question for engine builders
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Joined: Sep 2009
Posts: 3,569
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From: deland,florida
S&S .520,real nice torque cam.its a bitch,most low rpm/torque cams are for stock compresion.redshift had made a cam a while ago we used alot,i think it was a .653,but its been a while since they made it
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Road Warrior
Joined: Oct 2009
Posts: 1,251
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look at that, you learn something every day, i guess that must a be a older grind, because none of my catalogs show that 7, internet shows its for stroker motors..hmmm, Well on the contrary, bigger is better when you do it correctly, When you have enough head,compression,gear and bike weight figured in, all that has to support a camshaft, One things ive noticed with harley guys, they like to throw gigantic duration, high overlap cams in with next to no compression, thats a bad thing, ive personally done it with a small block chevy in a 4x4, and it was turd,
Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
look at that, you learn something every day, i guess that must a be a older grind, because none of my catalogs show that 7, internet shows its for stroker motors..hmmm, Well on the contrary, bigger is better when you do it correctly, When you have enough head,compression,gear and bike weight figured in, all that has to support a camshaft, One things ive noticed with harley guys, they like to throw gigantic duration, high overlap cams in with next to no compression, thats a bad thing, ive personally done it with a small block chevy in a 4x4, and it was turd,
Yea, that why I've had so many questions... My bike runs great now. But, if I could get a larger cam that matches the CR and heads better, I just may do it..
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Road Warrior
Joined: Oct 2009
Posts: 1,251
Likes: 1
Yea, i hear ya, I just looked at your other thread, The limiting factor on your build is the compression, 9.5 to 1 is a good middle of the road compression, but if you going to do a longer duration camshaft, youll need to bump that up with another piston or having the heads decked, or both...lol.
A little smaller lift and a longer duration(266) and It starts better. I just put my EV7 back in today.
Last edited by stevelonewolf; Jan 16, 2010 at 02:49 PM.
I was referring to the Andrews EV7. I just found the paper work with the specs on my EV7.
Timing Duration Lift valve lift
31/55 266 .560 .249
59/27 266 .560 .223
Timing Duration Lift valve lift
31/55 266 .560 .249
59/27 266 .560 .223
Last edited by stevelonewolf; Jan 16, 2010 at 03:18 PM.
Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
Yea, i hear ya, I just looked at your other thread, The limiting factor on your build is the compression, 9.5 to 1 is a good middle of the road compression, but if you going to do a longer duration camshaft, youll need to bump that up with another piston or having the heads decked, or both...lol.
What are you noticing on detonation with the high comp? Is it bad or can it be easily dealt with, with pump fuel?
Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
Looks like an impressive package..
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Road Warrior
Joined: Apr 2007
Posts: 1,952
Likes: 15
From: Senoia, Ga., by way of Miami, Fl..
