Distributor ?

Reply Subscribe

Thread Tools

Search this Thread

Mar 16, 2010 | 06:29 PM

shemp

Thread Starter

Drifting

Joined: Jun 2005

Posts: 1,974

Likes: 2

From: Crownsville Md.

Distributor ?

Why does my old dist. look different than the one I just got from Zip's
427/390 from a 68. Also I just got the correct rochester carb for this motor. The fuel filter has a vapor return line where does it connect on the lower end? Is there supposed to be another line going back to the sending unit on the tank. My car is a 67 but the motor a 68.
Shemp

Mar 16, 2010 | 06:38 PM

redvetracr

Race Director

Joined: Aug 1999

Posts: 18,126

Likes: 174

From: WI

PM sent

Mar 16, 2010 | 08:48 PM

Bluestripe67

Race Director

Joined: Jan 2002

Posts: 15,352

Likes: 2,725

From: Close to DC

C2 of the Year Finalist - Modified 2020

Shemp Is all the above related to your engine issues last week?

Dennis

Mar 16, 2010 | 09:16 PM

shemp

Thread Starter

Drifting

Joined: Jun 2005

Posts: 1,974

Likes: 2

From: Crownsville Md.

Yes it is. I found the tach drive gears were gone. I believe the car jumped time somehow. I got the car running much better by advancing the timing way up. Then the tach stopped working and when I pulled the dist. I found out why. So I just bought a new one. I also new the carb was too big the plugs were black after just a few minutes. So I found a restored rochester 7028209 carb,it arrived today. I just realized 68 had a accelerator cable instead of mechanical linkage so I have to figure that one out. I hope to have it back together this weekend. Shemp

Mar 16, 2010 | 09:21 PM

Nowhere Man

Team Owner

Joined: Feb 2003

Posts: 54,105

Likes: 9,418

From: Sitting in his Nowhere land Hanover Pa

2024 C2 of the Year Finalist - Unmodified

2015 C2 of Year Finalist

distributor on the left is a 65-66 BB only.

Mar 16, 2010 | 09:35 PM

Nowhere Man

Team Owner

Joined: Feb 2003

Posts: 54,105

Likes: 9,418

From: Sitting in his Nowhere land Hanover Pa

2024 C2 of the Year Finalist - Unmodified

2015 C2 of Year Finalist

why did you go with a 68 Rochester carb in place of a 67 Holle?. why would you create more problems?

Mar 16, 2010 | 09:39 PM

62Jeff

Tech Contributor

Joined: May 2005

Posts: 15,576

Likes: 118

From: Conroe Texas

Quote:

Originally Posted by Nowhere Man

why did you go with a 68 Rochester carb in place of a 67 Holle?. why would you create more problems?

Well, he does have a 68 motor in his car, so it's not unreasonable to think that a 1968 configuration might be the best way to go.

Mar 16, 2010 | 09:44 PM

Nowhere Man

Team Owner

Joined: Feb 2003

Posts: 54,105

Likes: 9,418

From: Sitting in his Nowhere land Hanover Pa

2024 C2 of the Year Finalist - Unmodified

2015 C2 of Year Finalist

Quote:

Originally Posted by 62Jeff

Well, he does have a 68 motor in his car, so it's not unreasonable to think that a 1968 configuration might be the best way to go.

not when its in a 67. I am not sure what intake he has on the car but a service replacement holly will bolt up and go with the correct fuel line. any 65-74 BB looks the same from the out side

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

10 Ugly Corvettes That We Still Kinda Love

Joe Kucinski

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

Brett Foote

10 Things Every Corvette Owner Needs (2026 Edition)

Michael S. Palmer

8 Most "Only Corvette Owners Understand" Quirks and Problems

Pouria Savadkouei

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Joe Kucinski

How Much Horsepower Every Corvette Engine "LOST" in 1972

Joe Kucinski

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Michael S. Palmer

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Joe Kucinski

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Joe Kucinski

8 Coolest Corvette Pace Cars (and Replicas) of All Time

Verdad Gallardo

Mar 16, 2010 | 09:48 PM

62Jeff

Tech Contributor

Joined: May 2005

Posts: 15,576

Likes: 118

From: Conroe Texas

Quote:

Originally Posted by Nowhere Man

not when its in a 67. I am not sure what intake he has on the car but a service replacement holly will bolt up and go with the correct fuel line. any 65-74 BB looks the same from the out side

I'm just suggesting that perhaps you should not be so quick to judge the actions of others.

Mar 16, 2010 | 09:53 PM

#10

Nowhere Man

Team Owner

Joined: Feb 2003

Posts: 54,105

Likes: 9,418

From: Sitting in his Nowhere land Hanover Pa

2024 C2 of the Year Finalist - Unmodified

2015 C2 of Year Finalist

Quote:

Originally Posted by 62Jeff

I'm just suggesting that perhaps you should not be so quick to judge the actions of others.

