Anyone know of any curve kits that are quality made? (USA)

Just blew this up!

 

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yes... GM made millions and millions of good weights, and they can be found under the hoods of millions and millions of cars and trucks in junkyards..

i got a Crane adjustable vacuum advance can for my Camaro last year... in the instructions, it specifically says to use the GM weights because no one in the aftermarket makes good ones.

 

Yea figured that and they all weigh different making it difficult when u change springs go get it just right had it all dialed in for the timing to come in when I want it SOAB!

 

The differences in most HEI weights aren't that great, despite the myriad of different numbers they can have stamped into them. Just grab a couple sets and try them out.

 

What's the deal with the ones with plastic bushings?

 

They all come with those. They are spacers. There are a few different hole sizes depending on which distributor you have. So they just use the plastic spacers to make it work with all of them.

 

These ones didn't have it I know the ones that came with the distributor did but not in the curve kit