z28cmr83

What do you guys think about the Streetmaster Rochester Quadrajet from Jet Perfomance Products (The Stage 2 Version)?

Does it go right in the place of the old quadrajet, and hook up to all the computer controls? Is this just a rebuilt quadrajet?

Most of all, what performance gains do you think I will see over the stock quadrajet?

http://www.jetchip.com/

Auggie

Well, if you look at the pic this is an emission carb but not for the CCC system. I don't see a M/C solanoid.

Auggie

Apeiron

Jet will modify your CCC carb though, you can contact them for details. Some people say that Jet's work isn't as good after Sean Murphy left to start his own business.

z28cmr83

well im not buying one direct from jet, im buying it off a friend that says it will work completly with the computer

Auggie

I don't think so. Like I said the pic does not show any M/C solanoid. Call Jet.

Auggie

Apeiron

The picture doesn't tell the whole story. CCC carbs are available from Jet.

z28cmr83

what exactly is a CCC carb and an M/C solonoid, ill ask to see the carb he is selling and I will see if it has it

Apeiron

CCC stands for Computer Command Control. It was GM's name for their feedback carb setup. the MCS is the mixture control solenoid, the computer tells it to move the primary metering rods up and down to control the mixture.

z28cmr83

does anyone have a picture of what the M/c solonid is, also how much does one of these carbs cost new?

z28cmr83

if this carb was on an LG4 engine, and it worked fine with the computer, would it work fine with my L69? and if it dosent have a Mixture control solenoid, would i get a check engine light?

If anyone has a pic of the MCS that would be great, thanks.

Apeiron

If it was on a computerized LG4, then it has an MCS and it should work fine on an L69.

z28cmr83

did any other GM companys use the LG4, like buic, pontiac etc?

Apeiron

Yes, they pretty much all had at least one LG4-equipped model.

z28cmr83

and if it worked on a buic LG4 it would work on a Chevy LG4 which would work on a L69 right?

five7kid

iTrader: (14)

Probably. The L69 was tuned a little differently, and some LG4 carbs had restricted AV opening, and L69's didn't.

Rick King

i would get the proper cfm carb and then tune it to your fuel needs--all engines will not be the same--food for thought

later and gb
rk

five7kid

iTrader: (14)

That's the beauty of the q-jet carb. It's the proper size on so many different engines, up to the point you "need" more than 750-800 CFM.

z28cmr83

so will i notice a difference over a stock q-jet?
and are these new or just rebuilt to higher specifications?

five7kid

iTrader: (14)

Depends upon the condition and tune of the stock q-jet.

The latter.

Apeiron

It should be noted though that "parts-store" rebuilt Q-jets are not necessarily (or even normally) rebuilt to the same or higher specifications than stock.