1bdbrd

iTrader: (12)

My car has longtubes now but I am starting to not like having them. I don't like the thin metal ticks, or the machinegun sounding rasp at common rpms, I don't like how low they hang etc. Considering swapping back to stock manifolds (or the new Hooker manifolds if they fit) and a custom 3" y pipe with a good merge. How much will the manifolds themselves hold back power? I know the swap from stock to headers/ory is like 20+ but how much of that is y design?

HCI2000SS

iTrader: (2)

A good y-pipe design definitely helps add power over the stock y-pipe. Are we comparing a ORY to stock here?

1bdbrd

iTrader: (12)

Off road yes or one with good modern high flow cats.

HCI2000SS

iTrader: (2)

I can't say for sure exactly, but I'm betting a good 3" ORY will provide as much gains as the long tubes themselves, when comparing to the stock components

1bdbrd

iTrader: (12)

So you think swapping to stock manifolds and a good ory from longtubes/ory would lose me maybe 10-15whp or so theoretically?

HCI2000SS

iTrader: (2)

Yes theoretically

big hammer

If you have old slp headers then the more modern design are a lot better and don't hang nearly as low

1bdbrd

iTrader: (12)

Nah mine are Speed Engineering.

HappySalesman

iTrader: (3)

After having just finished an install of the blackheart longtubes (and their matching dual system) I can say theirs tuck very nicely. I think that the exhaust hangs a little higher than the factory exhaust did, if not it's right around the same height. Looking forward to being able to easily cruise over speed bumps again! lol

1bdbrd

iTrader: (12)

That setup is now on my radar since I made this post. I tracked down some installed pictures and I am really surprised by the ground clearance it has. I wish there were more driving videos of it. Not 100% I like the sound of the mufflers yet.

wannafbody

iTrader: (2)

A catted ypipe might help

HappySalesman

iTrader: (3)

I haven't been able to fire my car up yet (waiting on a tune) but as soon as I do I'll post a vid.

Worst case the mufflers are only clamped on and you could add something else to the system (or an exhaust shop would fab something as well)

G Atsma

And the exhaust won't make your eyes water....

pdxmotorhead

How about the Thorley LS universal headers,, short tube twin Y..
I have their Tri-Y header on my jeep it definitely opened it up on long hills.

G Atsma

Tri-Y's are supposed to be better for the low and mid range, with the top end only a little less than full 4-tube headers.

SoFla01SSLookinstok

I don't think the Blackheart headers are long tubes. I think mid length as to why they tuck up so good. A buddy also just installed their whole system. Said he's just chasing some little rattles here & there. He's happy with it.

1bdbrd

iTrader: (12)

They look to have bot midlength and longtube options. I am curious what the ground clearance difference is between the two header options.

G Atsma

A midlength header will always have more ground clearance simply because the collector is further off the ground, and angled up into the engine compartment.

1bdbrd

iTrader: (12)

Yeah I realize that but I am curious about their clearance anyway.

Docrocket1967

iTrader: (1)

I went TSP 1 7/8 to 3 inch ORY and love it. Bought the complete system from them for a little over $1k and install was a complete breeze.