cams for dyna
Grand HDF Member
Joined: Jun 2013
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From: Iowa
I think the Andrews 57 would do you right. The 48 is meant for 80-88" motors with no bump in compression, but you have a 103" with 9.6:1 compression so the 57 will do well. You will want to put in the 4 degree cam advance as well to get a bump in your corrected compression.
Grand HDF Member
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From: Iowa
Also, they both have their highest torque between 3K and 4K, with similar power below 3K, the 57 just maintains more power in the higher rpms and allows for bumping your compression if you would ever do a big bore.
Last edited by Jay Guild; Oct 20, 2017 at 09:30 AM.
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Seasoned HDF Member
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From: pacific northwest
that is a good idea to keep in mind . also notice that the 37's are the same spec as the 57 with exception of the lift. am wondering if with stock heads one would get about the same effect with the 37 without the higher lift?
Grand HDF Member
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From: Iowa
I have the 37 in my dyna and I kind of wish I had the 57, but you have a 2014 which does allow for the higher lift on the 57. It allows you to pump a little more gas in for every rev and I have seen some slight improvement in performance with the 57 over the 37. The 37 is for 99-05 dynas though that can't take the .560 lift of the 57 so between the 37 and the 57, if your heads are 06 and later heads then go with the 57.
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From: Clearwater, Idaho
No, because the 57 will open the valve to the 37's max lift figure (.510) a little earlier than the 37 will, and will hold it open that amount (and higher) a bit longer. This has the effect of increasing the duration a small amount which has benefits even if the heads can't utilize the 57's max lift of .560". Assuming, of course, there are no reversion issues as a result of the higher lift.
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Seasoned HDF Member
Joined: Jun 2014
Posts: 5,466
Likes: 6,333
From: pacific northwest
No, because the 57 will open the valve to the 37's max lift figure (.510) a little earlier than the 37 will, and will hold it open that amount (and higher) a bit longer. This has the effect of increasing the duration a small amount which has benefits even if the heads can't utilize the 57's max lift of .560". Assuming, of course, there are no reversion issues as a result of the higher lift.
Andrews .560) as the 57. as I stated, most of my riding is at lower rpm ranges, but not to say that I never like to crack the throttle wide open at times on an open strait away to get the thrill of acceleration. will have to do a bit more thinking about the 48 or 56. is the higher lift likely to create more valve train noise?
once again thanks to all for the helpful reply's
Last edited by MRFREEZE57; Oct 20, 2017 at 06:10 PM.
Road Master
Joined: Mar 2017
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From: Chicago
I know this subject has been beat to death, but I have a noisy lifter in my 14 low rider at 28k miles so already have a set of S&S premiums and set of quickee push rods to install.
being will be this far into it would like to do a cam swap. I ride 2 up a lot and take a trip about 1 time a year so are loaded to the max.
most of my riding is between 2000 to 2800 rpm, rarely go over 3k as I like to use 6th gear. am thinking a lot on the andrews 48H cams as they say they gave a lot of torque in this rpm range and still are decent if you want to roll it on to pass. currently have an S&S stealth AC and supertrapp exhaust along with a PV that fuel moto loaded a program for current set up. by chance are there any other dyna riders with a similar set up and how do you like it?
would really appreciate any feed back.
being will be this far into it would like to do a cam swap. I ride 2 up a lot and take a trip about 1 time a year so are loaded to the max.
most of my riding is between 2000 to 2800 rpm, rarely go over 3k as I like to use 6th gear. am thinking a lot on the andrews 48H cams as they say they gave a lot of torque in this rpm range and still are decent if you want to roll it on to pass. currently have an S&S stealth AC and supertrapp exhaust along with a PV that fuel moto loaded a program for current set up. by chance are there any other dyna riders with a similar set up and how do you like it?
would really appreciate any feed back.
andrews 48h is more suited for a stock 96 with stock compression