We offer 5 stages of SPORT CAMS performance VCT camshafts for 2.0L/2.5L Mazda and 2.5L Ford Duratec engines (6 tooth cam trigger). These cams cover a wide range of applications from mild pump gas bolt-on equipped engines up to wild all-out high rpm track terrors!
Stage 1 cams are for unopened 2L & 2.5L n/a engines and also work extremely well in turbo engines
Stage 2 cams work well in unopened Hot-Street 2L & 2.5L n/a engines
Stage 3 cams are similar in duration to Stage 2 but require aftermarket pistons with deeper valve reliefs.
Stage 4 cams for high compression street engines that have aftermarket pistons with deeper valve reliefs
Stage 5 cams are for racecars with 12:1 compression or higher.
During back to back dyno testing on a mild 2.5L Ford Duratec street engine we logged the following gains:
Stage 1 SPORT CAMS gained +19hp & 18ft.lbs
Stage 2 SPORT CAMS gained +27hp & 15ft.lbs
Stage 3 SPORT CAMS gained +29hp & 13ft.lbs
At no point above 3600rpm did the SPORT CAMS make less power than OEM cams, and in addition to the huge gains across the middle part of the powerband, at 7200rpm the cams gained:
Stage 1 SPORT CAMS gained +18hp!
Stage 2 SPORT CAMS gained +35hp!
Stage 3 SPORT CAMS gained +43hp!
All testing was done on the on our engine dyno with a street 2.5L Duratec one of our employees built for his son's street car. Engine specs are as follows:
Esslinger upgraded Valvespring kit
Esslinger 13:1 compression pistons
MX-5 intake manifold w/ 62mm cable throttlebody
Esslinger spec Cometic Head Gasket
1-5/8" to 1-3/4" header w/ merged collector
Tuned with an AEM Infinity 508 ECU
Lucas Oil 30wt Break-in oil
No porting, no oversize valves, not even a performance valvejob!
Stage 1: Intake - .393" lift & 220deg duration @ .050", Exhaust .352" lift & 219deg duration @ .050"
Stage 2: Intake - .400" lift & 238deg duration @ .050", Exhaust .400" lift & 227deg duration @ .050"
Stage 3: Intake - .429" lift & 235deg duration @ .050", Exhaust .397" lift & 233deg duration @ .050"
Stage 4: Intake - .460" lift & 246deg duration @ .050", Exhaust .400" lift & 238deg duration @ .050"
Stage 5: Intake - .477" lift & 254deg duration @ .050", Exhaust .400" lift & 243deg duration @ .050"
All SPORT CAMS are sold as a pair of cams ground on brand new OEM cam cores and include our hardened shims to maintain the ability to use the OEM range of cam buckets for lash adjustment!