!!Doug Thorley Headers 4.7L V8!!
- Thread starter BootyFister
- Start date
montana_jeepn
New member
I think it is perfect for the 30+ crowd with children who want a performance sound but don't want to rattle junior's first tooth loose with a super aggressive exhaust. It definitely won't be mistaken for stock at idle, but is only loud when you really press on the pedal. No drone!
I hired someone to do the install on the headers. It was an all day event with an experienced exhaust shop. I personally wouldn't attempt it myself and I am fairly handy.
If you can get by with it, I would also do a custom y-pipe. I've heard that really opens her up....it is definitely the choke point of my exhaust right now.
I think it is perfect for the 30+ crowd with children who want a performance sound but don't want to rattle junior's first tooth loose with a super aggressive exhaust. It definitely won't be mistaken for stock at idle, but is only loud when you really press on the pedal. No drone!
I hired someone to do the install on the headers. It was an all day event with an experienced exhaust shop. I personally wouldn't attempt it myself and I am fairly handy.
If you can get by with it, I would also do a custom y-pipe. I've heard that really opens her up....it is definitely the choke point of my exhaust right now.
what did it run you to have them installed??
Jason B
Official Vendor
Was able to work a deal for St Patty's weekend on Gibson exhaust! Sale ends 4/22 Tuesday. This is a great deal and for those that have the headers, your truck is going to be amazing with this.
Both the stainless and aluminum are being offered at a great deal. Full warranty since we are an "Authorized Gibson Dealer", and lifetime warranty on stainless. Those that want a great system at a great price, order soon!
Gibson 4th Gen exhaust
Gibson 4th Gen exhaust
Both the stainless and aluminum are being offered at a great deal. Full warranty since we are an "Authorized Gibson Dealer", and lifetime warranty on stainless. Those that want a great system at a great price, order soon!
Gibson 4th Gen exhaust
Gibson 4th Gen exhaust
Jason B
Official Vendor
Headers now on the website, and you can find them by searching with your year:
05-09 headers for v8
03-04 headers for v8
2nd batch is done! It's going to be 6-8+ weeks for more to come in after these are gone, so if you are on the fence, order soon. I will update the site when they are out of stock.
05-09 headers for v8
03-04 headers for v8
2nd batch is done! It's going to be 6-8+ weeks for more to come in after these are gone, so if you are on the fence, order soon. I will update the site when they are out of stock.
Jason B
Official Vendor
Yea, it gets annoying. Soon you'll be feeling a 30 HP boost and 2 more+ MPG!
Jason B
Official Vendor
Update:
All headers should be shipping today. Doug Thorley also had a price increase today august 1st, BUT, BUT I haven't changed the price on the website yet, so you'll still save a little off what they should be.
Doug Thorley 03-04 headers ORDER LINK
Doug Thorley 05-09 headers ORDER LINK
ALSO, I CAN THE MAGNAFLOW/FLOWMASTER CATS/MUFFLERS for anyone at great prices
Call/text me at 717-319-2100 to order over the phone, or to order online with a Credit Card, click below
All headers should be shipping today. Doug Thorley also had a price increase today august 1st, BUT, BUT I haven't changed the price on the website yet, so you'll still save a little off what they should be.
Doug Thorley 03-04 headers ORDER LINK
Doug Thorley 05-09 headers ORDER LINK
ALSO, I CAN THE MAGNAFLOW/FLOWMASTER CATS/MUFFLERS for anyone at great prices
Call/text me at 717-319-2100 to order over the phone, or to order online with a Credit Card, click below
Jason B
Official Vendor
Has anyone with a 05-09 put 03-04 DT headers on their truck? Someone on here a few guys did it, but I can't find the post....
The reason why people do this is because the 05-09 headers are $120 more, and you can remove the air injection. I'm trying to advise someone that's doing this install can't find who is was that installed 03-04 headers without air injection on their 05-09.
The reason why people do this is because the 05-09 headers are $120 more, and you can remove the air injection. I'm trying to advise someone that's doing this install can't find who is was that installed 03-04 headers without air injection on their 05-09.
Jason B
Official Vendor
I mentioned a while back how these headers give 30 HP. It's actually 32HP gain/35 ft lbs of torque!!!, more than I thought! Some said no way, and I said they did and there was a dyno, but where-ever it was hosted the link was broken, etc. Another was done and I finally got it. This is on a STOCK TRUCK, stock cats, etc. With a Gibson exhaust, Volant Intake and high flow magnaflow cats (which I also have on sale right now) this truck would give A LOT MORE, probably 15+ more easy. The factory cats are so restrictive that mods like exhaust and intakes help on stock trucks, but no where near what a truck with DT headers would and can do.
