Header Fitment Doesn't Look Right - Page 2 - Chevelle Tech
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post #16 of 25 (permalink) Old Dec 27th, 14, 10:45 AM
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Chris
 
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Re: Header Fitment Doesn't Look Right

Quote:
Originally Posted by dell72 View Post
I think the lack of a steering column & shaft is exaggerating the view of the engine offset. Once the steering shaft & column are in place, I think it will look normal. I had 2" Hedman headers on my 71 and passenger side was close to the A arm bolt also.
Totally agree, with the steering column in there it will look normal, its the same on my '67

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post #17 of 25 (permalink) Old Dec 27th, 14, 11:31 AM
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Re: Header Fitment Doesn't Look Right

Looks normal to me as well. Most chevelles and camaros I seen they cut the control arm bolts.

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post #18 of 25 (permalink) Old Dec 27th, 14, 2:28 PM
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Thumbs up Re: Header Fitment Doesn't Look Right

Quote:
Originally Posted by 1967 chevelle View Post
Totally agree, with the steering column in there it will look normal, its the same on my '67
Mine is the same as said

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post #19 of 25 (permalink) Old Dec 27th, 14, 2:34 PM
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Re: Header Fitment Doesn't Look Right

Had to shorten my bolt too for these super comps. Drivers side was pretty much a nightmare.




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post #20 of 25 (permalink) Old Dec 27th, 14, 3:35 PM
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Re: Header Fitment Doesn't Look Right

I think if both sides went in with only having to shorten 1 upper control arm bolt, it's a Festivus miracle. I'd move on to something else myself.

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post #21 of 25 (permalink) Old Dec 27th, 14, 3:47 PM
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Re: Header Fitment Doesn't Look Right

My Dougs clear fine.




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post #22 of 25 (permalink) Old Dec 28th, 14, 11:36 AM Thread Starter
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Re: Header Fitment Doesn't Look Right

OK. I will take the optimistic route and accept that it's a Festivus miracle.
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post #23 of 25 (permalink) Old Dec 28th, 14, 12:04 PM
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Re: Header Fitment Doesn't Look Right

Have you measured the distance between the upper control arm mounts? If the crossmember sags it brings the upper arm mounts closer together.

Here is some info from http://www.einstyn.com/

Quote:
It is very important before putting too much work into the frame to check it for “frame sag”. Frame sag occurs with age and use of a vehicle. It effects the front-end alignment. If a frame is sagged too much, you can tell if the front-end alignment cannot be achieved and all the shims under the front upper control arms are out from between the c-arm shafts and the frame. By measuring the distance between the c-arm mounts you can see how much your frame has sagged. A new frame measures 32”. A frame that measures 31-3/8” is too close. You should have at least 31-3/4” to start with. You can get away with offset shafts if it is not closer then 31-3/8” but the best fix is to take it to a frame shop and have them pull it back out to 32” while you have it apart. If you are using stock c-arms there is a concern with the clearance as frames sag, between the c-arm shaft bolts and steering shaft and the exhaust manifolds or headers on big blocks.
Mine measured 31 3/4" and the headers clear fine. The clearance is substantially more.

Hedman shorty headers from a 67 Camaro are being used. This was during mock up of the 72 frame build.


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post #24 of 25 (permalink) Old Dec 28th, 14, 2:28 PM
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Re: Header Fitment Doesn't Look Right

RickH. I have the same headers on my 69 BB. Just went out and looked and took some measurements. Mine looks just like yours except on the pass. side my bolt to the rear of control arm has 3 or 4 threads cut off. giving me 5/8" clearance to header..3/4" clearance at pass. frt. bolt./ On drivers side have 1 1/4 clearance at frt. bolt and 1 1/2 at rear bolt.


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post #25 of 25 (permalink) Old Dec 29th, 14, 8:28 AM Thread Starter
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Re: Header Fitment Doesn't Look Right

Ken, I have about the same clearance as you measured on the driver's side.
My passenger's front is about 1/4", the rear barely clears after cutting 3 or 4 threads.
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