Please visit our site for full details including the jerk comparison vs OEM.

URGE designs Jerk Camshafts

• We branded "Jerk Camshafts" as we optimize the lob profiles to reduce jerk, even with >1 mm lift vs OEM, we have lower jerk (change of acceleration or smoothness)
• Billet S7 tool steel, the stiffest camshaft material readily available minimizing deflection between #1 and #4
• Ground using CNC machine vs cam cards for most accurate grinding

RR Spec $1400

• IN ~13.5mm lift or ~1.5mm more than AP1, ~5 degrees more duration that OEM
• EX ~11.6 lift or ~0.7mm more than AP2, ~similar duration to keep torque

Tuned URGE cam vs Tuned OEM, +14 HP, +3 ft lbs (Note many other cam dynos are untuned OEM vs tuned, meaning most gains are from the tune, this is all cam gains)



Here is our built motor with our halo stroker kit, ITB and stoker header on 12.5 CR and pump gas with same cams. Over 300 WHP on mustang dyno or >380 at the crank.



We have 2 other specs in progress.

1. Stroker spec for 99mm strokes
2. 10K spec for 10K RPM

We also offer our Ultra Valve Spring Kit to support @ $600 vs $900 for comparable PSI valve spring kit

• High strength CrSiV with large wire diameter providing 341 lbs/in spring rate
• Reduced spring coils supporting higher valve lift up to 0.650” or 16.5mm
• Single spring design reducing spring weight ~10% vs OEM raising redline support (dual valve springs are heavier than OEM)
• Spring surface and heat treatment maximizes lifetime with no pressure degradation
• Strongest Titanium alloy (Ti-17) retainers @ ~30% higher strength and 7 points harder (HRC) vs typical Ti 6Al4V retainers
• Reusing OEM bases and AP1 keepers to keep cost down (30% lower cost than typical premium high RPM, high lift and long life springs)

 

what are the duration and lift for those three different camshafts. I see catcams has pretty aggressive profiles for vtec camshaft

 

We dont share the parameters of our camshafts publicly for a few reasons..

1. There are several ways to measure a camshaft, at the lobe, at the valve, with or without lash and several different common lift points. If a customer is comparing lift or duration that was measured differently, then info will not provide good info for them.
2. We have measured many camshafts and more than half of all advertised specs are inaccurate
3. Lift and duration really dont matter individually, it is how the cam performance on a particular situation (specific build and motor) and we publish those results
4. Finally, most think bigger is better and it is to a certain point. We have found a limit for different motors where bigger is worse across the board (not just in one area). So sharing our specific specs can be copied easily.

 

so how can we compare with your cam to other brands, such as 4 Piston Racing RR3; BC cam; Toda A2,B2,C2, H1; and also CAT CAMS

 

As noted in our post you really can not compare the cams on specs for the following reasons.

1. All of the other providers measure their cams at different duration, with or with out lash, etc so you could not compare them.
2. Again, we have measured most of the cams you mentioned and their advertised claims are not accurate.
3. Bigger is not better, we have gone too big in our testing and have gone much smaller on built motors and have received more power.

The best way to compare is to look at dynes and we have several dynes on our site.
Do you have any dynes on the above cams?

 

60 sets sold, with dozens of stock bottom F20/22C over 250 whp

Please email urge(at)urgedesigns.com for questions or quotes

We also offer Toda HD chain, HD TCT and Cam Gears

• Upgrading the TCT is a must as OEM TCT as Honda has provided notice for OEM TCT. Toda HD TCT is priced better than comparable options and not core swap is required
• Replacing the timing chain is recommended if you have over 100K miles due to likely chain stretch. Toda HD chain is more durable than OEM at similar price.
• Cam Gears are NOT needed for our cams, but they can help tune URGE designs Cams to squeeze more power out on built/custom bottom ends.
• On OEM bottom ends, Cam gears can provide more mid range by safely advancing cams with HD TCT/chain and proper P2V clearance

 

60 sets sold, with dozens of stock bottom F20/22C over 250 whp

Please email urge(at)urgedesigns.com for questions or quotes

We also offer Toda HD chain, HD TCT and Cam Gears

• Upgrading the TCT is a must as OEM TCT as Honda has provided notice for OEM TCT. Toda HD TCT is priced better than comparable options and not core swap is required
• Replacing the timing chain is recommended if you have over 100K miles due to likely chain stretch. Toda HD chain is more durable than OEM at similar price.
• Cam Gears are NOT needed for our cams, but they can help tune URGE designs Cams to squeeze more power out on built/custom bottom ends.
• On OEM bottom ends, Cam gears can provide more mid range by safely advancing cams with HD TCT/chain and proper P2V clearance