BUT, even if you don't care about the power, the gain mpg gains, people have reported on here 2-3 mpg gains. Now, that's if you drive it like you did before the mods, which might be hard for some to do with it being crazy fast after.
Doug Thorley 03-04 headers ORDER LINK
Doug Thorley 05-09 headers ORDER LINK
BUT, even if you don't care about the power, the gain mpg gains, people have reported on here 2-3 mpg gains. Now, that's if you drive it like you did before the mods, which might be hard for some to do with it being crazy fast after.
Doug Thorley 03-04 headers ORDER LINK
Doug Thorley 05-09 headers ORDER LINK
Flash Runner
New member
[MENTION=9]Jason B[/MENTION] I've got an exhaust intake leak, which I think is the cause of a "clicking" sound on start-up and acceleration (07 4.7L). After speaking with the mechanic, I'm under the impression that these new headers will fix this issue.. does that seem correct?
Jason B
Official Vendor
Yes, that's the issue that happens on 4th gen v8's with around 100k-150k miles on them. The factory headers crack. Toyota wants $1,500 for both sides, and usually $3000 total installed. The Doug Thorleys are half that thank goodness, and give lot of extra power and a very nice gas mileage bump! And they carry are lifetime warranty, whereas the Toyota headers don't, and will crack again due to the design flaw with them.
5thGen4Runner2015
New member
Just picked up my 08 V8 with the cracked headers. Will definitely be picking this up sometime in the future. They ever go less than the current listed price? Is it free shipping? Thanks!
PharRunner
New member
How does this effect the emissions test? Will I be able to pass a strict emissions test?
IamHimeros
New member
You'll be fine if you weld in some cats...
Cloud9
New member
I mentioned a while back how these headers give 30 HP. It's actually 32HP gain/35 ft lbs of torque!!!, more than I thought! Some said no way, and I said they did and there was a dyno, but where-ever it was hosted the link was broken, etc. Another was done and I finally got it. This is on a STOCK TRUCK, stock cats, etc. With a Gibson exhaust, Volant Intake and high flow magnaflow cats (which I also have on sale right now) this truck would give A LOT MORE, probably 15+ more easy. The factory cats are so restrictive that mods like exhaust and intakes help on stock trucks, but no where near what a truck with DT headers would and can do.
BUT, even if you don't care about the power, the gain mpg gains, people have reported on here 2-3 mpg gains. Now, that's if you drive it like you did before the mods, which might be hard for some to do with it being crazy fast after.
Doug Thorley 03-04 headers ORDER LINK
Doug Thorley 05-09 headers ORDER LINK
I'm getting the headers installed next week and can't wait! Also, just got the Gibson exhaust installed from Burtman and it looks like a factory special edition with the ceramic tips.
:thumb:
Canada Counter Tariffs on Doug Thorley Headers 25%
Hi Guys:
I mentioned on one of the other threads that I'm looking for an alternative to the Doug Thorley headers for a 2006 V8. Canada has imposed "counter-tariffs" on USA made steel products of 25% to match the tariffs America imposed on Canada earlier this year.
Anyway, does anyone know of non-USA made headers for the V8? The tariffs only apply to America, so anything from Mexico, Japan, etc will be fine.
Hi Guys:
I mentioned on one of the other threads that I'm looking for an alternative to the Doug Thorley headers for a 2006 V8. Canada has imposed "counter-tariffs" on USA made steel products of 25% to match the tariffs America imposed on Canada earlier this year.
Anyway, does anyone know of non-USA made headers for the V8? The tariffs only apply to America, so anything from Mexico, Japan, etc will be fine.
Jason B
Official Vendor
There are none. BUT, I can ship these to a close usa bordering state for you, and that would help you out.
ALSO, I have these about $25 off right now! Best i can do and lowest price they will ever be. Use links below to order. Can only do this for 1 or 2 more days. I updated the site a few days ago with the price drop and forget to post here.
Doug Thorley 03-04 headers
Doug Thorley 05-09 headers
REMEMBER, JAN 1, PRICE INCREASE from the factory. Out of my control. IF you always wanted these, now is the time to grab. Same with the Gibson Catback I also have on sale. They are raising prices also on Jan 1. Thanks to the steel tarrifs fee's, etc
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