What heads/intake/cam setup for most hp out of a NA 540??
01-22-2010, 08:52 PM
#21
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Join Date: Apr 2004
Location: Charlotte, NC
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Tight lash solid roller... I checked the lash about mid season and all seemed good so I ran it for the rest of the season as is/was, then pickled for the winter. I'll check/adjust the valves beginning of this season. I'd say check the lash every 25-30 hrs. If the lash grows by more than a thou or two, there's a problem. Your 26 Velocity should be a rocket with or without a solid roller if you're in the 700 hp neighborhood.
I have Jesel sportsman type shaft rockers. Don't get those, get the Pro's. Or, talk to Bob about T&D's. He'll steer you right.
I have Jesel sportsman type shaft rockers. Don't get those, get the Pro's. Or, talk to Bob about T&D's. He'll steer you right.
01-23-2010, 07:05 AM
#24
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Yes they are the Pro Systems Marine 1150's 3 circuit. When I ordered them for the application I did not know I would be getting the 3 circuit carbs. I fought a rich condition at about a 30 percent throttle position and found it to be the intermediate circuit. I talked to Patrick about it and after blocking off the intermediate circuit and changing the size of the high and idle air bleeds I got a very nice fuel curve and picked up HP and TQ throughout the RPM range.
02-16-2010, 08:02 AM
#25
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Yes they are the Pro Systems Marine 1150's 3 circuit. When I ordered them for the application I did not know I would be getting the 3 circuit carbs. I fought a rich condition at about a 30 percent throttle position and found it to be the intermediate circuit. I talked to Patrick about it and after blocking off the intermediate circuit and changing the size of the high and idle air bleeds I got a very nice fuel curve and picked up HP and TQ throughout the RPM range.
