416 Headers L92
11-08-2007, 12:58 PM
#1
TECH Apprentice
Thread Starter
iTrader: (9)
Join Date: Jan 2007
Location: york pa
Posts: 354
Likes: 0
Received 0 Likes
on
0 Posts
416 Headers L92 Iam looking at geting new headers to replace my passeter headers that are 1-3/4 for my 416 with ported l92's are 1-7/8 to 2 inch step headers to big??
Trending Topics
11-09-2007, 03:27 PM
#8
FormerVendor
iTrader: (18)
Join Date: May 2007
Location: Florida
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
More details needed, but on "most" 400-418 cubic inch motor's a quality 1 7/8" is enough header. Even on most 427 setup a 1 7/8" header is a nice fit.
I would do a 1 7/8" with a 3" Y pipe stepped to a 3 1/2" outlet. Should be a very nice combo. Now if you’re going crazy on spray or trying to make HUGE power with LS7 style heads, huge cam etc then that could be a different story. Maybe then you would want a 1 7/8" header with a custom 3 1/2" "Y" pipe to a 4" outlet.
We can get you whatever you need from American Racing, and more than likely have it in stock.
We are having a sale right now on their product. Check it out below.
Thanks
Jeremy
https://ls1tech.com/forums/sponsor-sales-specials/806949-american-racing-headers-halloween-sale-mph.html
I would do a 1 7/8" with a 3" Y pipe stepped to a 3 1/2" outlet. Should be a very nice combo. Now if you’re going crazy on spray or trying to make HUGE power with LS7 style heads, huge cam etc then that could be a different story. Maybe then you would want a 1 7/8" header with a custom 3 1/2" "Y" pipe to a 4" outlet.
We can get you whatever you need from American Racing, and more than likely have it in stock.
We are having a sale right now on their product. Check it out below.
Thanks
Jeremy
https://ls1tech.com/forums/sponsor-sales-specials/806949-american-racing-headers-halloween-sale-mph.html
11-09-2007, 04:02 PM
#9
TECH Fanatic
iTrader: (21)
Join Date: Feb 2006
Location: Allen Park, MI
Posts: 1,370
Likes: 0
Received 0 Likes
on
0 Posts
More details needed, but on "most" 400-418 cubic inch motor's a quality 1 7/8" is enough header. Even on most 427 setup a 1 7/8" header is a nice fit.
I would do a 1 7/8" with a 3" Y pipe stepped to a 3 1/2" outlet. Should be a very nice combo. Now if you’re going crazy on spray or trying to make HUGE power with LS7 style heads, huge cam etc then that could be a different story. Maybe then you would want a 1 7/8" header with a custom 3 1/2" "Y" pipe to a 4" outlet.
We can get you whatever you need from American Racing, and more than likely have it in stock.
We are having a sale right now on their product. Check it out below.
Thanks
Jeremy
https://ls1tech.com/forums/showthread.php?t=806949
I would do a 1 7/8" with a 3" Y pipe stepped to a 3 1/2" outlet. Should be a very nice combo. Now if you’re going crazy on spray or trying to make HUGE power with LS7 style heads, huge cam etc then that could be a different story. Maybe then you would want a 1 7/8" header with a custom 3 1/2" "Y" pipe to a 4" outlet.
We can get you whatever you need from American Racing, and more than likely have it in stock.
We are having a sale right now on their product. Check it out below.
Thanks
Jeremy
https://ls1tech.com/forums/showthread.php?t=806949
11-09-2007, 05:00 PM
#10
FormerVendor
iTrader: (18)
Join Date: May 2007
Location: Florida
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
American Racing does have stepped headers. And custom built "Y" pipe's. I don't have any pictures of what your asking for but I will put a call into Nick at ARH to see if he can send me a few.
They do make a 3 1/2" to 4" "Y" pipe and are making one right now for a customer that ordered last week.
They do a custom merge so you don't have that raspy sound, leaks, etc and the product is top notch. The price however is much greater when you get into the 1 7/8" stepped and the custom "Y" pipe's.
If you are making the power to need this kind of header/Y pipe then I believe ARH will be the best system you could choose. The product is unbeatable.
