Are my headers hurting my numbers?

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Dec 13, 2006 | 07:38 PM

99blancoSS

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From: ST Helens, OR

Are my headers hurting my numbers?

I have Stainless Works LT's. They have 2.5 inch collectors on them into a 2.5 inch catted Y in to the SLP d/d. Is this hurting my hp numbers? 411hp on a mustang dyno with a 9" and 3.89 gears. The power band dropped off after 6300 rpms as well. Does it sound like I dont have a 234/240 cam in it?
347 motor w/ Edelbrock TSP terminator heads

Dec 14, 2006 | 01:04 AM

Louie83

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Stainless Works headers are defininetly not your weakest link.

Your weakest link is having a LS6 intake instead if a Fast. Also, dropping the CATS and adding true duals would add quite a bit.

Dec 14, 2006 | 01:29 AM

Grimes

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411 on a mustang through a 9 inch is excellent. I don't think the headers are holding you back.

Dec 14, 2006 | 01:31 AM

BayAreaSS

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From: Bay Area, CA (Pittsburg)

Quote:

Originally Posted by Louie83

Stainless Works headers are defininetly not your weakest link.

Your weakest link is having a LS6 intake instead if a Fast. Also, dropping the CATS and adding true duals would add quite a bit.

Dec 14, 2006 | 09:06 AM

99blancoSS

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From: ST Helens, OR

I put the same numbers up with a tr224 and PRC 5.3 ltre heads.

Dec 14, 2006 | 09:40 AM

john563

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From: dayton ohio

Quote:

Originally Posted by Grimes

411 on a mustang through a 9 inch is excellent. I don't think the headers are holding you back.

Thats what I thought for an A4.He posted this in another thread where his TR224 cam made the same numbers,but it was through the 10bolt.I think that the 9 inch/gears that he swapt are gonna eat some numbers,nonethe less I think good numbers through an a4 9inch and a MUSTANG dyno