I have a 1978 El Camino with a mild 1973 350 2-barrel engine in it, and I want to rebuild the motor to produce about 450 horsepower safely on premium pump gas. These are the parts I'm looking into:
1) 62cc GM Vortec aluminum heads (GM claims they have more flow potential then any other heads they've produced)
2) Wiseco forged flat top pistons (10.6-1 compression with the 62cc Vortec heads) Is that too high of a compression ratio for 92 octane?
3) 750cfm Holley carburetor atop a Edelbrock Performer RPM intake manifold.
5) I'm not sure what camshaft yet, and I will also rebuild the bottom end with stronger rods and crank.
Do you think this build looks good so far for a reliable street engine in the 450hp range? Maybe with a hot roller cam or solid flat tappet with high lift?
David L, I'm literally changing every part on this engine except the block! And the block is going to be bored out to 355ci.
ALL THIS SOUNDS GOOD TO ME BUT IF YOU DO NT HAVE A 4 BOLT MAIN YOU SHOULD RE THINK WHAT YOUR DOING. 450 IS A LOT OF HP FOR A 2 BOLT MAIN. WITH THAT OLD OF AN ENGINE I WOULDNT BORE THE PISTONS NO MORE THAN .30 OVER SIZED. ALSO AT 10.6-1 COMP RATIO BE VERY CAREFUL OF THE SIZE CAM YOU CHOOSE. YOUR CAM LIFT AFFECTS COMP RATIO AS WELL THE MORE LIFT THE MORE COMPRESSION. 10.6-1 MAKE SURE YOU BUY THE VERY BEST MSD IGNITION, SPARK PLUGS AND SPARK PLUG WIRES.
Lunati Solid Roller Tappet Camshaft Solid Roller Ford SB 289 302 351W 510B5LUN, Lunati Hydraulic Roller Tappet Camshaft Chevy LT1 5.7L .560"/.565" Lift 60123, 1996 -1998 4.3 Liter 262-W/Marine (431-803186) Roller Tappet Camshaft, Generati, 1993 -1996 4.3 Liter 262-W/Marine (431-803186) Roller Tappet Camshaft, Swirl Po, 1996 -1998 4.3 Liter 262-W/Marine (431-803186) Roller Tappet Camshaft, Generati, 1993 -1996 4.3 Liter 262-W/Marine (431-803186) Roller Tappet Camshaft, Swirl Po, Lunati Hydraulic Roller Tappet Camshaft Chevy LT1 5.7L .447"/.471" Lift, Lunati Hydraulic Roller Tappet Camshaft Chevy SBC 327 350 400 .535"/.550" Lift, Thumpr Hydraulic Flat Tappet Camshafts OE Hydraulic Roller Camshaft For SB, Mutha Thumpr Hydraulic Flat Tappet Camshafts OE Hydraulic Roller Camshaft For SB, Big Mutha Thumpr Hydraulic Flat Tappet Camshafts OE Hydraulic Roller Camshaft Fo, Lunati Hydraulic Roller Tappet Camshaft Ford SB 289 302 351W .565"/.565" Lift, Lunati Solid Roller Tappet Camshaft Solid Roller Chevy BBC 396 454 .722"/.722", Lunati Hydraulic Roller Tappet Camshaft Ford SB 289 302 351W .500"/.510" Lift, Lunati Solid Roller Tappet Camshaft Solid Roller Chevy SBC .640"/.645" 50140SB, Lunati Solid Roller Tappet Camshaft Solid Roller Chevy LT1 5.7L .606"/.585", Lunati Hydraulic Roller Tappet Camshaft Chevy BBC 396 454 .625"/.625" Lift, Lunati Solid Roller Tappet Camshaft Solid Roller Chevy BBC 396 454 .804"/.755", COMP Cams Camshaft Custom Grind Street Roller Tappet Chevy Small Block Each, COMP Camshaft Mechanical Roller Tappet Adv Dur 300/304 Lift .672/.672 Ford 351W, COMP Camshaft Mechanical Roller Tappet Adv Dur 312/324 Lift .748/.720 Chevy BB, Lunati Solid Roller Tappet Camshaft Solid Roller Mopar Big Block RB 413 440, Isky Solid Roller Tappet Camshaft Solid Roller Chevy BBC 396 454 .640"/.650", Lunati Hydraulic Roller Tappet Camshaft Chevy LT1 5.7L .515"/.530" Lift 60121, Lunati Hydraulic Roller Tappet Camshaft BBC Gen VI 454 .595"/.612" Lift, Lunati Hydraulic Roller Tappet Camshaft Chevy LT1 5.7L .535"/.550" Lift 60122, Lunati Solid Roller Tappet Camshaft Solid Roller Ford SB 289 302 351W 50616, Lunati Hydraulic Roller Tappet Camshaft Ford SB 289 302 351W .571"/.587" Lift, Lunati Hydraulic Roller Tappet Camshaft Chevy SBC 327 350 400 .492"/.492" Lift, Lunati Hydraulic Roller Tappet Camshaft Ford SB 289 302 351W .522"/.522" Lift,
