Champion RJ18YC6
The spark plug gap for a 1977 Olds 403 is listed as .060 inches.
The 403 is an Oldsmobile engine, the firing order is the same however, 1-8-4-3-6-5-7-2
NO. 403 is an Oldsmobile engine 400 is Pontiac engine no it dows not i have a Pontiac 400. uses diff. parts not interchangeable.403 is Oldsmobile
No, the 403 didn't come out till 1977.
Pontiac did not make a 403 but offered a Oldsmobile 403 in the trans am, lots of work and modification to put in a 1988
95 ft/lbs.
A stock 403 is rated at 185 hp
Intake manifold torque specifications for the Olds 403 is listed as 30 ft-lbs.
Around 180HP from the factory.
Yes. 403 is a small block with identical exhaust ports as a 350 and 330.
number for block should stamped in a small flat pad on front left side of block just under head gasket area. A large 403 should be cast into the left side of block just below freeze plugs
The Oldsmobile 403 is listed as having an oil capacity of 5 quarts (with filter change).