ATK HP291P Chevy 350 Base Engine 325HP

Classic 350 with great street manners, and vacuum for all your power accessories. HP: 330 TQ: 380 Block: OE block 4 bolt main 1pc seal 1987-2000 Bore/Stroke: 4.040 x 3.480 Displacement: 350 Crankshaft: OE Reground external balance rear of crank/internal balance front of the crank Rods: OE powder metal 5.7" Pistons: Hypereutectic 9.1:1 compression Rings: Moly Camshaft: Hyd. flat tappet Cam Specs: 224/234 @50 .465in/.488ex 112LSA Timing Chain: Double roller Cylinder Heads: ATK cast iron 76cc/165cc 1.94/1.50 Rocker Arms: Stamped steel 1.5 ratio Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some corvettes and 62-67 chevy II's) Oil Pump: Melling high volume Recommended Components: Balancer: PowerBond internal balance 8" #PB1046-N Flexplate/Flywheel: Pioneer #FRA-159 external balance 168 tooth Intake Manifold: Weiand stealth dual plane #8150 Distributor: HEI (Iron gear) Water Pump: OE long pump Carburetor: Quick Fuel 680CFM vacuum secondary's with electric choke #HR-680 Fuel Pump: Holley mechanical 110GPH #12-327-11 Spark Plugs: Champion #RV12C Spark Plug Wires: 8mm Engine Info: Oil: Conventional / Non Synthetic 10W30 with Comp Cam zinc additive #159 for first 3000 miles Oil Filter: Wix or K and N per application Timing: 34-36 Degrees Spark Plug Gap: .035" Firing Order: 18436572 Octane: 91+