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Old 03/22/2020, 10:15 AM   #16
robert campbell
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Just saw this post. Vacuum advance line should be off the carb. Dial in around 12 to 14 degrees of initial timing. The Holley 4412 is a 500 cfm two barrel. They are alright on larger engines such as a 390, but a bit of a gas hog on a 289/302. But it should perform ok. A good Autolite 2100 would be a better choice all the way around. Or upgrade to an Edelbrock 1403 500 CFM 4 barrel:

https://www.summitracing.com/parts/e...+5ba2635f37202

Compression test would be very helpful to determine condition of the engine. The point gap problem was your biggest culprit for no power. A good points an condenser should run very close to a Pertronix system. The Pertronix just stays in tune way longer.

Rob
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Old 03/22/2020, 11:45 AM   #17
Mosesatm
 
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Location: Spokane, Washington
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I have a rebuilt 2100 sitting on a shelf but it’s a 1.02, which may be a little small. A 1.21 would probably work better. What was the stock carb?

Hmmm, I just looked it up. A '68 C-code apparently came with a 2100 using a 1.08 venturi and 48 jets. I may have a set of 1.08s in my parts bin. That still seems small, though.

Last edited by Mosesatm; 03/22/2020 at 12:03 PM..

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Old 03/22/2020, 12:36 PM   #18
robert campbell
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The smaller one may run out of breath above 5,000 rpm, but it still should be ok. 48 jets sound small, but when coupled with a small venturi carb they work great.

Rob
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Old 06/21/2020, 08:40 AM   #19
Mosesatm
 
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Quote:
Originally Posted by Ruppstang View Post
What is the structure under the cap? Is it part of the fiberglass tail light panel? I would assume that is why there is a twist of cap on it.

Judging from what you have posted so far you are going to have your work cut out for you on this one.
I removed the fiberglass tail light panel and found absolutely nothing wrong with the metal panel. The restorer either didn’t know the car was supposed to have a pop-off gas cap, or he didn’t realize he had to install it before he installed the fiberglass panel. I’m betting on the latter.

So far all the surprises with this car have been pleasant.

This getting older ain't for cowards. - John Mellencamp
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Old 06/21/2020, 01:16 PM   #20
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I bet you are right. That would be a Oh crap moment.

Lucky for you!

Follow HCS restoration at http://68hcs.weebly.com
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