Good article comparing Shorties to Long tubes on a Hemi

[Wild one]

Gen III Hemi Headers Shootout: Finding The Perfect Header for Your Hemi - Mopar DiY

Whether it’s a 5.7L, 6.1L, or 6.4L, every engine responds to exhaust upgrades, especially when the upgrades include dedicated long-tube headers. In design and function, headers are much like the intake manifold, only in reverse. As with the intake, the exhaust manifolds or tubular headers are...

www.mopardiy.com

 

[HEMIMANN]

Nice article, thanks for sharing. The tough part is shoe-horning them into a 3/4 ton frame, then working on the tune again.

 

[seabrook]

Gen III Hemi Headers Shootout: Finding The Perfect Header for Your Hemi - Mopar DiY

Whether it’s a 5.7L, 6.1L, or 6.4L, every engine responds to exhaust upgrades, especially when the upgrades include dedicated long-tube headers. In design and function, headers are much like the intake manifold, only in reverse. As with the intake, the exhaust manifolds or tubular headers are...

www.mopardiy.com

thanks for putting this on here- great read!

 

[Wild one]

thanks for putting this on here- great read!

Just trying to dispell the myth that seems very prevelant on here,that shorties create bottom end torque,and long tubes are only good for top end horsepower.

 

[HEMIMANN]

Well, ostensibly shorties should fix the bolt breaking problem by not warping, for far less money and time than long tubes, even though you don't get much torque upgrade.

Machining the factory cast manifolds after warping also works, but your truck is inoperable while you wait for the manifolds to get milled.

Lots of guys are looking for solutions to exhaust manifold bolt breakage and get into header discussions as a result. I'd wager there'd be far less header discussion without this design flaw.

 

[Wild one]

Well, ostensibly shorties should fix the bolt breaking problem by not warping, for far less money and time than long tubes, even though you don't get much torque upgrade.

Machining the factory cast manifolds after warping also works, but your truck is inoperable while you wait for the manifolds to get milled.

Lots of guys are looking for solutions to exhaust manifold bolt breakage and get into header discussions as a result. I'd wager there'd be far less header discussion without this design flaw.

Cast iron manifolds have always had issues with either breaking bolts,or the actual manifold itself breaking.My Dad used to have a side line business back in the 60's and 70's fixing Fords cast iron FE manifolds that would break if you spit on them,lol.So it's not a new issue,or a Hemi specific issue,GM's LS motors also have manifold issues

 

[Ludville1]

Yeah, long tubes all the way!

 

[HEMIMANN]

Cast iron manifolds have always had issues with either breaking bolts,or the actual manifold itself breaking.My Dad used to have a side line business back in the 60's and 70's fixing Fords cast iron FE manifolds that would break if you spit on them,lol.So it's not a new issue,or a Hemi specific issue,GM's LS motors also have manifold issues

Huh. None of the many cars we owned had issues. But we didn't keep them for 100,000 miles either, much less 200,000 miles.

 

[Treburkulosis]

Great read! Thank you for posting that. I think it needs a sticky.

 

[Wild one]

Huh. None of the many cars we owned had issues. But we didn't keep them for 100,000 miles either, much less 200,000 miles.

Ford P.U's of the 60's and 70's equipped with the FE series engines would break manifolds constantly,and my company 1 ton GM is on it's second set of manifolds,so it's not just a Hemi specific issue.The manifold issues do seem more prevalent in trucks then it does cars though. Kind of makes me wonder why it's seems to be more of an issue in a truck chassis then it does in a car chassis though.

 

[crazykid1994]

I’m guessing heat buildup from the heavier chassis working the engine more in a truck causing more heat cycling. Generally the cars engines are not under as much load as the trucks at any given time. I definitely love the feel of the power band after doing the 6.4 manifold with the ARH 1-3/4 long tubes on my truck. It definitely builds more power all the way through the rpm’s

 

[Canadian-Hemi]

I've always cut the y-pipe on all my vehicals except one, and that 2001 GMC 5.3L truck had the two only broken manifold bolts I've ever had.

 

[RLJ10X]

I was pleasantly surprised how well Shortys did.

 

[JC4041]

I've always cut the y-pipe on all my vehicals except one, and that 2001 GMC 5.3L truck had the two only broken manifold bolts I've ever had.

Yeah I still don't understand why they thought this was a good idea.

 

[Canadian-Hemi]

Which allows for this sweet sounding replacement.

 

[hemihustlin]

Which allows for this sweet sounding replacement.View attachment 477997

how do you find the sound out of those little mf's?

 

[RLJ10X]

It just so happens that I got my 2013 V6 Procharged Mustang re-dynotuned today. 429 hp, and 357tq, on a Mustang dyno. Not bad, right?

I asked him about dynoing the truck, just for fun. My fun. He’d be making money. He said as long as it fit on his rack, it would work. One of these days, maybe.

Go Shortys!

 

[Alan Eldred]

Engine Masters did an episode on this subject also if you like to watch dyno runs

 

[RLJ10X]

The ****** manifolds that the Engine Masters used, bear little resemblance to the cast iron logs that come stock on our trucks. The ****** manifolds are almost like a shorty. So their manifold run is a bit misleading

But the comparison between the shortys and long tubes looks relevant.

*Edit: Evidently, the name brand of that header is a bad word. So I'll spell it backwards. rekooH.

Tap on the pic. You'll see them a lot better.

 

[HEMIMANN]

The ****** manifolds that the Engine Masters used, bear little resemblance to the cast iron logs that come stock on our trucks. The ****** manifolds are almost like a shorty. So their manifold run is a bit misleading

But the comparison between the shortys and long tubes looks relevant.

*Edit: Evidently, the name brand of that header is a bad word. So I'll spell it backwards. rekooH.

I watched an episode of Engine Masters about headers, but don't recall the H*o*o*k*e*r Headers. I do remember them testing with and without a collector, and longer or shorter tubes, and the winning combo was long tubes and collectors.

The H*o*o*k*e*r Headers look like an improvement over the factory cast iron crap. Do you recall what kind of improvements these delivered?