targeting 700 plus hp @ or under 5,800. I won't leave the dyno til I get it. I wonder how many 540's are out making 700 hp under 6k on pump gas are out there and if so what their recipe is?

yes both engines were within 3 hp, that was my building them identical, not Bob.

As far as 700 HP or close with 325 AFR heads, they have the cnc chamber and bowl work done, and are also a 325CC head easily a 700 HP head, as far as the cam? he is way off and it showed on the dyno, intakes are pro comp from last engines, with 1050 carbs, Cigrocket built 540's with 315 heads and a 741 cam and made 685 hp, so I could have done much better, wish I knew then what I knew now... all I got was less speed out of my boat and a cam that's going to destroy stuff....

So Tim, when are you gonna swap to a 741 or 651 cam or similar? What comp are your 540s?

Probably when I refresh, or have an issue... I will re think entire top end. They are 9.5:1

So how does it run out?