Vortecpro 427 L88 Engine Build

4.350 X 3.765, RaceTec pistons, 1.5/1.5/3.0 ring pack, 10.2 compression, Scat 6.385 I beam rods reworked, crank indexed and stroke set, .010/.010. Redline solid roller, .630/.630/260/270/108, Morel lifters, Harlan Sharp 1.8 intake rockers, Scorpion 1.7 endurance exhaust rockers. .080 Wall Smith Bros chromoly pushrods, Comp Cams 3/8 guide plates, ARP rocker studs. Welded 840 GM rectangle port closed chamber heads, 11/32 one piece bronze valve guides honed to size, Ferrea 2.250 intake valves, Ferrea 1.880 exhaust valves cut down to 1.800, fully ported, 370 CFM @ 28 inches, Edelbrock performer RPM intake, 850 Holley, 1 inch open spacer. GM 4 quart pan modified for oil control, 10/40 Maxima oil, six 51061 oil filter. Tested on 91 octane pump gas. 652 HP @ 6600-6700 RPM, 590 TQ @ 5000 RPM.

Professional Engine Building 201