On a 1975 Dodge 440, the number 1 spark plug wire typically connects to the distributor cap terminal that is aligned with the number 1 cylinder, which is located at the front of the engine on the driver's side. The firing order for this engine is 1-8-4-3-6-5-7-2, so after placing the number 1 wire, you would follow the firing order counterclockwise around the distributor cap. Always double-check the specific configuration for your engine, as variations may exist.
start with dist cap and rotor
To adjust the timing on a 1975 Dodge 318, first ensure the engine is at operating temperature and then turn off the engine. Locate the timing pointer and the harmonic balancer, and use a timing light connected to the number one spark plug wire to check the timing marks. If adjustment is needed, loosen the distributor hold-down bolt and rotate the distributor slightly until the timing mark aligns with the specified degrees before top dead center (BTDC), then retighten the bolt. Finally, recheck the timing to ensure it is set correctly.
The firing order on all Chevrolet engines is 1,8,4,3,6,5,7,2. 1,3,5,7 are the left bank and 2,4,6,8 is the right bank and the distributor turns clockwise.
that should have the HEI distributor so the plugs should be set at .045
front drivers side
To time a 1975 VW bus, first, ensure the engine is at TDC (top dead center) on cylinder one. Use a timing light connected to the number one spark plug wire and the battery. Adjust the distributor until the timing mark on the crankshaft pulley aligns with the recommended timing spec (usually around 7.5° BTDC for stock engines). Tighten the distributor clamp and recheck the timing to ensure it hasn’t shifted.
1975 to 1978
1 - 3 - 4 - 2 The distributor rotor turns CLOCKWISE
it says right on the cap "1" but if it does not then it is directly above the rotor. if that doesn't help then it is the closest, straight to the radiator
The distributor cap order for a Chevy 283 varies depending on the year of the motor. A 1975 to 1991 has the number one cylinder at the top just to the left of center. The 1967 to 1974 distributor has the number one cylinder at the top just to the right of center. The firing order is 1, 8, 4, 3, 6, 5, 7, 2.
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.044 inch