L78 Holley Rebuild...

[VintageMusclecar]

Tom;

First off, thanks...as always.

Secondly...dunno if you'd noticed, but the carb has the wrong primary float bowl on it, and it's missing the bowl vent assembly.

Eric

[WILMASBOYL78]

As requested...checked the metering blocks and they are the correct pieces.

rear-4519
front-6328

[Mr. Chevy]

Tom, car looks really good.. How did you do at the Mini Nats?? What is the production date of this (the black) car??
Did you add the return spring coming off the front of the throttle assembly and attaching to the engine lift bracket?? This looks like it may be part of the added bracket you were talking about that the previous owner installed to enhance the secondaries...

Rich

[WILMASBOYL78]

Thanks Rich!....not sure why they put that extra spring on....original setup uses small spring mounting to the rear. That spring is also there....I will see how things work once we get it back from Eric. Car was well received at the show...we got a Peoples Choice award. This show is kind of low key...folks just hanging out in the sunshine and having some fun. Cowl tag date on this vehicle is 12C...engine is 11/22. Spring arrived yesterday...time to get the children ready to play

[Salvatore]

Dual springs were common in the older days. Sometimes the idle did not come back to where it was set at. And also some of the guys liked a stiffer feeling on the accelerator.

[WILMASBOYL78]

Sammy, how stiff is your spring..??

wilma

[Mr. Chevy]

Congrads on the Peoples Choice award Tom!!! One of these years I would like to make it to either the Mini Nats or the Nationals with my Nova...

I also noticed in the pictures that your green colored TCS plug wire that mounts to the switch on the passenger side head has a brown colored plug head on it. I was told that the brown colored plug heads started to surface on the mid to late seventy production cars and the earlier ones used a grey colored plug which is what the repro ones are colored. I had to get a repro one for my car because that portion of the wire was hacked off years ago by the previous owner. Luckily I still had the wiring and black colored plug head that plugs into the TCS solenoid on the intake. I found this coiled up in the wiring gutter...

Just another one of those "tid bits" of information that 90% of the rest of the population could care less about except for us crazy, maticulous car guys!!!

Rich

[WILMASBOYL78]

Rich, you see "new" things on these "old" cars every time you work on them.....I've probably looked at that carb a hundred times and never noticed the incorrect float bowl you just keep doin' and learnin'...I also noticed there's some orange paint overspray on the TCS plug.



wilma

[Jeff H]

That was the first thing I noticed in your picture was te front bowl and vent missing. Maybe that is why they added that bracket thing when the bowl was swapped out.

[WILMASBOYL78]

Well the patient is out of the operating room and on to physical therapy ....the carb doctor did a good job of finding all of my Holley's ailments...and it had a few!! It's amazing how many things can be messed with in 39 years so with a little more TLC and some corrective surgery we will be as good as new ..hope to have it back running by the weekend...pictures from the recovery room to follow