Pushrod Length Calculator

Calculate correct pushrod length for your engine build

Engine Modifications

Stock Pushrod Length (inches)

Block Deck Milled (inches)

Head Surface Milled (inches)

Cam Base Circle Change (inches, +/-)

Desired Lifter Preload (inches)

7.780"

Shorter pushrods needed (0.020" shorter)

Total Height Change0.020"

With Preload Adjustment7.810"

7.75" pushrod-0.030" from ideal

7.8" pushrod+0.020" from ideal

7.85" pushrod+0.070" from ideal

7.9" pushrod+0.120" from ideal