Schit, that's nothin......I'm getting around 27 in mine. And I'm a high-boy 390/C6 with 35s and 4.10s and cruising at 70mph.


I agree.....I call Bullschit too!

 

Yeah, when you're on a trailer!!

 

The Edelbrock is not a Q-jet design, it's a Carter AFB. Go through Edelbrock, they say their kits work for the Performer and the stock AFB.

And I know all spreadbore carbs are not Q-jets. Ford made one, Chyrsler had it's own, but I'd like you to show me a Quadrajet that isn't a spreadbore.

All i was saying is that the Performer IS NOT a quadrajet because all quadrajets are spreadbore. Even if everything about it was q-jet (which it isn't) besides the baseplate, it still would not be a quadrajet because you wouldn't be able to go to any local parts house, buy a Q-jet base gasket, and install your carb. That there is enough of a difference to warrant a different model designation.

And your reference to Holley producing both squarebore and spreadbore carburetors is totally off base. The Q-jet is the model name for a carburetor produced by rochester (and carter under license). That model just happens to be a spreadbore carburetor. That doesn't mean that they couldn't also produce a squarebore carb (but it would be a different model from quadrajet)

Following your initial line of logic that would be like me saying that since the Autolite 4100 was a squarebore, then all Autolite carbs are squarebore. It just doesn't make sense.

Justin

 

Oh yeah.... I guess I forgot to mention the trailer in my original post, didn't I?

 

Here are the Edelbrock Q-jets that I was talking about.

http://www.carburetion.com/Rochester.asp

I thought that the current Edelbrock carbs were a newer version of this carb...I guess I was wrong... but at one point Edelbrock did make Q-jet carbs...

 

Well, you are correct, edelbrock does and did produce their version of the Quadrajet. I think i said that earlier, but i'm not sure. Anyway, the carburetor he says he has is Edelbrock's version of the Carter AFB.

Justin

 

So, I installed an O2 sensor to see what was really going on. Despite the fact that Edelbrock says the stock set up is "lean", I was running rich, so I change the jet and metering rods to a slightly leaning combination and the O2 sensor now shows mid 15's which should be about right for maximum mileage. I detailed the change in a different thread. We'll see what the mileage is on the next tank. Stomping on it is definatley a problem as the secondaries are pouring gas into the intake. Got to change that next.

Peter

 

That is nothing.. I've been getting about 45mpg in mine.... It hasn't ran in 6 years and I've been dragging it from house to house but I'm still getting 45mpg