Send me a email @ JZ@mphparts.com and I will do my best to get a few pictures for you and go over cost on these systems.
Thanks
Jeremy
They do make a 3 1/2" to 4" "Y" pipe and are making one right now for a customer that ordered last week.
They do a custom merge so you don't have that raspy sound, leaks, etc and the product is top notch. The price however is much greater when you get into the 1 7/8" stepped and the custom "Y" pipe's.
If you are making the power to need this kind of header/Y pipe then I believe ARH will be the best system you could choose. The product is unbeatable.
Send me a email @ JZ@mphparts.com and I will do my best to get a few pictures for you and go over cost on these systems.
Thanks
Jeremy
11-09-2007, 08:19 PM
#12
FormerVendor
iTrader: (18)
Join Date: May 2007
Location: Florida
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
You alreay run some real impressive times. What kind of power are you making? What MPH did you run in the 1/4?
I still feel 1 7/8" is a great headers do go with and enough for your NA motor. We have done 3 ported heads/ L92 motor's now and the best power was 551.7... He has 1 3/4" ARH headers, which just goes to show that the combo is working and I doubt the 1 3/4" are holding him back much.
Jeremy
I still feel 1 7/8" is a great headers do go with and enough for your NA motor. We have done 3 ported heads/ L92 motor's now and the best power was 551.7... He has 1 3/4" ARH headers, which just goes to show that the combo is working and I doubt the 1 3/4" are holding him back much.
Jeremy
11-09-2007, 08:45 PM
#13
TECH Apprentice
Thread Starter
iTrader: (9)
Join Date: Jan 2007
Location: york pa
Posts: 354
Likes: 0
Received 0 Likes
on
0 Posts
mine did 505whp when it was a 6 speed and 445 whp with the th400. 124mph with a 1.50 60 foot, iam trying to get my numbers up were they should be iam changing the cam and headers to help i hope, looking to get 470 whp with the th400, when my car was a 6speed it just did not make no were near 551 whp looking for the missing hp
11-09-2007, 08:52 PM
#14
FormerVendor
iTrader: (18)
Join Date: May 2007
Location: Florida
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
Well I will give you the breakdown of his combo and you can do the math however you believe it works best.
2003 Z06
12:1CR
TEA ported L92's with a L76 intake, and a ported LS2 TB.
250/258 duration cam, 620ish lift on a 113+0
ARH LT's with non catted X pipe, and Borla Exhaust
Ele Water pump, vararam, cometic .045 gaskets.
93 octane. Dynoed on a dynojet 248C with a spec stage 3+ and alunimum flywheel.
He now has a steele flywheel and a heavier rear time and made 533 a few weeks back.
But says it feel's stronger. HAHA go figure.
hate to do this to you as you already have a strong running car but have you considered the 4" bore ETP LS7 heads? You will gain between 15-30 CFM's through the manifold using the LS7 style ETP heads and a ported LS7 intake manifold over what you have now. The manifold is really a killer of power, especially past 6,200 RPM's.
2003 Z06
12:1CR
TEA ported L92's with a L76 intake, and a ported LS2 TB.
250/258 duration cam, 620ish lift on a 113+0
ARH LT's with non catted X pipe, and Borla Exhaust
Ele Water pump, vararam, cometic .045 gaskets.
93 octane. Dynoed on a dynojet 248C with a spec stage 3+ and alunimum flywheel.
He now has a steele flywheel and a heavier rear time and made 533 a few weeks back.
But says it feel's stronger. HAHA go figure.
hate to do this to you as you already have a strong running car but have you considered the 4" bore ETP LS7 heads? You will gain between 15-30 CFM's through the manifold using the LS7 style ETP heads and a ported LS7 intake manifold over what you have now. The manifold is really a killer of power, especially past 6,200 RPM's.
11-10-2007, 12:11 PM
#15
TECH Apprentice
Thread Starter
iTrader: (9)
Join Date: Jan 2007
Location: york pa
Posts: 354
Likes: 0
Received 0 Likes
on
0 Posts
dont want to change heads yet because i want to build another motor next fall using a tall deck lsx block, his cam is all most like my new one from texas speed 251-259 661-663 on a 112 i hope it helps over what i got now, thanks for your help
