Would like to find the bore and stroke of a 1992 3.9L V-6.

Engine Mechanical Specifications (5.7 L)
Application
Specification
Metric
English
General Data
Engine Type
V8
Displacement
5.7 L
350 CID
RPO (VIN Code)
L31 (R)
Bore
101.63 mm
4.0012 in
Stroke
88.39 mm
3.480 in
Compression Ratio
9.4:1
Firing Order
1-8-4-3-6-5-7-2

no car stated, huge NPR truck no less.
no year stated
so no free book information on that engine,.
big diesel. 4HL1, no dash letter?
compression at spec.?
glow plugs work.,
filters clean. water in fuel,
does test fuel (spray'd) help? ???
injection problems
lack of startup air.(filter)


The 4HL1 is a common rail direct injection OHC 16V high-pressure fuel injection system diesel engine of 4.777 L capacity with electronic control system. Peak torque is 333 Nm, peak power is 140 PS (103 kW) at 3,000 rpm. Maximum torque is (34.0 kg m)'/1,500 rpm. Bore is 115 mm, stroke is 115 mm.
The 4HL1-N is a common rail direct injection OHC 16V high-pressure fuel injection system diesel engine of 4.777 L capacity with electronic control system. Peak torque is 333 Nm, peak power is 131 PS (96 kW) at 3,000 rpm. Maximum Torque is (34.0 kg m)'/1,500 rpm. Bore is 115 mm, stroke is 115 mm.
The 4HL1-TC is a common rail direct injection OHC 16 V turbocharged and intercooled high-pressure fuel injection system engine of 4.777 L capacity with electronic control system. Peak torque is 425 Nm, peak power is 160 PS (118 kW) at 2,700 rpm. Maximum torque is (43.3 kg m)'/1,500 rpm. Bore is 115 mm, stroke is 115 mm.
The 4HL1-TCS is a common rail direct injection OHC 16 V turbocharged and intercooled high-pressure fuel injection system diesel engine of 4.777 L capacity with electronic control system. Peak torque is 500 Nm, peak power is 179 PS (132 kW) at 2,700 rpm. Maximum torque is (51.0 kg m)'/1,500 rpm. Bore is 115 mm, stroke is 115 mm.

If the engine has a bore and stroke that are equal to each other is a square engine. An engine with a smaller bore than the engines stroke is undersquare. Engines with a larger bore then stroke are oversquare. If your engine is square the valves will be ok.

ENGINE 2 stroke single cylinder direct reed valve crankcase induction Liquid cooled 125 cc engine Cylinder size 124 8 cc Bore and stroke 54 x 54 5 mm 200 cc engine Cylinder size 175 3 cc Bore and stroke 64 x 54 5 mm 250 cc engine Cylinder size 247 7 cc Bore and stroke 72 5 x 60 mm 280 cc engine Cylinder size 272 2 cc Bore and stroke 76 x 60 mm 300 cc engine Cylinder size 294 1 cc Bore and stroke 79 x 60 mm I Cant put periods or commas so bare with me

1966 - 1969 with 4 Barrel Carb (L36)
(Low Compression Model)
Max Brake Horsepower - 390 @ 5200 rpm
Max Torque - 470 @ 3600 rpm
Stroke - 3.76
Bore - 4.251
Compression - 10.25
Firing Order - 18436572

1966 with 4 Barrel Carb (L72)
(High Compression Model)
Max Brake Horsepower - 425 @ 5600 rpm
Max Torque - 460 @ 4000 rpm
Stroke - 3.76
Bore - 4.251
Compression - 11.0
Firing Order - 18436572




283, 327, 396, 409 and 427 CID Engine 1965-1966
Firing Order 1-8-4-3-6-5-7-2




350 CID Engine 1969-1974 Corvette, 427 CID Engine 1969 Corvette
Firing Order 1-8-4-3-6-5-7-2


Hope this helps (remember to rate this answer)

2.2 liters 4 cylinder in-line front engine with 86 mm bore, 94.6 mm stroke, 10 compression ratio, double overhead cam and four valves per cylinder

95 LHS- 3,518 cc 3.5 liters 6 V front longitudinal engine with 96 mm bore, 81 mm stroke, 10.5 compression ratio, overhead cam and four valves per cylinder
95 Concorde - 3,301 cc 3.3 liters 6 V front longitudinal engine with 93 mm bore, 81 mm stroke, 8.9 compression ratio, overhead valve and two valves per cylinder

Some of the parts may enter change but they are diffrent. Best of luck!

What do you mean by "center bore"
Bore X stroke on the old Clubman 1275cc (Engine codes 12A and 12 H) is 70.61mm X 81.28mm

No. The factory installed V-6's and 5.7 and 7.4 engines. In 16 years anyone could have put any Chevrolet V-8 engine in it. If you need to know exactly what engine it is there are references that identify them by engine serial number. The serial number is on the right upper face of the block just in front of the head. You can also identify any of them by pulling a head and measuring the bore and stroke. One formula for displacement is: (Bore divided by 2 x bore divided by 2 )x 3.1416 x stroke x 8 = Displacement.

TCC stuck open in a 4T60E can be either the TCC solenoid gone bad,or the actual TCC valve and bore in the valvebody is worn out.I rebuild transmissions for a living,and i have a reamer for the TCC bore that oversizes the bore,and then install an aftermarket oversized valve to restore hydraulic integrity.What happens is,the valve is PWM (pulse width modulated) which means it basically vibrates in the bore,and strokes many many times per second.Well,all this pulsing wears out the bore,so it must be oversized.But when the bore becomes worn out,sometimes the valve will literally get stuck and won't move.