[3tas4me]

Originally Posted by JohnnyHorsepower

Awesome! Thanks. That is what I thought and it was sold out of Stroud Pontiac in CO.
I have the 2 page! original window sticker that was never installed due to factory delivery AND the order sheet with just about every box checked off except rear spoiler. Neither of those have any mention of the "high country special".
I am guessing that I need to have the carbs redone to normal setup.
I have some awesome factory lit that discusses the SD455 and it's specialness. And to not worry about audible piston slap!! etc., but no data on standard carb settings for a TH400 SD455.
Does anyone have that data I can share with my engine guy?

Thanks again!!

John

Get the carb number of the Q-jet on the car. There are plenty of sources that list the main jets, primary rods, secondary rods and hangar number for your carb number. Compare those to the actual parts in your carb and go from there. If you are modifying the car, the stock settings may not even be appropriate anyhow. Otherwise, tune it on the dyno after the build (best option anyway) and then you will know it will be right on.

[JohnnyHorsepower]

Thanks. I am definitely going stock and definitely will be dyno tuned! (even though I have the correct tires, I will leave the BFGs on for my pleasure!)

Originally Posted by 3tas4me

Get the carb number of the Q-jet on the car. There are plenty of sources that list the main jets, primary rods, secondary rods and hangar number for your carb number. Compare those to the actual parts in your carb and go from there. If you are modifying the car, the stock settings may not even be appropriate anyhow. Otherwise, tune it on the dyno after the build (best option anyway) and then you will know it will be right on.