Another 540 Cam Thread?
 

I would like to some opinions on my engine builder's choice of cam for a 540 Marine engine.
It is a 9:1, maybe 9.2:1 compression ratio.
Using AFR 315cc CNC Ported heads. Also has Dart Big M block, Callies crank, Lunati rods, J&E pistons, Crower rockers.
The cam has these specs:
112 LSA
236/240 @ .050
.630/.635 Valve Lift
It is a hydraulic roller Comp Cam. Not sure if it's off the shelf or custom grind.
Want to use a 1050 Carb with single plane intake and Stainless Marine Long Wet Risers exhaust.
Any feed back is appreciated.
Thanks, Russ Withiam

Sounds very close to the 741 and that seems to be the cam of choice for 540s.:eureka:

I built a pair of 540's this past winter that are almost identical to what you're putting together - same block, same heads, same compression ratio, etc. The only difference is that I went with 850cfm marine Holleys on Victor Jr single planes. I used the Crane 741 cam and made ~690hp @5700rpm and ~670ft lbs @4600rpm. You'll probably gain 20-30 hp/tq over that with the Dominator's.

dunno about the wet exhaust. might wanna go dry...

what about a good flat tappet Hydraulic??

Thanks for the feedback.
Already have the 1050 and the Stainless Marine Exhaust. Dry pipes would be to loud where I boat. Looking at a Victor intake based on what somebody had mentioned, in regards to the ports matching up nicely.
Dyno, interesting that you mentioned a hydraulic flat tappet. I really wanted a full roller engine.
I would like to hear from the Toilet Doctor.
McCollinsTn????????

i went the full roller route once before on a 502 I had and didn't think it was worth the extra cost and the maintenance (lash) I really dont try to squeese every hp out of my stuff, whats a good choice for the flat tappet route? there has got to be one....

Hydraulic rollers require no more maintenance than a flat tappet hydraulic. They also out perform a flat tappet in all aspects.
Are you reffering to a solid roller?
Confused:confused:
Dave

Yes I had full roller....lots of cost in a hydraulic roller set and then do it twice with twins

Yes, $800 worth of lifters in your twin case.
I was thinking that RLW was already setup for HRs.
;)