Barney Navarro-built Rambler turbo Indy motor
Navarro Rambler Indy six camshaft specs
Specs generated by Randy Guynn of Performance American Style
http://www.performanceamstyle.com/
Randy ran the cam on a profiler and obtained these
numbers, selecting both solid and roller lifters, and 1.7
rocker ratio. I've since worked out that this engine ran
with solid lifters and stock 1.5:1 rocker ratio, and I've
adjusted the numbers accordingly.
SOLID FLAT TAPPET LIFTER
Lobe separation 111.600
Checking height 0.050
Valve overlap 20.900
Intake Exhaust
Centerline 111.400 ATDC 111.400 BTDC
Open 10.700 BTDC 53.300 BBDC
Close 53.400 ABDC 10.200 ATDC
Duration 244.100 crank deg. 243.500 crank deg.
Area 24.330 Inch deg. 24.210 inch deg.
Lash 0.014 inch 0.016 inch
Rocker Ratio 1.500 1.500
Peak cam lift 0.317 inch 0.317 inch
Peak valve lift 0.476 inch 0.475 inch
Lift at TDC 0.070 inch 0.069 inch
Checking height 0.150
Valve overlap -63.700
Intake Exhaust
Centerline 111.400 ATDC 111.400 BTDC
Open 31.300 ATDC 11.300 BBDC
Close 10.400 ABDC 32.400 ATDC
Duration 159.000 crank deg. 159.000 crank deg.
Area 20.120 Inch deg. 20.220 inch deg.
Lash 0.014 inch 0.016 inch
Rocker Ratio 1.500 1.500
Peak cam lift 0.317 inch 0.317 inch
Peak valve lift 0.476 inch 0.475 inch
Lift at TDC 0.070 inch 0.069 inch
Checking height 0.200
Valve overlap -96.800
Intake Exhaust
Centerline 111.400 ATDC 111.400 BTDC
Open 47.800 ATDC 5.200 ABDC
Close 6.100 BBDC 49.000 BTDC
Duration 126.100 crank deg. 125.800 crank deg.
Area 17.390 Inch deg. 17.330 inch deg.
Lash 0.014 inch 0.016 inch
Rocker Ratio 1.500 1.500
Peak cam lift 0.317 inch 0.317 inch
Peak valve lift 0.476 inch 0.475 inch
Lift at TDC 0.070 inch 0.069 inch
ROLLER LIFTER
Lobe separation 111.600
Checking height 0.050
Valve overlap 44.200
Intake Exhaust
Centerline 111.600 ATDC 111.600 BTDC
Open 22.400 BTDC 65.000 BBDC
Close 64.100 ABDC 21.800 ATDC
Duration 266.500 crank deg. 266.700 crank deg.
Area 28.360 Inch deg. 28.450 inch deg.
Lash 0.014 inch 0.016 inch
Rocker Ratio 1.500 1.500
Peak cam lift 0.317 inch 0.317 inch
Peak valve lift 0.476 inch 0.476 inch
Lift at TDC 0.106 inch 0.104 inch
Checking height 0.150
Valve overlap -31.100
Intake Exhaust
Centerline 111.600 ATDC 111.600 BTDC
Open 15.200 ATDC 27.600 BBDC
Close 26.500 ABDC 15.900 BTDC
Duration 191.300 crank deg. 191.700 crank deg.
Area 24.590 Inch deg. 24.650 inch deg.
Lash 0.014 inch 0.016 inch
Rocker Ratio 1.500 1.500
Peak cam lift 0.317 inch 0.313 inch
Peak valve lift 0.476 inch 0.469 inch
Lift at TDC 0.106 inch 0.104 inch
Checking height 0.200
Valve overlap -65.500
Intake Exhaust
Centerline 111.600 ATDC 111.600 BTDC
Open 32.500 ATDC 10.300 BBDC
Close 9.500 ABDC 33.000 BTDC
Duration 156.900 crank deg. 157.300 crank deg.
Area 21.530 Inch deg. 21.790 inch deg.
Lash 0.014 inch 0.016 inch
Rocker Ratio 1.500 1.500
Peak cam lift 0.317 inch 0.317 inch
Peak valve lift 0.476 inch 0.476 inch
Lift at TDC 0.106 inch 0.104 inch