[Yukon Jack]

Here are some pics of my headers now that they are installed and fitted. This is on my 69 with a 454. These headers are Dynomax Cermacoated headers designed for the 67-87 BBC 2WD. The headers for 73-87 BBC 4WD would not work.

The engine is sitting in the small block engine crossmember using the original small block style engine mounts. I did move the crossmember forward about 3/8" or so to give me better oil pan clearance and header clearance for the first header tube on the passenger side.

To make these headers fit I did not have to make any modifications to the driver's side other than I did have to go with a shorter oil filter as this engine has an oil cooler setup which put the larger oil filter in contact with the headers.

On the passenger side I had to remove a little bit of frame to give clearance for the first and second header tubes. I would guess I removed about 1/4". I also ended up grinding off a little bit of the engine crossmember tower as it was in contact with the bottom of the first header tube. In the end I had to use some spacers that I put between the engine and the engine mount bolts to raise the engine a bit on the passenger side and I also raised the drivers side by using spacers about half as big.

The above modifications have me comfortable with the clearance around the oil pan and passenger side headers.

I will go ahead and post a number of pics showing how the headers sit in the frame and how they are positioned in regards to the Rockwell transfer case as I hope this will be of interest to others who are doing a big block swap in a 67-72 four wheel drive.

First pic is overview of drivers side.