I am sorry. but I am just trying to figure out the reasoning behind this. I was always taught if there is a correct way or part to make your car better to use it then rather to "make" something else work. in the long run I find it easier to spend a couple more dollars and get the correct part.

lets wait and see what the OP point of view. I am here to learn just like everyone else

Mar 16, 2010 | 10:24 PM

#11

shemp

Thread Starter

Drifting

Joined: Jun 2005

Posts: 1,974

Likes: 2

From: Crownsville Md.

I guess I just didn't do my homework on this one. I had a couple friends look at my problems and suggest a different carb, so I just figured the original would be the best for the setup I have. I hope it's not that big of a deal to get it to work properly. I am by no means an expert at this and learning more and more with each problem tha arises. I appreciate all the comments good or bad because that is how you learn. I still need an answer to the vent tube ?. Thanks to all Shemp

Mar 16, 2010 | 10:31 PM

#12

Nowhere Man

Team Owner

Joined: Feb 2003

Posts: 54,105

Likes: 9,418

From: Sitting in his Nowhere land Hanover Pa

2024 C2 of the Year Finalist - Unmodified

2015 C2 of Year Finalist

if it was me I would sell the 68 carb and have your holley rebuilt. and use the 67 fuel line. to make a vapor fuel return line is not they way and your problem. that was for emissions.

Mar 16, 2010 | 10:40 PM

#13

shemp

Thread Starter

Drifting

Joined: Jun 2005

Posts: 1,974

Likes: 2

From: Crownsville Md.

Quote:

Originally Posted by Nowhere Man

if it was me I would sell the 68 carb and have your holley rebuilt. and use the 67 fuel line. to make a vapor fuel return line is not they way and your problem. that was for emissions.

Would it be ok to just block the vapor return line at the filter and use the carb and lines I just purchased? Shemp

Mar 16, 2010 | 11:12 PM

#14

67L36Driver

Safety Car

Joined: Feb 2003

Posts: 4,068

Likes: 27

From: St. Joseph Mo

Quote:

Originally Posted by shemp

Would it be ok to just block the vapor return line at the filter and use the carb and lines I just purchased? Shemp

Yes. That will work. Or get a filter same size/fittings as you have only without the vapor return.

Is your intake square bore (for Holly) or spread bore (for Rochester)?

I have an Edelbrock Qjet clone on a '68 #3883948 iron pass car intake on mine and it works great. Even the original air cleaner fits.

Mar 16, 2010 | 11:17 PM

#15

shemp

Thread Starter

Drifting

Joined: Jun 2005

Posts: 1,974

Likes: 2

From: Crownsville Md.

Quote:

Originally Posted by 67L36Driver

It's the original 68 intake (spread bore).Is that the Edelbrock #. I think the easiest route would be a new filter for about $8 rather than a new carb. Shemp

Mar 16, 2010 | 11:28 PM

#16

67L36Driver

Safety Car

Joined: Feb 2003

Posts: 4,068

Likes: 27

From: St. Joseph Mo

#3883948 is the casting number of the intake manifold.

Note: A #3883948 intake made for a '67 model will be a square bore for a Holly. The one I'm using is for a '68 full size car and is for a spread bore.

Casting Number is not the same as a part number.

Mar 16, 2010 | 11:29 PM

#17

Kerrmudgeon

Race Director

Joined: Mar 2009

Posts: 19,777

Likes: 4,592

From: Canada's capital

2020 Corvette of the Year Finalist (appearance mods)

C1 of Year Finalist (appearance mods) 2019

Those q-jets were always a hassel, Seemed like every one I came across had a big bog in it when you nailed it, you always had to screw around with changing metering rods to get them to run right. Spread bore Holley is the way to go.

Mar 16, 2010 | 11:41 PM

#18

67L36Driver

Safety Car

Joined: Feb 2003

Posts: 4,068

Likes: 27

From: St. Joseph Mo

Quote:

Originally Posted by kerrmudgeon

I suffered with a couple Holly 6210's before changed to a Qjet. Too much hassel with the fuel leaks and wimpy power valves.

Havn't touched the Edelbrock since I bolted it on 10 years ago.

It is somewhat lean at WOT.

Mar 16, 2010 | 11:49 PM

#19

Mike Ward

Race Director

Joined: Jul 2001

Posts: 15,892

Likes: 42

Quote:

Originally Posted by shemp

Also I just got the correct rochester carb for this motor. The fuel filter has a vapor return line where does it connect on the lower end? Is there supposed to be another line going back to the sending unit on the tank.

It's not a vapour return line and has nothing to do with emissions. Most C3s with a Qjet have a bypass line to return a small portion of the fuel flow back the tank. This recirculation reduces the temperature of the fuel in the pump inlet and in turn reduces or eliminates the possibility of fuel vapour lock. The act of bypassing the fuel also reduces excess inlet pressure to the carb slightly.

Nothing wrong with a qjet if it's set up properly and not fooled around with.