Free build tools
Run the numbers
Three calculators for the things that matter at the strip — and the cover that keeps them on the road.
Quarter mile
ET Calculator
Estimate your quarter-mile elapsed time and trap speed from weight and power. Math runs live — no page reload.
lbs
hp
%
Estimated wheel HP: 446 whp
Estimated ET
11.42
sec
Trap speed
118.3
mph
Bracket class
11-Second Street
Want to insure this build? Get a quote in 60 seconds.
Highest-converting tool
Insurance Cost Estimator
A realistic annual premium range for your build before you ever talk to a broker.
$
mi
Estimated annual premium
$1,090
–
$1,840
per year
Your modifications increase premium by 24% versus a stock equivalent.
Estimate only — based on published Hagerty/Grundy rate guides. Real quotes vary by driver, history and location.
Get real quotes from specialist insurers.
Drivetrain
Gear Ratio Calculator
Find your vehicle speed at the shift point, then sanity-check against common muscle-car setups.
in
:1
:1
rpm
Speed at shift point
81.2
mph
Optimising your build? Make sure your insurance covers all mods.