Big Block (COPO) Carburetor return spring

TFox07 · #1 10-02-2022, 06:40 PM

I have purchased a few of these springs. They're weak and won't put it back to idle. I've shortened them and still have the same problem. I can't imagine others haven't experienced the same issue. Any suggestions would be greatly appreciated.

**R68GTO** · #2 10-02-2022, 10:09 PM

Along for the ride, I have the same issue with this spring.

TFox07 · #3 10-03-2022, 12:08 AM

Least I know I'm not alone. Thx for the reply.

**luzl78** · #4 10-03-2022, 12:36 AM

I also am looking for a stronger spring.

**68 DANA** · #5 10-03-2022, 02:55 AM

I experienced the same issue. What options are out there?

Lee Stewart · #6 10-03-2022, 02:03 PM

How about this one??

https://www.ss396.com/chevelle/ACS-0069.html

**luzl78** · #7 10-03-2022, 08:17 PM

That should be a lot better. A lot more springs

ban617 · #8 10-06-2022, 02:53 PM

I would have thought that a 427 would have had 2 springs on the carb … I guess it probably didn’t matter much because in Nhra & most drag racing have a rule 2 return springs on the carb …

**68 DANA** · #9 10-15-2022, 11:17 PM

Quote:

Originally Posted by Lee Stewart

How about this one??

https://www.ss396.com/chevelle/ACS-0069.html

That will work, but that spring is for a 68 model year, 302 Z28, 396/427 GM#3923501.

**68 DANA** · #10 10-15-2022, 11:24 PM

Quote:

Originally Posted by ban617

I would have thought that a 427 would have had 2 springs on the carb … I guess it probably didn’t matter much because in Nhra & most drag racing have a rule 2 return springs on the carb …

I ended up extending the two springs and interlaced them together. That arrangement worked.

The Following User Says Thank You to luzl78 For This Useful Post:
Lee Stewart (10-03-2022)

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