The LS is great for drivability in most performance cars and the ASA cam still drives decent even though it is a bigger cam than the stock cam. However...the ASA cam has an attitude. It sounds tough and it pulls hard. The engine likes to run 2K rpm and above which is fine with me. Less than 2K and there is slight surging due to the tight lobe separation numbers. The stock 430 HP engine is more like 450 HP and definitely has better street manners especially at idle and at low rpm cruising. Pulls more vacuum abs idles smoother. Probably why GM used that cam design...targeted for every kind of driver that is behind the wheel. With every jump in cam duration...the idle becomes more aggressive as does the performance. If you are looking for dead flat idle and big vacuum numbers for brakes, etc...the stock engine might be more in line with your goals. Cam swaps on LS engines are relatively easy...but you need to tune with every jump in cam.
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Skinned knuckles and empty wallet! Could I be any happier?
66 GTO Convertible. LS3-525 HP. Legend LGT700 5-speed, Wilwood 4-wheel disc brakes, Ridetech coil over front susp, PMT rear susp, Hotchkis bars, Billet Specialties 18" Dagger's (18X9 rear, 18X8 front).
2002 Ram Air WS.6 convertible Trans Am. Wife's car.
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