Ignition timing is like seasoning: some is good, but too much ruins the results. Bumping up the ignition timing on pushrod 5.0s is a time-honored trick to wake up the under-hood lump. The EFI system ...

For years, beltdriven timing drives have been the accepted standard in NASCAR Nextel Cup racing. The same holds true in the Busch Series and Truck Series as well as other top touring racing series.

Duvernay has the highest stock output production Quad 4: the 190-hp 1991 to 1992 RPO W41. The 1993 W41 lost 10 hp due to smaller exhaust ports. I have a 1992 Olds Achieva SCX with a W41 Quad 4 engine ...

Why timing matters: Proper synchronization between crankshaft and camshaft ensures valves and pistons move in harmony, preventing performance loss or catastrophic engine damage. Tools and techniques: ...

It's not your good 'ol small-block, so pay attention. Setting up a new bump stick in Gen III and IV engines requires the same base tools we're familiar with and a few new tools too. We've all read the ...