I am very interested in the Comp Cams 274: it has 230/236 duration and .487/.490 lift. I am wondering if you think it's TOO BIG for my heads(cast iron L98)? CHP did a test with L98 heads that used a 268 cam it features 224/230 duration. The cam worked wonderfully loosing no low end. I am not afraid of losing a few lbs of torque below 3000rpm just not a ton. My car is relatively light weighing only 3465 w/driver, and geared very well. A list of the mods impacting on the cam are listed below. Thanks. - JDMZ28


89' vette 350 block, 9.3:1, Holley 650 DP, Weiand action plus intake (0-6000rpm), cast iron center bolt heads, 1 5/8" headers, no cat, 2 1/2" Flowmaster catback, Mallory coil, T5 with 3.35 1st gear, 3.73 posi, ET 13.22@ 106.4MPH


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1986 CAMARO Z28 -> 151,000 original miles, 43,000 on 89' vette 350 block, Holley 650 DP, Weiand intake, 1.6 rockers, 1 5/8" headers, no cat, 2 1/2" Flowmaster catback, Mallory coil, March pulleys, T5 with 3.35 1st gear and 0 miles, 90% Centerforce clutch, 3.73 posi, Eibach 1" drop springs, Spohn LCA's, Spohn adjustable panhard rod, Subframes connectors, polyurethane swaybar bushings/endlinks, 2 12" Sound Streams, 2 Infinity 6X9's, 2 Pioneer 6X9's, 800 watt Lanzar Vibe amp. ET 13.22@ 106.4MPH Next mods-> Homemade ram air, B&M shifter, Extreme Energy 230/236 cam.

It should work just fine with no problems. Factory springs are marginal for that cam. Use the ones comp recomends.