Power Piston Spring Assortment - Rochester Quadrajet Carburetor Parts
Power Piston Spring Assortment - Rochester Quadrajet Carburetor Parts
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Quadrajet / Dualjet Power Piston Spring Assortment, 4 color coded springs
Our Part # [3601]

Quantity1+2+ 10+ 
Price for each$9.50$8.55$7.60
Your savings- 10%20%

Four color coded power piston springs, allow for fine tuning of primary metering rod engagement. Great aid when tuning for a larger than stock camshaft. Engines that produce less idle vacuum will require a softer spring.

How we selected these 4 springs:
QJP built a test fixture that allowed us to vary the manifold vacuum to be able to test the rates of springs. After testing many springs we determined that these 4 power piston springs gave a nice spread to be able to accommodate the needs of engines, from stock to racing cams with greatly reduced manifold vacuum.

Spring Colors:

Yellow ---- Silver ---- Black ---- Blue

<--Weakest to Strongest Spring--->


You want to use the strongest spring possible that will NOT begin opening at idle.

Spring / Inches of Vac. / Length
Yellow: / (2-7) / 0.950"
Silver: / (4-9) / 1.020"
Black: / (5-9) / 0.950"
Blue: / (8-12) / 1.450"
Note:
Inches of Vacuum are to be used for estimates only. Condition of power piston and bore can affect and change inches of vacuum.

Fits:
Rochester Quadrajet Carburetors (except electronic models)
Rochester Dualjet Carburetors (except electronic models)
Q3601

This product was added to our catalog on Tuesday 06 April, 2010.
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