LT headers 1"7/8 vs. 1"3/4 for NA

OzS550 · Nov 10, 2016

Thank you everyone for you constructive replies. Seems 1 7/8 is the best bet regardless NA or FI.

We have a few RHD options for headers here in Australia but not the range you guys have of course.

From headers back we're ok and can use any system. It's just a matter of finding one that suits. I know many are after the old school V8 rumble but the Coyote is not exactly an old Cleveland or Windsor...

Cascadia_302 · Nov 10, 2016

Terminator2 said:
You can have both just need multiple straight through resonators/mufflers. I have front mini bullet resonators and long mid resonators but muffler delete in the rear. I'll be adding rear mufflers back onto mine here soon (probably doing a SLP LM2 AB) just to tame it a little more. It was perfect volume and tone before the headers now it's a bit too raspy and loud and boomy at part throttle. Everyone thinks I'm racing them when I'm at 1/4 throttle and shifting at or before 3000 RPMs lol.

Right, it can be tricky quieting down a car with LT's and not kill power with restrictive mufflers/resonators.
One item l don't hear mentioned much are the straight-through "powersticks" http://www.classicchambered.com/classic/products.html

Not sure what the consensus (if any) is on these? Maybe not much in the way of sound deadening, l don't know.

wildcatgoal · Jan 20, 2017

The above is a lot of the type of "mufflers" use on Harleys. They work.

Terminator2 · Jan 20, 2017

Cascadia_302 said:
Right, it can be tricky quieting down a car with LT's and not kill power with restrictive mufflers/resonators.
One item l don't hear mentioned much are the straight-through "powersticks" http://www.classicchambered.com/classic/products.html

Not sure what the consensus (if any) is on these? Maybe not much in the way of sound deadening, l don't know.

I've got 3 sets of straight through race bullets on my car now with long tubes. I added rear bullets instead of the LM2s. I love it it's silent when I want (no drone either) and it still screams at wide open.

beefcake · Jan 22, 2017

another nice option is our pypes stepped, 1 3/4 to 1 7/8 stepped, great value for the $$

higdominator · Jan 23, 2017

Terminator2 said:
This. I've had both and 1 7/8" are superior overall even in the lower RPMs.

4V Mayhem said:
LOL, there is no legitimate reason to get 1-3/4 headers. I'm not even sure why they even make them that size. Maybe for extra clearance, I don't know. But do yourself a favor and just get the bigger ones. Even if you plan to stay NA.

I'm just curious if either of you have substantive data to prove your theory?

Dragster · Jan 24, 2017

higdominator said:
I'm just curious if either of you have substantive data to prove your theory?

I was just about to ask the same thing. I see people on here all the time talking about how 1 7/8 outperform 1 3/4, but not once has anyone provided any data. Also, the performance will depend upon what other mods are done to the car. Bigger is not necessarily always better. Personally, I'd like to see some real objective data to see what differences-if any-there are on a "standard" bolt on car (exhaust, CAI, tune). Forced induction or highly modified cars are obviously a different story.

wildcatgoal · Jan 24, 2017

I know people with 1 3/4, Pypes stepped headers, and 1 7/8. Nobody has been faster than the other just because of the headers. If I found a set of 1 3/4 pipes that were quality, ceramic coated, and included cats for a great price, I'd be happy to have them since I'm NA.

higdominator · Jan 24, 2017

I will be doing a dyno test of 1 3/4" headers on an exhaust/tune only car (LTH headers/cat back & Lund Flex Fuel on E85). I'm then going to add a Sniper intake and do it again.

wildcatgoal said:
I know people with 1 3/4, Pypes stepped headers, and 1 7/8. Nobody has been faster than the other just because of the headers. If I found a set of 1 3/4 pipes that were quality, ceramic coated, and included cats for a great price, I'd be happy to have them since I'm NA.

Give these headers a look, make sure you call and ask for the best price ;)
www.longtubeheaders.com

[MENTION=14142]Ron@cp-e[/MENTION]

wildcatgoal · Jan 24, 2017

higdominator said:
Give these headers a look, make sure you call and ask for the best price ;)
www.longtubeheaders.com

[MENTION=14142]Ron@cp-e[/MENTION]

Thanks for the recommendation, but... $1800 is Kooks money. "Titan" finish for "added durability"? The finish (ceramic) is supposed to be for heat - don't see a point in getting a coating otherwise. Do you have these headers?

beefcake · Jan 24, 2017

wildcatgoal said:
I know people with 1 3/4, Pypes stepped headers, and 1 7/8. Nobody has been faster than the other just because of the headers. If I found a set of 1 3/4 pipes that were quality, ceramic coated, and included cats for a great price, I'd be happy to have them since I'm NA.

the pypes are a great buy for the $$, one of our best sellers.

hit us up for forum specials

we had a member car here on a basic e85 / whipple setup we do, 759 e85 on the dyno

wildcatgoal · Jan 24, 2017

I need to come across a system that isn't ridiculously loud that sounds good before I buy anyone's headers. So far, no luck. Can't get on many road courses with header noise.

higdominator · Jan 24, 2017

wildcatgoal said:
Thanks for the recommendation, but... $1800 is Kooks money. "Titan" finish for "added durability"? The finish (ceramic) is supposed to be for heat - don't see a point in getting a coating otherwise. Do you have these headers?

They aren't coated, its a surface prep that doesn't wear/chip/flake. IMO I don't see a point in coating 1 3/4" headers. Clearance is more than adequate and gas velocity is going to remain high due to the dimensions, I don't believe keeping heat in them will make much, if any, difference (in any 1 3/4" header).

I do have a set on my car and I've either owned or handled all of the top tier headers and the fit and finish of these belongs right in that group.

$1800 is a lot of money for headers, but I'm sure if you gave them a call you'd get a better price.

I don't want to come off as pushy, just sharing my experience.:ford:

higdominator · Jan 24, 2017

wildcatgoal said:
I need to come across a system that isn't ridiculously loud that sounds good before I buy anyone's headers. So far, no luck. Can't get on many road courses with header noise.

The noise is my concern too. I currently have the headers (catless) and a LTH catback that sound like a catless GT350 in sport mode. It's wicked, but way too much for the road course. Heck, even in my region there are little to know regulations but I can't imagine dealing with it for an entire session without ear pro.

Keeping cats will help some but the key I have found is to have a good resonator in the mix and a good set of mufflers.

wildcatgoal · Jan 24, 2017

higdominator said:
They aren't coated, its a surface prep that doesn't wear/chip/flake. IMO I don't see a point in coating 1 3/4" headers. Clearance is more than adequate and gas velocity is going to remain high due to the dimensions, I don't believe keeping heat in them will make much, if any, difference (in any 1 3/4" header).

I do have a set on my car and I've either owned or handled all of the top tier headers and the fit and finish of these belongs right in that group.

$1800 is a lot of money for headers, but I'm sure if you gave them a call you'd get a better price.

I don't want to come off as pushy, just sharing my experience.:ford:

Dude - open the hood of a car with coated headers after a drive. Then open the hood of a car without. YUUUUUUGE difference in radiated heat.

LT headers 1"7/8 vs. 1"3/4 for NA

OzS550

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Cascadia_302

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wildcatgoal

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Terminator2

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beefcake

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higdominator

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Dragster

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wildcatgoal

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higdominator

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wildcatgoal

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beefcake

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wildcatgoal

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higdominator

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higdominator

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wildcatgoal

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