I ran a '92 Caprice 5.7L service-replacement crate engine in my '88 K1500 for something like 18 years. Z-E-R-O problems with driveability on the stock computer and chip after I replaced a defective O2 sensor.
Therefore, I KNOW that the '92 Caprice cam will work. It will also give you approximately zero performance improvement. The cam is ultra-mild just like the stock cam.
HYDRAULIC ROLLER CAMSHAFT
INTAKE LIFT-.359" * EXHAUST LIFT.384" *
INTAKE DURATION @.050-186.5 * EXHAUST DURATION @.050-193.8
LOBE CENTER SEPERATION -110.3
CAMSHAFT MECHANICAL SPECS:
INTAKE VALVE OPENS @ -16.9 BTDC * INTAKE VALVE CLOSES @ 23.4ATDC * INTAKE LOBE CENTERLINE - 110.3
EXHAUST VALVE OPENS @ 25.6BBDC * EXHAUST VALVE CLOSES @ -11.9 ATDC * EXHAUST LOBE CENTERLINE - 110.3
The Caprice used flat-top pistons for another quarter-point of compression, too. The "most economical way" would be to buy a used-but-usable 1991--1993 Caprice/Roadmaster/Fleetwood Brougham 5.7L TBI engine from the Treasure Yard, and swap the whole engine. The downside is that most B-bodies used the 5.0L not the 5.7L, so they're somewhat scarce. GM quit selling the service-replacement engine ten-plus years ago.
All small-body HEI distributors have a melonized distributor gear, therefore they're all compatible with OEM roller cams IF (big IF) the gear is in good condition to begin with. New gears need to be de-burred with a jeweler's file before use.
There's plenty of aftermarket support for the roller-cam engines, so you could buy "everything" to fit a '92 Caprice 5.7L from GM or from aftermarket suppliers. You'd need the timing chain and gears to fit the roller cam, the cam and lifters, the retainers and spider, and shorter pushrods.
Of course, your block must have the tall lifter bores, the thrust-plate pad on the front, and the threaded bolt-holes for the dogbone spider.
How much MORE camshaft you could get by with is another story; and of course the cylinder heads are the swirl-port junk that kills higher-rpm power. The Summit "TBI" heads are probably a better upgrade than a camshaft change. If you use pushrod guideplates, the pushrods MUST be hardened. Otherwise, you're stuck with self-guiding rocker arms like stock.
