LS Swap headers

[IMPALA MAN]

Here are some details on the Dynatech Headers. Like any header brand, you must use the correct engine mounts, have the correct engine drive line angle, etc. It plays a huge role in how low the collectors hang, etc.
The link below will help you decide if your combination will work with these headers. As you can see in the link, the flange (at the head) and the bottom of the tubes and collector, do not run parallel, hence the headers are designed for the engine to be at an angle while the collectors run parallel with the sub frame.
These are in the $600.00 range.

FYI
I have seen some transmission combinations that force the customer to either replace the trans tunnel with a raised one, or live with a 5.5 degree engine drive line angle. In these cases the transmission is touching the trans. tunnel and the transmission is as high as it can go. Typically every degree of angle the engine gets tilted, it moves the collectors about 3/8" up or down. If you have an increased drive line angle, you may see low hanging collectors as a result.
These are in the $600.00 range.
Hope this helps.

http://afabcorp.com/Dynatech/lit/Dynatech_LSXCamaro.pdf

Best of Luck with your swap.

[fishface]

Some great info there. Much appreciated!!!

[67Rally]

Originally Posted by IMPALA MAN

Here are some details on the Dynatech Headers. Like any header brand, you must use the correct engine mounts, have the correct engine drive line angle, etc. It plays a huge role in how low the collectors hang, etc.
The link below will help you decide if your combination will work with these headers. As you can see in the link, the flange (at the head) and the bottom of the tubes and collector, do not run parallel, hence the headers are designed for the engine to be at an angle while the collectors run parallel with the sub frame.
These are in the $600.00 range.

FYI
I have seen some transmission combinations that force the customer to either replace the trans tunnel with a raised one, or live with a 5.5 degree engine drive line angle. In these cases the transmission is touching the trans. tunnel and the transmission is as high as it can go. Typically every degree of angle the engine gets tilted, it moves the collectors about 3/8" up or down. If you have an increased drive line angle, you may see low hanging collectors as a result.
These are in the $600.00 range.
Hope this helps.

http://afabcorp.com/Dynatech/lit/Dynatech_LSXCamaro.pdf

Best of Luck with your swap.

Thanks IMPALA MAN, those are helpful measurements.

I was able to get to 4* down on the trans before the driver's side exhaust pipe hit the trans x-member. I should be able to achieve 3* down once the exhaust is re-worked. The floors in my car were replaced before I bought it, and I think that gave me a little extra clearance.

FWIW, I have the tall & narrow frame mounts, Energy Suspension motor mounts, Dirty Dingo Sliders and BMR T56 adjustable trans x-member with an '04 GTO T56.

My cheapo eBay headers don't hang down too low. Maybe about 1/2 of the bottom tube on the collector sits below the subframe. It's just that they don't seal well, even with the GM manifold gaskets, and I had to dimple the pipes in 3 places to get them to fit around the PS box.

[Jr]

67 Rally,
Why don't you list which motor mounts ( both original and LS style swap mounts) oil pan, and power steering you have on the car. After we have all the info, we can help with what might fit better than what you currently have.

[67Rally]

Originally Posted by Jr

67 Rally,
Why don't you list which motor mounts ( both original and LS style swap mounts) oil pan, and power steering you have on the car. After we have all the info, we can help with what might fit better than what you currently have.

Sorry, It's kind of scattered throughout this post, but I also a asked similar question on other forums and may have put more info there.

Frame Mounts: 3945507 & 3945508 (1969 350 and Z/28 tall & narrow)
Motor Mounts: Energy Suspension 3.1117G (tall & narrow)
Engine Plates: Dirty Dingo DD-Slider SBC to LS Conversion Engine Mounts
Oil Pan: Holley 302-1 GM LS Retro-fit Oil Pan
Trans X-Member: BMR TCC005 T56 Transmission Crossmember
PS Box: Delphi 670 PS Box (26088654)