COMP Cams CL11-601-4 Mutha Thumpr 287TH7 Flat Tappet Hyd. Camshaft and Lifters Kit for Chevrolet Big Block 396-454 EnginesThumpr 235 249 Hydraulic Flat Cam for Chevrolet Big Block 396 454 High performance street strip, needs 9: 1 compression, 2500+ stall, intake, gears and headers, rough idle.

Dimension Bore Inch 4

but are well suited to other types of competition engines

PN:  BB253J

a larger-than-stock billet trunnion package features captured needle bearings to help prevent failure

000" Bore 72-87   3 Pc

• High Performance Street • Stock Converter Ok • Best w/ 2000+ Converter & Gears

-complete arp part number 250-4203

Testing shows that a near stock LS7 engine (w/ FAST® 102mm Intake & Throttle Body) produced gains of 16+ horsepower

Magnum Timing Sets

Kit includes 26915-16 Beehive valve springs

V8 265-400

These high performance bolts are rated at a hefty 180