Need Gen 5 BBC info
October 17th, 2018, 7:45 PM
#1
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Need Gen 5 BBC info
I'm working on a GM 502 which I think is a Gen 5 version as it does not have provisions for a mechanical fuel pump.
I thought all BBC engines after the MK IV would have roller cams. This motor has a hydraulic flat tappet cam????
It also has a sheet metal MK IV like front cam cover? Again I thought it would have a cast aluminum cover??
In the lifter valley, what are the three cast in block bosses with plugs in them??
Can I use a gen 6 cam in the engine?
The block casting# is; 14096859 Mortec says; Gen 5 502
Head casting# is;14097088
I need educated on GEN 5 BBC
Any help is appreciated.
I thought all BBC engines after the MK IV would have roller cams. This motor has a hydraulic flat tappet cam????
It also has a sheet metal MK IV like front cam cover? Again I thought it would have a cast aluminum cover??
In the lifter valley, what are the three cast in block bosses with plugs in them??
Can I use a gen 6 cam in the engine?
The block casting# is; 14096859 Mortec says; Gen 5 502
Head casting# is;14097088
I need educated on GEN 5 BBC
Any help is appreciated.
October 18th, 2018, 3:50 PM
#2
CF Monarch
I'm working on a GM 502 which I think is a Gen 5 version as it does not have provisions for a mechanical fuel pump.
I thought all BBC engines after the MK IV would have roller cams. This motor has a hydraulic flat tappet cam????
It also has a sheet metal MK IV like front cam cover? Again I thought it would have a cast aluminum cover??
In the lifter valley, what are the three cast in block bosses with plugs in them??
Can I use a gen 6 cam in the engine?
The block casting# is; 14096859 Mortec says; Gen 5 502
Head casting# is;14097088
I need educated on GEN 5 BBC
Any help is appreciated.
I thought all BBC engines after the MK IV would have roller cams. This motor has a hydraulic flat tappet cam????
It also has a sheet metal MK IV like front cam cover? Again I thought it would have a cast aluminum cover??
In the lifter valley, what are the three cast in block bosses with plugs in them??
Can I use a gen 6 cam in the engine?
The block casting# is; 14096859 Mortec says; Gen 5 502
Head casting# is;14097088
I need educated on GEN 5 BBC
Any help is appreciated.
502 HO Tech Specs
- Part Number: 12568778
- Engine Type: Chevy Big-Block V-8
- Displacement (cu. in.): 502
- Bore x Stroke (in.): 4.470 x 4.000
- Block (P/N 19170540): Cast-iron with four-bolt main caps
- Crankshaft (P/N 10183723): Forged steel
- Connecting Rods (P/N 19170198): Forged steel, shot peened
- Pistons (P/N 12533507): Forged aluminum
- Camshaft Type (P/N 24502611): Hydraulic roller
- Camshaft Lift (in.): .510 intake / .540 exhaust
- Camshaft Duration (@.050 in.): 211° intake / 230° exhaust
- Cylinder Heads (P/N 12562920): Iron rectangular port; 118-cc chambers
- Valve Size (in.): 2.190 intake / 1.880 exhaust
- Compression Ratio: 8.75:1
- Rocker Arms (P/N 12523976): Stamped steel
- Rocker Arm Ratio: 1.7:1
- Water Pump (P/N 19168606): Cast-iron, long-style
- Flexplate (P/N 10185034): 14"
- Recommended Fuel: Regular Pump
- Ignition Timing: 32° Total @ 4,000 rpm
- Maximum Recommended rpm: 5500
- Balanced: External
