When did the Pontiac V-8 crankshaft come out?
Pontiac V-8 crankshaft part numbers and specifications 1955-1981. Feel free to contribute. This is a work in progress and not guaranteed to be correct. Pre-1964 cranks must be machined to fit Turbo Hydramatic torque converters.
What are the dimensions of a Pontiac crankshaft?
Depending upon the manufacturer, bearings are available in standard dimensions, .001- inch undersize and then in .010-inch increments. Present undersize is up to .030 inch for main journals and .040 inch for Pontiac- and Chevy-size rod journals. You may need to check with the manufacturer for current availability.
How much bearing clearance do I need for a Pontiac V-8?
Generally, a high-performance engine requires about .001 to .0015 inch of bearing clearance for each inch of journal diameter. Pontiac originally specified about .002 inch of rod journal clearance and .0025 inch of main journal clearance for its V-8s.
What kind of bearing does a 6202 crankshaft have?
Bearing is slip fit into crank with shield to the outside. The 6202 is available with shields or seals on both sides to keep dirt out.
What was the diameter of a Pontiac rope drive?
Another nifty detail about the rope drive was how spindly the driveshaft was — it wasn’t really a rope, but at five-eighths of an inch in diameter (three-quarters of an inch for manual-transmission cars), it looked pretty darn close. Typical prop shafts of the era were on the order of 2.25 inches or more.
What kind of steel is in a Pontiac V-8?
AS = ARMA STEEL = PMI Pearlitic Malleable cast iron. ARMA STEEL logo may not be present on all cranks. ARMA STEEL is not steel, but a form of cast iron. ARMA STEEL was registered trademark #0393916 GM used starting October of 1937.
How big is the pilot bearing on a Pontiac V-8?
Pilot bearing is # 7109 (GM part number 15533265) Size is 1.3780″OD x 0.5906″ID x 0.3543″W (35 mm OD x 15 mm ID x 9 mm W) Starting around 1966-1967, not all cranks used with automatic transmissions were machined for a pilot bearing.
When did the 3 inch crankshaft come out for the Pontiac V-8?
The 3-inch unit was used in all V-8s up to 400 inches produced between 1959 and 1979. The 3.25-inch unit was introduced in the early 1960s for the 421, and is found in all other Pontiac engines displacing up to 455 ci.
Can a BOP one piece gasket work on a Pontiac V-8?
The BOP one piece oil pan gasket works with ALL Pontiac V-8’s ’59-’81. The rear cap area cross-section is square like the cork so it fits perfectly into the main cap with the groove (’59-’72). We added the tabs (’73-’76) and most after mark et pans Canton , Milodon, etc.)
What was the displacement of the Pontiac V-8?
Forward/ rearward thrust is taken up at the fourth main journal. Enlarging bore diameter and adding crankshaft stroke length were ways that Pontiac increased the displacement of its original 287 to an eventual size of 455.
Another nifty detail about the rope drive was how spindly the driveshaft was — it wasn’t really a rope, but at five-eighths of an inch in diameter (three-quarters of an inch for manual-transmission cars), it looked pretty darn close. Typical prop shafts of the era were on the order of 2.25 inches or more.