Reply With QuoteMy thought, why waste the money for 2-3mph? Again, just my thought.
any thoughts ?
http://img399.imageshack.us/img399/4...4ex2000mn4.jpg (http://img399.imageshack.us/my.php?i...4ex2000mn4.jpg)
these come in powder coat finish / variable colors
http://img399.imageshack.us/img399/7599/dscn2368lv5.jpg (http://img399.imageshack.us/my.php?i...scn2368lv5.jpg)
http://img399.imageshack.us/img399/6...370danaqt5.jpg (http://img399.imageshack.us/my.php?i...370danaqt5.jpg)
http://img399.imageshack.us/img399/5039/31040301xv1.jpg (http://img399.imageshack.us/my.php?i...1040301xv1.jpg)
http://img399.imageshack.us/img399/9066/headershy5.jpg (http://img399.imageshack.us/my.php?image=headershy5.jpg)
My thought, why waste the money for 2-3mph? Again, just my thought.
The Dana exhaust system is supposed to be a very easy installation with no modification necessary and an increase of 40 to 50 hp .... pretty cheap hp for 2,500.00. Some headers can be a real nightmare to install on the 496.
I had the Dana's on my boat...A little better midrange and thats about it....
Looking at the physics of the two, the tubular Lightning (my choice) would HAVE to have a little more scavenging. If you look at each tube as a rifle barrel, that gas is going to be hauling ass at the end of a long tube. When it gets to the collector, each tube is creating a vacuum through the rest of the header (other ports). I have seen this demonstrated by holding a piece of paper about an inch in front of the inlet flange of any of three tubes. Then, compressed air was blown though the fourth hole and it pulled the paper up to the flange on it's own. So, once again, each tube creates suction throughout the rest of the header.
I know the Dana works very well, as the HP / MPH gains are similar.
When I last checked, the Lightning also comes with an oil filter relocation kit, so either one should be a similar install. I know the earlier versions of the Lightning 8.1 kit were a nightmare. Not anymore, from what I understand.
Cost is similar, so it really comes down to looks, I guess. Personally, I like the look of a tubular header style.
Here's Raylar'd 496 with Lightnings on it:
http://media.putfile.com/Bents-Nordic-Engine
beer30 , thanks for the info and video I really wanted to see a picture of the lightnings on a 496 and they look great.
Glad to be of service.
I just got my new pushrods and valve stem locks. All I have left to get for my valvetrain upgrade is the beehive springs and related retainers. I already have studs, valve cover spacers and 1.75 roller rockers. Gonna see what kind of HP all of that free's up. I would like to do the exhaust at the same time, but I kinda want to see what one upgrade does before the other.
beer30 , what hp did the raylared 496 get..... it also sounds real good on the video
I believe they come in around 550. Pretty equal to an HP525 blue motor.
Bob Lloyd of Full Throttle Marine did some independent dyno testing on this subject about 18 -20
months ago, here's the link from his site.
http://www.fullthrottlemarine.com/49...%20Article.htm
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