Quick Fuel 38-100QFT Vacuum Secondary Spring Kit - High Performance Carburetor Upgrade for Racing & Street Cars | Perfect for Drag Racing, Hot Rods & Muscle Car Tuning
$13.45
$24.47
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Description
Quick Fuel Vacuum Secondary Spring Kit
Features
Vacuum Secondary Spring Kit
Comes with 7 different springs
Allows you to change the rate at which the secondary open
Springs are listed from lightest to heaviest White, Yellow (short), Yellow, Purple, Plain, Brown, Black
Durable and long lasting
Reviews
- Verified Buyer
I was trying to get the secondarys fine tuned and thought that this would do it as both carbs have a lot of similarities. One of the things that's different is the size of the diaphragm. The 4100 is larger so therefore more powerful. I tried the strongest spring but it was weaker than factory. I ended up just stretching the stock one out to make them open later. Nice selection for a Holley though.
