cams??
12-10-2005, 01:51 AM
#4
5th Gear Member
Join Date: Mar 2005
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RE: cams??
I used the b-303 with the 1.7RR's and it pulled very hard after 4000rpm, but the stock cam has better low end power.
from what I heard the e-303 is better for the street, but I have only used the stocker and the b cam.
the e has less duration and more lift, the b has more duration and less lift.
it depends on what your future plans are.
from what I heard the e-303 is better for the street, but I have only used the stocker and the b cam.
the e has less duration and more lift, the b has more duration and less lift.
it depends on what your future plans are.
12-10-2005, 02:25 AM
#6
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Join Date: Jul 2004
Location: North Cacalaky
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RE: cams??
Neither,you don't need a cam with stock heads...trust me i've been there and seen it many times and it is just a waste of money and time...But if you think it will give you more hp then go with a TF stage 1..
12-10-2005, 02:28 AM
#7
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Join Date: Aug 2005
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RE: cams??
ORIGINAL: 90lxrider
duration....??? wut exactly does that mean?? if more better or is more lift better ...??
duration....??? wut exactly does that mean?? if more better or is more lift better ...??
Lift is the height the valve face seperates from the seat... In inches. Higher the number the more the valve opens
Duration is how many degrees the valves are open. Kinda hard to explain, The Duration is in reference to CRANKSHAFT rotation, not camshaft rotation. The cam turns at half the crank speed, so if the cam has a duration rating of 272, that means the cam will be open for 136* out of its full 360* rotation. Most cams are ground so they open quicker than they close.
Im not a pro engine builder, so somebody *correct me if im wrong*, but the way I understand it, is the more duration you have, the higher up the rpm range your power will peak, but if you get a cam with too much lift, you screw up the air flow past the valves which can have a negative affect on performance. Ill leave those details up to somebody who REALLY knows thier ****. Usually the more duration you have, the worse your gunna idle
Jim
12-10-2005, 02:49 AM
#8
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RE: cams??
you really need heads to work with the cam, I actually made my car slower with the b-303 cam.
until I used my nitrous. then the higher duration and lift helped.
I miss my cam, I got my 308 built with the stock cam. I think I will take a couple runs at the track with the stock one, then change to the b cam, and see what kind of differences it makes.
my old motor was worn very bad.
until I used my nitrous. then the higher duration and lift helped.
I miss my cam, I got my 308 built with the stock cam. I think I will take a couple runs at the track with the stock one, then change to the b cam, and see what kind of differences it makes.
my old motor was worn very bad.
12-10-2005, 01:35 PM
#10
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Join Date: Dec 2005
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Posts: 384
RE: cams??
should i use the b 303 w/ the 1.7's or no?
^^^did u use the 1.7 rockers
ORIGINAL: OnyxCobra
Duration is what gives u power.
And with my stock heads a cam makes a huge difference. Just depends on the car.
Duration is what gives u power.
And with my stock heads a cam makes a huge difference. Just depends on the car.
^^^did u use the 1.7 rockers