Recent content by 78IndyPace

Here's a link to my thread on another Corvette forum that may help: How Your Headlight Vacuum System Works The original post (it's rather long) includes some troubleshooting tips that I learned the hard ways, as well as links to other resources that might help. Good luck!

Here's a link that should help: http://www.corvettefaq.com/c3/heatercoreremoval.pdf Used it when replacing the heater core in my '78 about 4 years ago. Was the best reference I could find at that time. Not a fun job. Requires more patience than skill. Be especially careful when removing your...

You have 3 choices as far as I know: 1. Replace the 2 speedo cables with the single cable for a non-cruise control Vette, or 2. Replace the cruise control transducer, or 3. Repair your cruise control transducer. I know of no instructions on how to do a transducer repair, but the unit is...

From the wiring diagram for my 78: Lt Green - Right Front - Feed from Radio Dk Green - Right Front - Speaker Return Tan - Left Front - Feed from Radio Gray - Left Front - Speaker Return Lt Blue - Right Rear - Speaker Return Dk Blue - Right Rear - Feed from Radio Yellow - Left...

Quadrajet Info There's a ton of Quadrajet stuff out there. Do a search on "Lars Grimsrud Quadrajet" and you'll have much of it at your fingertips. I had a problem like yours on my 78, and it turned out to be the tension spring on the shaft for the large air flaps above the secondary throttle...

I've found the sealed beam halogens quite adequate even for our mountain roads. However, here's a link to a thread on another forum about a halogen setup for our C3s that is simple, looks great, isn't too pricey, doesn't require new wiring, and does the job. Scroll about halfway down the page to...

Servo vs. Transducer The servo is mounted on the top left rear of your motor and connects to your carb's throttle linkage. The unit is merely a spring loaded diaphragm that responds to a modulated vacuum signal from the transducer to open & close the throttle and maintain constant RPM. The...

Probably time to check your speedometer cables. Do a search on this forum and others for "speedometer+cable+lubrication". The longer cable from the transmission to the cruise control transducer is more likely to be the culprit than the short cable from the cruise transducer to the speedometer...

Mine was dripping where yours is as well as a couple of other places underneath. I had 2 problems: (1) passenger side valve cover gasket, and (2) oil pan gasket. Also, the oil pan's gasket flange area had a small dent just in front of the oil filter. I very carefully worked the dent out of the...

First step is to check all vacuum hoses connected to the transducer. On my 78, surging was caused by the transducer. Surging was accompanied by the speedometer needle bouncing a bit. Removed the transducer, inserted the tang of a small round file in the socket where the speedo cable from the...

Think hard about doing this... Here's a post quoted from another forum that you might consider before your disable your clutch actuated starter safety switch: I have personal experience from several years ago when my daughter attempted to start a 4-speed VW while in 1st gear without depressing...

Headlight Improvements Replaced original sealed beams with halogen sealed beams in my 78. Much better. Then I modified the headlight electrical circuit by adding standard automative relays to control on-off and high-low beam switching. Now the high current goes directly from the...

The March 2008 "Corvette Enthusiast" magazine has an excellent article with lots of photos about installing a Dakota Digital cruise control in a C3. Here's a link to the kit that was installed for the article: Cruise Control for Cable Driven Speedometers My 78 has the original factory...