Trick Flow 240 heads and XP Exhaust Manifolds

[Busteed]

Having a 470 BB built. Using Trick Flow 240 heads. Will there be any issues using Xp exhaust manifolds with these heads? Will there be spark plug / wire issues? I am concerned about them being angle style plugs.

 

[pnora]

xp exhaust manifolds?

 

[Busteed]

xp exhaust manifolds?

Hp....typo

 

[sc440]

Drivers side is clear passenger side you will want to run heat sleeves on #6 and 8

 

[Kern Dog]

xp exhaust manifolds?

I don't understand it either.
Using cast iron manifolds on an engine with these heads is like building a car to handle well with heavily improved suspension then using narrow bias ply tires. Why spend the money on these heads if you're not going to let them breathe?

 

[Mopar Hunter]

I don't understand it either.
Using cast iron manifolds on an engine with these heads is like building a car to handle well with heavily improved suspension then using narrow bias ply tires. Why spend the money on these heads if you're not going to let them breathe?

Some people don’t have the funds to throw at an engine right away. Headers can be added anytime.

 

[Busteed]

Drivers side is clear passenger side you will want to run heat sleeves on #6 and 8

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Thanks for the info! Very helpful.

 

[496 polara]

Are you having a cam ground for manifolds or planning to switch to headers later?

 

[68-500]

Yes headers will make more horsetorques but you can still make power thru manifolds. FAST series comes to mind.

 

[Kern Dog]

Uhh, they run manifolds to meet appearance requirements. They make power despite manifolds, certainly not because of them.

 

[GTX JOHN]

You can make horsepower thru the exhaust manifolds.

However, all the FAST Mopar that I am aware of have significant work
on them including extrude honing plus portingand cost more to do than an average
set of 2 Inch headers.

When I tried the HP manifolds on my 10 Second 440 Valiant, I lost 3 to 4 tenth
over the headers even thru the exhaust system which was only 2 1/2 inch. They
were unmodified as I just tried them out of curosity.


My $ .02 = For Free!

 

[BSB67]

When I tried the HP manifolds on my 10 Second 440 Valiant, I lost 3 to 4 tenth
over the headers even thru the exhaust system which was only 2 1/2 inch. They
were unmodified as I just tried them out of curosity.

Kind of impressive that it was only 3-4 tenths on a 10 second car.

 

[68-500]

Kind of impressive that it was only 3-4 tenths on a 10 second car.

Ding ding winner.

 

[68-500]

Uhh, they run manifolds to meet appearance requirements. They make power despite manifolds, certainly not because of them.

I never implied they made more power then headers. Just that you can still make plenty of power with them. They’re not a choke point. Your simply not taking advantage of the adjacent cylinder exhaust scavenging.

 

[RemCharger]

I don't understand it either.
Using cast iron manifolds on an engine with these heads is like building a car to handle well with heavily improved suspension then using narrow bias ply tires. Why spend the money on these heads if you're not going to let them breathe?

You see alot of that kind of thing here. Spend unnecessary dough souping it right up, and then soup it right back down again with ridiculous stock parts. May as well top it off with a 6 pk

 

[Kern Dog]

You see alot of that kind of thing here. Spend unnecessary dough souping it right up, and then soup it right back down again with ridiculous stock parts. May as well top it off with a 6 pk

THEN you see people defend their poor choices.
Buy a $75 dollar steak at the butcher and cook it in the microwave.
Yeah, you can eat it but you really shortchanged yourself.

 

[PROSTOCKTOM]

There is definitely a lot of mismatched engine parts abound everywhere. I see it more with the SBM crowd.

They all want 408"-426" engines, but don't have enough cylinder head to feed a stout 360.

"Cheap and Good" do not equal correct.

Tom

 

[496 polara]

Some people just don't like dealing with headers. Spark plug access,burnt wires,leaking gaskets (flange and collector),and poor ground clearance with some header designs. They just want to get in and drive without the little hassles. I get it.

If I had to choose between a good set of heads or a set of headers, I would choose heads every time. You need heads to make the power.

 

[GTX JOHN]

Kind of impressive that it was only 3-4 tenths on a 10 second car.

The headers lose most of the tuning and scavenging benefits operating
thru the mufflers have is my observation.

Bach in the early 60's when I was a poor kid (still miss those days), I
would install cut out a foot or so below the manifolds on my Mopar
and pick up a tenth or sometimes more at the track. It had the extra
benefit of annoying the Crap out of the neighbors Saturday nights.

 

[BSB67]

Most people that have exhaust manifolds in a performance application is because they simply want exhaust manifolds. Every element of a street care is a compromise. And everyone has a different place they draw the line to achieve their street car balance. You don't have to like it, or agree with it.