Doug Thorley Headers with SB Trick Flow Heads

Dennis Hilliard said

So if the measurements are off what do you do? I am hitting the bars on both sides so moving the motor from side to side is not going to work. I have raised the motor 1/2" already, that helped some but still hitting, Hard to believe these cars are that much different. Maybe mine is bent or something, I am about to give up here.

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The k frame or engine mounts have to be moved to get it right but with you hitting on both sides that's tough.Check for square as far as if the trans is is kicking off to one side more,I have seen that as well where the k frame and/or mounts were causing the engine and trans to not be square in the chassis.

If the engine measures correctly then with the car level check the transmission output shaft with an angle finder and I would not bring the trans any higher than 1.5 degrees down,that's the ideal spot,if its lower you can shim it up to that point.

Last (and hopefully this is not the case) I had a set of coated Doug's headers that were flat wrong.I had bought them on sale during the holidays and went to install them in the spring and various tubes hit in weird places.I went around with Doug's (its actually pertronix) for a while,they admitted that it happens and even knew of a bad batch going out at that time but they kept telling me to get a hold of some guy that was the "mopar guy".After a few weeks of this I gave up but that is another story.

I hate to say it mopar are one of the worst for header fitment and if you search you will see quite a few threads on this but the only thing they have in common is its a mopar lol,everyone seems like a different situation.If all this fails see if someone close to you has a set of headers (even wrecking yard crap) you can try out or try summits cheap headers then you will know for sure.