Callies Finish Ground Camshafts - Godzilla Hydraulic Rollers
With a wide selection of 7.3 Godzilla profiles, we have a camshaft to fit 95% of all applications from a mild daily driver Pick-Up truck to a Bracket Race engine.
While the installer is responsible for checking Valve to Piston Clearance and accurately Degree in the camshaft with the appropriate timing set, the majority of these camshafts were designed to clear the stock bottom end. We recommend a VCT Limiter or Lockout to prevent Piston to Valve issues if the VCT fails. Most of these cams also respect the OEM Rocker Arm geometry to prevent over travel of the rocker arm and to prevent excessive side loads on the valves which leads to valve guide wear.
****Scroll to the bottom of the page for all the cam specs, choose the camshaft and the associated part numbers are listed in the drop down box (depending on your browser you may have to open the file)****
All our camshafts are listed based on Intake Duration at 0.050" lift.
A basic rule of thumb for choosing Intake Duration is pictured
These are starting points on choosing a camshaft. Bigger is usually not better, the cylinder head flow, engine displacement and application are a few of the many variables in choosing a camshaft. We publish all the data to better educate the Customer.
Callies fully finished camshafts are machined and heat treated entirely in house. This continuity of manufacturing allows Callies to deliver high quality camshafts on schedule. Our finished cams are ground with the latest Landis CNC technology. They are ADCOLE and Jenoptik inspected for accuracy, making them the most consistent cams on the market today. If required, your cams can be finished with inverted flank lobe profiles and complex VVT oil channels and drillings.
Callies Cam Research Lab – Valvetrain durability is a key ingredient to the success of every engine. The Callies Cam Research Lab has been established to guarantee that our cams are capable of extended life cycles in abusive applications. When combined with our metallurgical capabilities, the Callies Cam Research Lab allows evaluation of lobe profiles, valvetrain systems and processing methods like no other cam company. Spintron testing enables our engineering staff to evaluate valvetrain stability in minute detail up to 11,000 RPM. Programmable test cycles allow complete event simulation. Sixteen channel data acquisition can provide monitoring of temperatures, pressures, flows, loads and strain.
Godzilla N/A 220
Part #: 175-002
Specs: 220°/226° @ .050", .630"/.621" lift, 111°+6 LSA
Powerband: 1,800–5,700 RPM
Notes:
• Mild NA cam designed for strong low-end
and midrange torque in street and tow oriented builds.
• Early intake closing from +6 advance
produces excellent throttle response and
off-idle punch.
• High lift profiles take advantage of the
Godzilla’s robust valvetrain and factory-style
ported heads.
• Ideal for heavy vehicles, work trucks, and
daily-driven swaps needing vacuum stability.
• 111° LSA creates a light performance lope
without compromising drivability.
• Works with stock converter; gains increase
with long-tubes and a performance tune.
• Power Gains vs. Stock: +25–35 HP with
supporting bolt-ons.
Godzilla N/A 222
Part #: 175-017
Specs: 222°/238° @ .050", .635"/.639" lift,
111.5°+5.5 LSA
Powerband: 2,200–6,200 RPM
Notes:
• Balanced street/strip profile that boosts
midrange grunt and extends top-end
breathing.
• Staggered duration improves exhaust
scavenging—useful for the Godzilla’s high displacement NA airflow needs.
• High-lift lobes maximize cylinder fill when
paired with ported heads or upgraded
intakes.
• Slightly choppy idle with strong midrange
torque for performance trucks and muscle car swaps
• Prefers a mild converter in heavy vehicles
(2400–2800 RPM).
• Responds well to full exhaust and 10.5:1–
11.5:1 compression.
• Power gains vs. stock: +35–45 HP with
typical NA mods
Godzilla N/A 230
Part #: 175-009
Specs: 230°/242° @ .050", .662"/.662" lift, 111°+5
LSA
Powerband: 2,800–6,700 RPM
Notes:
• Aggressive hot-street cam delivering
excellent high-RPM airflow while retaining
strong midrange torque.
• .662" lift takes full advantage of well-ported
7.3 heads and large-bore induction systems.
• Tight 111° LSA enhances low- and midrange
torque while maintaining punchy top-end
power.
• Noticeably lopey idle; best with a 2800–
3200 stall converter for heavier vehicles.
• Benefits greatly from long-tube headers,
upgraded springs, and free-flow intake
systems.
• Suitable for 10.8:1–11.8:1 compression NA
builds.
• Power Gains vs. Stock: +45–60 HP with
supporting engine mods.
Godzilla N/A 234
Part #: 175-013
Specs: 234°/246° @ .050", .662"/.662" lift, 112°+5
LSA
Powerband: 3,000–7,000 RPM
Notes:
• High-RPM naturally aspirated cam
engineered for aggressive street/strip
applications.
• 112° LSA broadens the powerband slightly
while maintaining crisp midrange strength.
• Excellent pairing for CNC-ported heads,
long-tubes, and high-flow intake manifolds.
• Rough, deep idle; requires converter
(3000+) and proper gearing in heavy
vehicles.
• Optimized for 11.0:1–12.0:1 compression
ratios to maintain dynamic cylinder
pressure.
• Strong gains from 5000–7000 RPM with
stable valvetrain setup.
• Power Gains vs. Stock: +55–70 HP
depending on airflow mods.
Godzilla N/A 244
Part #: 175-014
Specs: 244°/256° @ .050", .662"/.659" lift, 114°+5
LSA
Powerband: 3,400–7,300 RPM
Notes:
• Max-effort street/strip profile intended for
high-compression, fully supported NA
builds.
• Broad 114° LSA improves top-end stability
and widens the usable RPM band.
• Stronger exhaust duration enhances
scavenging at high RPM—ideal for ported
heads.
• Produces a very aggressive idle character
with a deep, choppy cadence.
• Requires 3200–3600+ stall and performance
gearing for optimal acceleration.
• Best paired with 11.2:1+ compression, large
intake plumbing, and long-tubes.
• Power Gains vs. Stock: +65–80 HP in well matched NA builds.
Godzilla N/A 252
Part #: 175-023
Specs: 226°/238° @ .050", .630"/.621" lift, 114°+4
LSA
Powerband: 2,400–6,400 RPM
Notes:
• Mild–medium boost cam designed for
strong midrange torque and clean airflow
integration with centrifugal units.
• 114° LSA with +4 advance increases boost
recovery and maintains crisp throttle
response.
• High-lift lobes improve cylinder fill,
especially useful with intercooling and
efficient compressor maps.
• Excellent for street-driven ProCharger /
Vortech setups making 6–12 psi.
• Strong idle quality with a noticeable but
controlled performance lope.
• Works well with stock bottom end; ideal for
550–750 HP builds depending on blower
size.
