1 7/8 or 1 3/4 headers?

[Mopar to ya]

I need new headers when I install the 408 in my 73 Dart Sport. I had the 1 3/4 tti picked out but I see they also have the 1 7/8 as well. I always thought it is better to breathe as well as possible and am thinking of the 1 7/8. It is rated for 550hp and up and I am in the 500hp range. What do you think? I believe bigger is better in this case.

 

[demon seed]

I have had a simple rule over the years as to sizing headers, get the biggest that'll fit.

 

[1970Duster]

I'd normally say go for the 1 7/8 but I'd wait till I'd hear from someone using them along with a 727 (that way you know it'll work with the 200r4).

 

[RustyRatRod]

1 7/8

 

[Mopar to ya]

I'd normally say go for the 1 7/8 but I'd wait till I'd hear from someone using them along with a 727 (that way you know it'll work with the 200r4).

Cant wait. They have to be here and ready to install when I do this thing. They are supposed to work well with 727, but I think I'll call TTi on Monday just to be sure they will work with the 200R4.

 

[rumblefish360]

I have had a simple rule over the years as to sizing headers, get the biggest that'll fit.

LOL, yes! X's 2! Even more so when you start making some good power.

 

[crackedback]

I'd bet money the 1 5/8-1 3/4 step headers will outperform the straight 1 7/8" headers at that level.

Seen it more than once.

If you want fit and 1 7/8 buy tti, if you want 1 7/8 headers that make HP, look elsewhere

 

[Mopar to ya]

I'd bet money the 1 5/8-1 3/4 step headers will outperform the straight 1 7/8" headers at that level.

Seen it more than once.

If you want fit and 1 7/8 buy tti, if you want 1 7/8 headers that make HP, look elsewhere

All the headers I have are double duty. Part header, part skid plate. I want performance and fit, and to more dragging on the ground!

 

[crackedback]

I'd still buy the step header for a 500 hp 400" engine. The 1 7/8 will not make any more power, likely less and the mid range TQ will be down... lose/lose IMO

 

[moparclown]

I run the TTI 1 7/8 headers with a 904 trans and the fit I thought was fantastic.Car does dual duty as a street/strip car and the headers are tucked up very nicely.

 

[73dart360]

I run the TTi 1 7/8 , they fit nice 360/408