jims 489 big block

grumpyvette

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Gen 4, 454 block, .030” over, 4.281 bore, 4-bolt main
Honed with BHJ deck plate
Scat 4.25” forged crank, internal balanced
KB ICON series forged pistons 10 cc domes 1/16, 1/16, 3/16 ring package.
9.7:1 CR, pump gas
Total Seal file to fit rings, standard tension .020"/.022" ring gaps
Manley H-beam rods, 6.385”, ARP bolts
ATI balancer
Moroso 20403 pan
Moroso 22175 oil pump.
Comp Cams billet solid roller w/iron gear. .638/.643 net lift 249/254 duration at .050”. 110LSA installed at 106 ICL
Crane roller timing set with Torrington bearing
Bo Laws BLP 3-piece timing cover, nylon button
Jesel SS series shaft setup 1.7 ratio
TFS 3/8” pushrods
Isky 9945 Tool room 1.625” diameter valve springs.
ISKY EZ-X Roll lifters
GM “215” iron ovals, 111 cc, 2.25/1.88 valves, 9.7:1 CR (pump gas)
Edelbrock RPM Air Gap intake, gasket matched ports.
Holley 950 HP carb
½” phenolic spacer
Carter M61045 172GPH mech fuel pump
1-3/4” Black Jack headers, ceramic coated in/out
3” collectors, 3” exhaust, mufflers and full tailpipes
McLeod soft-lok clutch
Mcleod aluminum flywheel
Keisler RS 5-speed trans
QT scattershield with blockplate
Inland Empire 3” driveshaft, 1350 spicer u-joints
GM 12 bolt rear, welded tubes, TA cover
Moroso posi, 4.10 rear gears, Moser 30 spline axles
Rear; SSM lowers/edelbrock adjustable uppers
Stock front suspension, Global West upper bushings
Aluminum radiator, Windstar electric fans 180 t-stat
Stewart Stage 2 aluminum water pump
CS-105 alternator.
MSD distributor
MSD 6AL ignition
Autolite 66’s gapped at .038
__________________
Jim
My 70 Chevelle runs mid 11 second 1/4 mile times
 
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