Factory Headers?
Thread Starter
Pro
Joined: Feb 2001
Posts: 558
Likes: 0
From: Dallas TX
Factory Headers?
I was looking at my exhaust manifolds today on my 81, and they look like headers. Did the 81's come stock with headers? They look like a really good design, so my question is, if they are factory, is there any benefit to be had by swapping them out with aftermarket headers?
Instructor
Joined: Sep 2003
Posts: 113
Likes: 0
From: Australind, Western Australia
Re: Factory Headers? (Pacin'California)
Here is a pic of my stock 81 headers. I took them off the other month and u will find a lot of weld dags inside. This is what u get from mass production.
Safety Car
Joined: May 2001
Posts: 3,758
Likes: 3
From: Surrey
Re: Factory Headers? (C3 - 81)
I swapped my stock '81 "shorty Headers" out for some Dynomax full length jobs. They've definately helped at the upper rev range. If you pull off the stock Headers & eyeball them you'll see that they are quite restrictive. With the stock "Headers" & dual pipes mine ran pretty good. Fitting Dynomax Headers & an "H" pipe in the system has made it even better & I've had to change the secondary needles as it was running lean at the top end (which proves that either the Headers or the "H" pipe) improved exhaust scavenging.
:cheers:
:cheers:
