3.7 V6 specs?

[TheTexasBandit]

I don't know if this will be seen by a whole lot of people, but here it goes
Okay I am looking at hand making some new headers for my 08 3.7V6 1500 and I am in need of a few things in order to calculate everything. I am in need of the following.
Exhaust Valve Diameter (inches)
Exhaust Valve Opening point (degrees)
Exhaust Valve Duration
Exhaust Valve Centerline (degrees)
Volumetric Efficiency
Getting this information would be very grateful as I'm not able to find a lot of information about this stuff with the resources I have available to me.

 

[HemiLonestar]

Are you hell bent on making a set? These have been officially discontinued but there are still a bunch floating around out there: https://www.summitracing.com/search/part-type/headers/make/dodge/model/ram-1500/engine-size/3-7l-226
I can tell you gains will be quite minimal other than sound unless you are doing other things to it.

 

[TheTexasBandit]

Are you hell bent on making a set? These have been officially discontinued but there are still a bunch floating around out there: https://www.summitracing.com/search/part-type/headers/make/dodge/model/ram-1500/engine-size/3-7l-226
I can tell you gains will be quite minimal other than sound unless you are doing other things to it.

I'm doing tuned length headers, and I am planning on doing more to the motor too

 

[HemiLonestar]

I'm doing tuned length headers, and I am planning on doing more to the motor too

Now I'm curious, as there isn't factory or aftermarket support for this engine, even with being able to use some 4.7 parts. What are you planning?

Exhaust Valve Diameter (inches) - 1.4516"-1.4618"
Exhaust Valve Opening point (degrees) - opens 233° BTDC (Just in case, closes at 17° ATDC)
Exhaust Valve Duration - 250°
Exhaust Valve Centerline (degrees) - not listed in the FSM
Volumetric Efficiency - also not listed in the FSM. You'll have to figure that one out yourself, though you might ask the guys at AIRRAM, that family of engines is their bread and butter (or it at least used to be).

 

[TheTexasBandit]

Now I'm curious, as there isn't factory or aftermarket support for this engine, even with being able to use some 4.7 parts. What are you planning?

Exhaust Valve Diameter (inches) - 1.4516"-1.4618"
Exhaust Valve Opening point (degrees) - opens 233° BTDC (Just in case, closes at 17° ATDC)
Exhaust Valve Duration - 250°
Exhaust Valve Centerline (degrees) - not listed in the FSM
Volumetric Efficiency - also not listed in the FSM. You'll have to figure that one out yourself, though you might ask the guys at AIRRAM, that family of engines is their bread and butter (or it at least used to be).

I am wanting to make it a stout V6 when it comes to performance. Make it to where it can put out the power and torque like a 4.7 or more. And I figured why not start with the Intake and exhaust system first and work my way up.

 

[HemiLonestar]

I am wanting to make it a stout V6 when it comes to performance. Make it to where it can put out the power and torque like a 4.7 or more. And I figured why not start with the Intake and exhaust system first and work my way up.

Shouldn't be too hard, 3.7 is only 20hp less than the early truck version. When they created the 3.7, they increased the stroke (it has more than a 4.7) to help offset the power loss. Usually no one bothers because there is little factory or aftermaket support for the 4.7 and even less for the 3.7.

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[TheTexasBandit]

Shouldn't be too hard, 3.7 is only 20hp less than the early truck version. When they created the 3.7, they increased the stroke (it has more than a 4.7) to help offset the power loss. Usually no one bothers because there is little factory or aftermaket support for the 4.7 and even less for the 3.7.

Sent from my HTC U11 using Tapatalk

A lot of people like to bolt on aftermarket parts. I like to custom make my parts, put them on, and sometimes make a part from a completely different vehicle work with the current vehicle I am wanting to put it on. Like taking a turbo that is ment for a diesel pickup and stuffing it under the hood of a gasoline vehicle and making it work without destroying anything internally.

 

[HemiLonestar]

A lot of people like to bolt on aftermarket parts. I like to custom make my parts, put them on, and sometimes make a part from a completely different vehicle work with the current vehicle I am wanting to put it on. Like taking a turbo that is ment for a diesel pickup and stuffing it under the hood of a gasoline vehicle and making it work without destroying anything internally.

Well you're gonna get plenty of practice lol

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