03-13-2011, 10:12 PM | #57 | |
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Lope is created by LSA....what you're hearing is the valves both being open at the same time. You can retain power with a cam and a blower by using a narrow LSA to limit the amount of time the valves overlap. I'm on a 113 LSA.....sounds great, but not what you want with a blower. Bigger headers hurt boost....same thought process, air is leaving in more volume...that's why you have to swap the pulley out to get back boost lost with headers. |
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03-13-2011, 10:12 PM | #58 |
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Power is better with the right cam, boost in the cylinders makes more power, and the lope is related to the smaller overlap, which is ok/good for NA motors...like someone else mentioned, with boost, and big cams, be sure to upgrade the springs, valves and pistons kissing is a death sentence...
As an aside to the springs comment, bear in mind these are pretty big valves in these heads, so, think of an umbrella in a hurricane... Big valves and big boost require schwzeneggar springs... I'll be Bach...Is knot a tumah
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If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley
Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough... |
03-13-2011, 10:14 PM | #59 |
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03-13-2011, 10:16 PM | #60 | ||
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Ya, I have 1 3/4 and it may actually be good so as to not lose as much boost when I cam it. It would seem anyway. Ya, I have to do some more reading. But, again, if I just pull the heads, It becomes much easier. |
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03-13-2011, 10:21 PM | #61 |
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You'll need bigger headers for that cam. Yes, you will produce less boost but make more power. Less boost = safer
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03-13-2011, 10:21 PM | #62 | |
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My Whipple and cam were installed at the same time. The 4" pulley that ships with the Whipple is typically supposed to produce 9lbs of boost. Mine was at 7.3lbs. I had headers, catback exhaust, intake and a cam. Was the drop just a combination of all of the above? |
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03-13-2011, 10:22 PM | #63 | |
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Don't have to worry about all what... The VVT, or the LSA and duration... VVT goes away, then get a suitable cam for boost... My cam is a 121 degree separation, awesome sounding, and works great with boosted motors...
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__________________
If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley
Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough... |
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03-13-2011, 10:22 PM | #64 | |
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03-13-2011, 10:27 PM | #65 | |
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About a year ago, Someone did a good write up, not specifically about this, but this was included...wish I could remember who, might have been Ted...
__________________
If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley
Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough... |
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03-13-2011, 10:29 PM | #66 |
Bayoucitymusclecars.com
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Hey Randy...it may not have as much lope as mlee's, but I'm pretty happy with my mild VVT cam.
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03-13-2011, 10:30 PM | #67 | |
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03-13-2011, 10:30 PM | #68 | |
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03-13-2011, 10:31 PM | #69 | ||
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Worry about LSA. Because it will be constant with a non-VVT cam. With a VVT cam it can change, right? |
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03-13-2011, 10:32 PM | #70 |
Bayoucitymusclecars.com
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