Air Flow Research Heads
08-06-2004, 08:28 PM
#11
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Re: Air Flow Research Heads
So has anyone used the stock 454 mag closed cooling system with a 540?
Vinny, I think your concerns with rev valves have been answered. If OSO members haven't done it no one has.
Vinny, I think your concerns with rev valves have been answered. If OSO members haven't done it no one has.
08-06-2004, 09:00 PM
#12
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Re: Air Flow Research Heads
Dave,
You're right. There is a wealth of knowledge here. Someone here has done just about anything you can think of. I am leaning toward going with the 315 cnc heads. On my desktop dyno, they will make 670 h.p.@ 5500 and 685 ft lbs torque @ 4500. That's good enough for me.
What's the benefit to having the water passages " Hard Anodized "? I assume it will delay the corrosion process of salt water..
Also what's the advantage of copper berrylium seats?
You're right. There is a wealth of knowledge here. Someone here has done just about anything you can think of. I am leaning toward going with the 315 cnc heads. On my desktop dyno, they will make 670 h.p.@ 5500 and 685 ft lbs torque @ 4500. That's good enough for me.
What's the benefit to having the water passages " Hard Anodized "? I assume it will delay the corrosion process of salt water..
Also what's the advantage of copper berrylium seats?
Last edited by Vinny P; 08-06-2004 at 09:30 PM.
08-06-2004, 09:09 PM
#13
Re: Air Flow Research Heads
Monty,
Could you post the exhaust flow numbers on your heads too please? It looks like the AFR heads to a really nice jump in the flow numbers with the Del West valves. Is there supposed to be anything special about the Del West valves that causes the AFR heads to flow better?
Could you post the exhaust flow numbers on your heads too please? It looks like the AFR heads to a really nice jump in the flow numbers with the Del West valves. Is there supposed to be anything special about the Del West valves that causes the AFR heads to flow better?
08-06-2004, 10:19 PM
#15
Re: Air Flow Research Heads
Originally Posted by zt260
So has anyone used the stock 454 mag closed cooling system with a 540?
Vinny, I think your concerns with rev valves have been answered. If OSO members haven't done it no one has.
Vinny, I think your concerns with rev valves have been answered. If OSO members haven't done it no one has.
08-07-2004, 09:58 AM
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Re: Air Flow Research Heads
Vinny,I built a 548(9.7 cr,AFR 315,650hp,680 tq pulling all accessories & wet headers))My boat didn't come with a closed cooling system so I looked in the aftermarket.Mine works great.The heat exchanger is huge (4x32 inches)Call me at the shop Monday & I'll give you the name.1.504.486.7070 BOB
08-07-2004, 11:00 AM
#18
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Re: Air Flow Research Heads
Originally Posted by RLW
If you want an indorsement in regards to REV Valves, Dean Nickerson is the person who clued me in on their existence. I would definitely go with the hard anodizing. It is a $189.00 upcharge.
My engine builder went with the AFR 305cc heads with the CNC'd chambers on my 9.2:1, Dart based 540. Manley valves. Cam is a Comp with 236/[email protected] duration, LSA is 112 and valve lift is .630/.635. 1050 Nickerson carb with a single plane Merlin intake.
706 hp@5400 rpm and 700 ft/lbs@5000 rpm on the dyno.
Hope this helps.
Russ
My engine builder went with the AFR 305cc heads with the CNC'd chambers on my 9.2:1, Dart based 540. Manley valves. Cam is a Comp with 236/[email protected] duration, LSA is 112 and valve lift is .630/.635. 1050 Nickerson carb with a single plane Merlin intake.
706 hp@5400 rpm and 700 ft/lbs@5000 rpm on the dyno.
Hope this helps.
Russ
08-07-2004, 11:05 AM
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Re: Air Flow Research Heads
Bob280,
Thanks for the help. I will call Monday. Or if you can, just P.M. me the information.
Vinny
Thanks for the help. I will call Monday. Or if you can, just P.M. me the information.
Vinny
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