Wanted to try a lighter spring in my Autolite 4100, but didn't want to buy the entire kit. This spring is perfect. Approximately half as stiff as the stock spring, measured on an electronic scale. Secondaries open up by 3,500 now.
Verified purchase: Yes | Condition: New
Not painted so I'm not sure it's the correct spring. It's probably correct but I'd be happier if the end was brown like a Holley spring.
Verified purchase: Yes | Condition: New
It would be better to have the springs marked and a rating chart to know which ones are lower and higher rate.
Verified purchase: Yes | Condition: New
Works well.
Verified purchase: Yes | Condition: New
Worked out fine
Verified purchase: Yes | Condition: New
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