I have a 318 bored +.030 to 3.94 " with internaly balanced Scat 4" stroke cast crank Scat I beam floating 6.123 rods with .984 pins and Icon Forged dished pistons which makes 390 CI 9.79 compression runs on 93 pump gas stock 360 heads #587 they have been milled .060 ported etensivley and flow 182 cfm on intake victor 340 intake matched porting cam is 508 hydraulicc flat tappet roler rockers I shift at 6200 it runs 6.38 in the 1/8 mile in my 84 Charger tube frame car weighs 2420 with out driver 410 gears .so yes a 318 will haul ***.