Cam Change? Your thoughts... : V-Twin Forum: Harley Davidson Forums

93 FXR · 06-22-2009, 11:34 AM

Lot's of cam talk here recently...thought I'd chime in.

I currently run an Andrews EV-3.
Looking for a bit more out of my build..(specs below)
Running Screamin Eagle Heads, Adj. Pushrods, lifters, etc. etc.
Being the EV-3 is only a .495 lift, I'm thinking of bumping that
up a bit for better performance.
I'll freely admit, I spend zero time at the drag strip, and I'm just looking for some better streetable performance. Not that the
bike is a slug, it runs quite well, actually. I'm just sure there is much more potential I'm missing out on....
I've heard the Red Shift 575 is a dynamite cam, and I'm sure they're are plenty of others.
Your thoughts and suggestions would be appreciated.

Hillside · 06-22-2009, 12:11 PM

By rights, the 3 cam should be a good choice(especially that you already own it) as long as you have proper compression, and the heads are working.
But if looking for more, a Wood 8, will certainly bring out the barbarian in that engine.
90/90 is well within reach.

Scott

93 FXR · 06-22-2009, 12:35 PM

Quote:

Originally Posted by Hillside

By rights, the 3 cam should be a good choice(especially that you already own it) as long as you have proper compression, and the heads are working.
But if looking for more, a Wood 8, will certainly bring out the barbarian in that engine.
90/90 is well within reach.

Scott

Thanks Scott.
Question...would there be any modification needed to the heads
with the Wood 8 cam? springs, clearance, or just install and go....

Hillside · 06-22-2009, 12:48 PM

Springs need to accomodate the.590" lift, as well as 10.7-8 compression.
Scott

93 FXR · 06-22-2009, 12:56 PM

Thanks...

What can the SE heads accept?
I've heard they will take up to .575 no problem
before any modification is necessary.

Is this accurate?

Hillside · 06-22-2009, 01:48 PM

Do not assume.
It is always best to check, as seat pressure, installed height, and nose pressure, are very important to insure the outcome.

Scott

90Harley · 06-23-2009, 06:32 PM

I recently changed out an EV3 for the same reason you want to, the motor has more. Off the recommendation of my machinist, he built it this time, I went with the Kuryakyn ER2 (link below). It has a .560 intake and .510 exhaust with .256 and .252 duration. My understanding is the shorter exhaust duration and lift will provide torque. I only have about 550 miles on the build and have not had it over 3700 or so a couple times but rolling on the throttle 2 up to pass I can tell you I will be very happy when I open it up. Much more torque than I had before. My understanding is the cam is ground by Andrews which puts the quality question to rest for me anyway.
http://www.kuryakyn.com/index.cfm/go.../111/IMID/1602

mtkawboy · 06-23-2009, 07:02 PM

Id leave the cam and spend the money on some head work even just some seat pocket work makes a big difference. I really like the Comp Cams 3030, 530 lift 240/240 duration especially with the head work. I run a set of Mackie street ported 80 inch heads

Hillside · 06-24-2009, 07:05 AM

The family of Andrews EV 27, 3, 46, will all show about 80/90.
The Wood 6 will also do it as well, but it seems that it hits like the 27, and carry's out like the 46. The S&S .510 may do it, but it'll be late.
The Wood 8 will go 90/90, reliably, and historically shows fuel economy in the high 40's, low 50's.

Scott

4XLT · 06-24-2009, 12:27 PM

man i wish the 6-H would give me 40 mpg

but i guess thats what i get for wanting to go faster lol

ClassicRider · 07-17-2009, 03:49 AM

93 FXR~~

I would love to see some photos of your bike from the muffler side since you are running what I am considering modifying my FXR2 to, that being the Super Trapp 2-1. IS yours chromed and do you have the heat shields? How long have you been running the Super Trapp 2-1?

As for your cam modification.....your bike is running well....but you want a bit more out of it....I assure you, you aren't riding in the mountains then with lots of curves....if you were you would leave your bike alone....because believe me you have enough power....my bike scrapes as it is with only a cam modification.....anyway if you bring that out to the mountains be careful you might find yourself getting carried away with all of that power with no where to go.....

I certainly wouldn't even think about running a cam with that much lift ie: 570 or so, I had a 2003 Dyna Low Rider with 10.25:1 compression, 95" set up with S&S 570 cams and the bike was a mild "monster" when you consider the weight and low stance of the bike and it was sure fun to ride....but I sold it and much prefer my 1999 FXR2 for handling and overall performance.....think twice before you get yourself down a pathway you wish you would have felt more constraint with.....I certainly am not a fan of running the kind of compression you are talking about with these evo engines.....but hey that's why we all own what we want to own....

Regards,

"Classic"

93 FXR · 07-18-2009, 01:36 PM

Quote:

Originally Posted by ClassicRider

93 FXR~~

I would love to see some photos of your bike from the muffler side since you are running what I am considering modifying my FXR2 to, that being the Super Trapp 2-1. IS yours chromed and do you have the heat shields? How long have you been running the Super Trapp 2-1?

As for your cam modification.....your bike is running well....but you want a bit more out of it....I assure you, you aren't riding in the mountains then with lots of curves....if you were you would leave your bike alone....because believe me you have enough power....my bike scrapes as it is with only a cam modification.....anyway if you bring that out to the mountains be careful you might find yourself getting carried away with all of that power with no where to go.....

I certainly wouldn't even think about running a cam with that much lift ie: 570 or so, I had a 2003 Dyna Low Rider with 10.25:1 compression, 95" set up with S&S 570 cams and the bike was a mild "monster" when you consider the weight and low stance of the bike and it was sure fun to ride....but I sold it and much prefer my 1999 FXR2 for handling and overall performance.....think twice before you get yourself down a pathway you wish you would have felt more constraint with.....I certainly am not a fan of running the kind of compression you are talking about with these evo engines.....but hey that's why we all own what we want to own....

Regards,

"Classic"

Classic,

Here's a fairly current photo of the right side:

Mine is stainless, and and I do not have the heat sheilds.
I've been running it since the beginning of the year, and I'm quite pleased with the pipe.

Yes, it runs very well. My thoughts on the cam change are simply this....looking at my build, which is mild, in my opinion, there must be a better choice than the EV-3.
Mind you, I'm not unhappy with the performance, but there is probably a cam which is better suited for the mods which I have done.