[jwcfbd]

Originally Posted by Silver03bugeye

The car has never been on a dyno. I've had it since I was a teen and when I started making adult money I had a friend of a friend with a machine shop do the engine work. He is a great machinist but terrible at finish work so I kind of ended up with a basket case.

How do you like the Doug's headers? I've got a bad leak on one of my manifold gaskets so i'm planning to buy some new headers but want to be able to justify if the price is worth it over a set of ceramic coated long tubes from summit.

I'm really happy with them. I was running Hooker Super Comps in 1 3\4" but with the new engine my builder was pretty adamant about me using 2". Doug's were closest at 1 7/8" and came in round port which I need for the Edelbrock heads I have now. Both fit great. I would compare metal thickness and fit before buying a set.
It looks like Hooker is now making the ceramic coated super comps without a collector flange. You would have to go with regular competition series if you want bolt together flanges.

[70GS455]

Not a Pontiac motor but the carb info is valid. This is a 93 pump gas street/strip setup, idles with 13" of vac. The 800 CFM Qjet made just 2 hp (608 vs 610) and 7 ft lb shy of a Holley 950 Ultra HP. This was an 80805 with 1.60" venturis and 1.75" throttle blades. The standard, widely accepted "recipes" fall short when making 600+ hp with a Qjet; you have to get the rear air doors open to maximum in order to flow the air, mine was as much as 1.190" as measured in the book. And with the air door open that far, you have to ensure you have the fuel delivery; I had to use the larger secondary floor disc jets.