What should the timing be on a Pontiac 400?
Timing is set between 12-14 degrees at idle, for best start. Significant hesitation- (carb rebuilder says it is timing, because of timing gauge he has says timing is off?) when he corrects it car will not start. Tapping in the motor, seems to be from lifters area rear right side worse then left. Gets worse when motor warms up.
Where is the 1 cylinder on a Pontiac 400?
On Pontiacs, the #1 cylinder is on the driver’s side, which is furthest from the timing marks on the damper. A common mistake is to use the #2 cylinder on the passenger side because it is on the same side as the timing marks. Make sure you are using the #1 cylinder to time your 400.
What’s the sense of timing on a Pontiac?
What a big difference. Combined with the rebuilt carburetor and a decent torque converter, the car jumped off the light and chirped the tires in the 1st to 2nd shift under full throttle acceleration. The distributor was set at 12 degrees initial advance giving 32 degrees total mechanical advance by 3200.
What is the oil pressure on a Pontiac 400?
External oil pressure gauge says 60+ lbs on startup. 35+ warm idle 40+ at highway speed and 15+ at HOT idle. Checked on rear of motor at oil pressure sending unit. Removed the timing cover and checked the timing dots are lined up. They are.
Timing is set between 12-14 degrees at idle, for best start. Significant hesitation- (carb rebuilder says it is timing, because of timing gauge he has says timing is off?) when he corrects it car will not start. Tapping in the motor, seems to be from lifters area rear right side worse then left. Gets worse when motor warms up.
What kind of lift does a Pontiac 400 have?
Rebuilt 400 stock internals- comp cam something like (NOT EXACTLY!!) 246-269 with .444-.455 lift. High energy Comp -cam, I think. Small not lumpy. Hurricane intake- Rochester carb rebuilt- HEI distributor. Quick ratio rocker arms with polylocks lashed ½ turn past “0” lash.
What kind of engine did the Pontiac 428 have?
The 400-cid Pontiac V8 that bowed in 1967 Pontiacs was a bored-out version of the 389 and a new 428 was a bored-out 421. The extra cubes were added to mask the fact that Tri-Power options were no longer offered.
Where are the spark plugs on a Pontiac 400?
Hurricane intake- Rochester carb rebuilt- HEI distributor. Quick ratio rocker arms with polylocks lashed ½ turn past “0” lash. One at a time like a Pontiac as you turn the crank, with the spark plugs out starting a top dead center.