Cam Suggestions for a 540
10-12-2015 | 11:11 AM
#71
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Joined: Oct 2015
Posts: 277
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Comp does have one .420 lobe hydraulic.
I think you dont see big lobe hydraulics much even today, because most guys wanting big lift, dont want a hydraulic, based on experience that they really dont hold up well in an endurance application, even with modern lifters. Kind of like why nobody is making 4 5/8 nodular cranks.
Whos running +700 lift hydraulic roller cams successfully in the marine offshore stuff, even with modern lifters ? Not talking about a dyno pull, or race engine, talking poker run or pleasure engines ? I hoestly dont know. I know of a few who tried it, even with the high end morels , and ended up going back to solids , in bigger power applications.
I think you dont see big lobe hydraulics much even today, because most guys wanting big lift, dont want a hydraulic, based on experience that they really dont hold up well in an endurance application, even with modern lifters. Kind of like why nobody is making 4 5/8 nodular cranks.
Whos running +700 lift hydraulic roller cams successfully in the marine offshore stuff, even with modern lifters ? Not talking about a dyno pull, or race engine, talking poker run or pleasure engines ? I hoestly dont know. I know of a few who tried it, even with the high end morels , and ended up going back to solids , in bigger power applications.
10-12-2015 | 01:30 PM
#73
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Joined: Aug 2011
Posts: 2,733
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From: bel air, md
How about the .903 Morel HR lifter? It will take solid lobe profiles and spring pressures all day with an .810 wheel, has the upgraded axle and bearings and is pressure fed. Not a marine build, but I've had 270#/700# on that lifter to 7800 in a BB Chev. with about .785 lift.
10-12-2015 | 05:54 PM
#75
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Joined: Nov 2004
Posts: 14,100
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From: On A Dirt Floor
Hello Foxwell. And If I'm wrong, that leaves Straub, and he's been banned from here. Oh, you have too, I believe.
cstraubMar 26th, 14, 4:15 PM
Nice numbers on that one Tony. I hope to make the same with this 532CID we have coming up. Your 305's Foxied, 55MM core, Solid roller lobe, Morel .903" hyd lifter, Lance Patton Carb.
Nice numbers on that one Tony. I hope to make the same with this 532CID we have coming up. Your 305's Foxied, 55MM core, Solid roller lobe, Morel .903" hyd lifter, Lance Patton Carb.
10-13-2015 | 09:59 AM
#78
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Joined: Oct 2015
Posts: 277
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How will the valve never shut? Hyd lobe or solid lobe...both have a base circle where the lifter sits at zero lift and the valve is closed. The opening and closing events will be different if you use a solid lobe with a hyd. lifter but closed is closed, zero lift is zero lift.
10-13-2015 | 10:21 AM
#79
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Joined: Jul 2004
Posts: 11,332
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From: chicago
You sure about that? Might wanna talk to someone who actually designs lobes about that
10-13-2015 | 10:37 AM
#80
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Joined: Aug 2011
Posts: 2,733
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From: bel air, md
Oh I'm very sure. Tried it have the t-shirt and it doesn't work. Pre-load the lifter backfire. Compression test 75psi. .005 lash (roughly) idle like a dream compression test 140 psi. Same cylinder.
