Andrews 37H not enough anymore
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Grand HDF Member
Joined: Jun 2013
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From: Iowa
Andrews 37H not enough anymore
My current build is an 06 Dyna with big bore 97" cylinders, 3cc domed pistons, SE high flow intake, Fat Cat 2 into 1 exhaust, Andrews 37H cams, S&S Premium lifters and adjustable pushrods, the Fuel Moto Level B CNC ported heads , and an HPI 51mm throttle body with 4.9 gps injectors . I have upgraded the clutch with a heavy duty spring, a Baker Kevlar extra plate clutch pack, and an AIM VP84 clutch plate. Final drive changed to 30/70. Static compression at 9.98:1. The Andrews 37H has performed well but I recently added the new throttle body, injectors, and the ported heads and feel I should be able to get more out of the build especially considering I have plenty of lift I'm not taking advantage of with the 06 heads. I cruise quite a bit but am very throttle happy on acceleration. I am looking at the Woods-777 but am open to any suggestions from people who cruise but still suffer from happy wrist. I had thought about going to the Andrews 57 just to get the lift, but looking at dyno charts they don't seem to perform as well in Stage 4 builds.
Seasoned HDF Member
Joined: Dec 2005
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From: poway
The 777 is a good cam but it needs more compression. Tman 590, the newer one with the CR set to 10.8 would be a lot more fun. I ran an 02 RK with 95 ci at 10.8 and a Crane H290 for about 45000 miles. Bike pulled strong. The H290 was hard on lifters tho. Ended up replacing them about every 10K. I ended up going to a Andrews 55. Lost a little low end but did pick up some HP up top. I went to a set of 0.040 KB pistons when I rebuilt the top end which helped on the low end and seemed to give a little boost. The newer Tman590 is really close to H290 specs.
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From: 48.067222,12.863611
Does your builder happen to be in Des Moines area?
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Grand HDF Member
Joined: Jun 2013
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From: Iowa
Completely different bikes as my 107" all bore was on a 2003 RKC. I had R&R stage 4 heads and first cam was Andrews 67. The static on that bike was 10.83 and the 67 was a dog until 3200 RPM. Might be much better on a light bike. IMO, that cam needs even more compression that 10.8. Of course, it screams to the redline once it hits. I replaced it with old TMAN 590 and night and day better. Hit at about 2200RPM and ran out 99 percent as hard to the redline.
Does your builder happen to be in Des Moines area?
Does your builder happen to be in Des Moines area?
Road Warrior
Joined: Aug 2007
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From: South Australia
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Elite HDF Member
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From: 48.067222,12.863611
He loves that 67 cam. You shouldn't. Ask me how I know.....
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Elite HDF Member
Joined: Jul 2007
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From: 48.067222,12.863611
I love andrews cams too, but the 57 is overshadowed by similar cams. The 57 reminds me of a camry. The 67 reminds me of a ferrari- tough to harness and use all that's there without a ton of compression. There are much better cams than the 67 for most applications. Again, you have a light bike so it's not a bad cam, just make sure your compression is high enough (10.8 IMO at a minimum).