Ruggles mods for a mild 350

I modified a 68 350 carb 7028244 for performance using the Cliff Ruggles book.

WHOAH what a difference!

outstanding idle,
vastly improved throttle response,
Lots more power throughout the RPM range.

I have nothing but good things to say about the mods and their results.:3gears:

WOW get the book

 

I've always said a good quadrajet is perfect for the 350. No need to spend money on a Holley or Demon!

 

You all have had better luck with those than me.:Brow:

 

Good news!

We back to back, dyno and at the track my 1977 Q-jet against the Holley HP950, Demon 850, Holley 4781-2 (custom built) 850, and a custom 925cfm Holley. The q-jet made MORE power on the dyno and ran quicker at the track.

The best contender against it was the 4781-2 Holley 850, making 2 LESS HP, and running .02 seconds and .30MPH slower than the q-jet.

We did the dyno testing with the Holley against the Q-jet as part of a magazine article for HPP and Popular Hot Rodding's "Engine Masters" edition. We spent an entire day on the dyno, the re-installed the engine and they rented the Norwalk Ohio dragstrip to run the car on for an entire day. The tests were witnessed by a representative from the magazine, track officials, and many others. They did NOT reflect the results in the ariticle(s) that followed....wonder why?......Cliff

 

Any Chance Of Someone Recasting The Quadrajets As New Street/strip Or Full Race Units?

 

Highly unlikely. There is still a very good supply of the late model cores, which we prefer, and use for almost all of our custom street, street/strip, and full race units. The later units are usually passed up by folks looking for the early holy grail stuff, so the prices are still quite reasonable.

I try to save most of the early stuff for the restorer's, and other than some pure stock or FAST cars, and once in a while a Stock or Super Stock application.......Cliff

 

Odd number?

Cliff,
I saw a Rochester #7043282 on E-bay. It was listed as a Buick model but if I am reading the numbers correctly, it is either a 1973 Marine or Checker model? Is this correct? Does it have any collector value?

I will be using the book to help me rebuild both a 750 and an 800 (7029240 MD and 7042240 MB) that I have on the bench now for my 430. Just received the rebuild kits and parts from Gessler this week.

 

Re: Odd number?

I actually prefer a Q-jet or a carter. much more easier to work on. I HATE holleys. too hard to adjust and runs like crap. I put a performer intake with a holley on my old 70 GTO. Never ran right at all even after getting a speed shop to adjust it. wound up going back to the Q-jet.

Cliff how can I get this book?

Tim

 

http://www.amazon.com/Rebuild-Modif...=sr_1_1?ie=UTF8&s=books&qid=1240975438&sr=1-1

 

Do you think that the adjustable part throttle feature (apt) of the later q jets helped in this testing? I have been using the 72-74 800 cfm Q jets from Buick 455s but thinking about trying out one of the 80 Buick 350 carbs I have since it has the APT feature.