-
-
Hydraulic-roller cams have become the new darling of the performance world. The least expe
-
Flat-tappet cams (below) are less expensive than hydraulic-roller cams (top), but a roller
-
Rocker arms are an easy way to add valve lift to an existing camshaft. Shown from the left
-
Rocker-arm ratio is based on the distance between the pushrod cup and the centerline of
-
More aggressive camshafts, especially hydraulic-roller cams, require stronger valvesprings
-
Crane makes an excellent H-11 Tool Steel spring that will fit the confines of the stock sm
-
ARP makes an excellent poly lock called the Perma-Lock, which offers a 12-point hex that p
-
Adjusting valves is easy if you remember this simple procedure. When the exhaust valve j
-
GM Performance Parts makes an interesting 1.330-inch-od spring for 96 LT4 engines. I
If cylinder heads are the heart of an engine, then the camshaft and valvetrain have to be the brains of the operation. Timing the opening, closing, lift, and duration of each valve event is central to increasing power and torque. While something this complex might seem expensive, the price of camshaft admission is surprisingly affordable.
Rather than deal specifically with camshafts in this particular story, well focus instead on several options that you can take concerning rocker ratios, poly locks for the street to maintain that valve lash, and how to save a little money on your next engine buildup using a hydraulic-roller camshaft. So climb on board as we take a high-tech ride on the valvetrain.
|
|
Automotive Racing Products (ARP)
531 Spectrum Circle
Oxnard
CA
93030
805-278-7223
|
GM Performance Products
Contact your nearest dealer
|
|
COMP Cams
|
Scoggin-Dickey Parts Center
Lubbock
TX
N/A
www.sdparts.com
|
Crane Cams
530 Fentress Blvd.
Daytona Beach
FL
32114
3-86/-252-1151
N/A
www.cranecams.com
| |