General consensus is that shorty headers flow no better than the stock manifolds.
General consensus is that shorty headers flow no better than the stock manifolds.
Mike Williams
#001
98 DA RC GrapeJuice
99 BLK CC (Buy Back)
00 BLK RC ProCharged -Hotchkis - on and on (Sold)
01 AF CC (Leased - Turned in)
[QUOTE=evilrt;534177]General consensus is that shorty headers flow no better than the stock manifolds.[/QUOTE
I'm not a member of that consensus. My experience of using both demonstrated to me that the shorties did in fact show seat of the pants improvement at just about every rpm range.
I went catless at the same time, but I like to think I felt a very minor improvement across the board when I did the shorties (again on a 4.7).
Plus those shiny octopus arms look good under the hood!
I am not in a position where I am in need of new headers, as my 21 year old Edelbrocks still appear to be in great shape. This discussion got me to thinking 'what will I do when mine finally give out'.
Makes me consider buying a new set and storing away for the day.
"Excuse me if I have some place in my mind, where I go time to time"
longtubes.jpg
longtubecollect.jpg
these are equal length too right?
According to David Vizard, equal length primary is not as important as the length of the secondary, since most of us all run exhaust, and at our power level who cares? If it fits, send it.
11.27 @ 118.232017 NM Mopar Challenge Series Champion
This was when you went to the track and uncapped headers. We found lengthening the collector did in fact give a bit more torque. Equal length primaries scavenged exhaust gases out more efficiently but this was at high rpms and for race applications..
As you say, who gives a rats ass about any of this on the street.
1 and 3/4" tubes ...3" exhaust and it will be almost like uncapped headers.
Any reason these wouldnt fit my 2003?
Their listing states 1998-2001
http://www.stans-headers.com/Photos/399Y.jpg
Last edited by AN03RT; 04-01-2021 at 03:31 AM. Reason: additional info
$770 uncoated, damn...
As for your question, dunno.
"Excuse me if I have some place in my mind, where I go time to time"
5.9 Manifold = 347.9 lb-ft of torque at 3,200 rpm and 292.8 horsepower at 5,200 rpm.
Shorty Header = 355.7 lb-ft at 3,000 rpm, and 316.3 horsepower at 5,200 rpm.
Long Tube Header = 364.9 lb-ft at 2,800 rpm, and 325.1 horsepower at 5,400 rpm.
https://www.hotrod.com/articles/comp...and-manifolds/