It all depends on the configuration of the engine. If it's a mild, hydraulic cammed street engine, probably 3.73 or 4.11. A high-revving roller cammed engine would need more like 4.88 or 5.13.
Your goal would be to have the engine at it's horsepower peak or slightly higher when going through the traps.
You need to use a gear puller, as it is a press on, taper fit.
A small two-jaw or three-jaw gear puller works fine.
No the distributor gear that is on the end of the distributor is to small for the big block cam shaft.
Sorry that's not nearly enough info. Year, make, Model, And more details.
The cam gear is on top/ and the crank gear is on top. Both at 12:00.
There are two sizes of ring gears on small block chevies. You probably have the starter for the large ring gear but need the starter for the small ring gear.
No.
Open the cover, count the teeth on the big gear ( the ring gear ) next count the teeth on the small gear ( the pinion gear). Divide the big gear by the little gear and that is your ratio.
Count the # of teeth on the ring gear. Now count the # of teeth on the pinion gear. Now divide the small # into the big # and that will be your gear ratio.
Firing occurs throughout the rotation of the top gear (camshaft gear). Each cylinder fires at a different point of the rotation of the gear.
They used a few of them. Open the cover, count the teeth on the big gear ( the ring gear ) next count the teeth on the small gear ( the pinion gear). Divide the big gear by the little gear and that is your ratio.
To know for sure, You need to remove the big metal plate on the rear end housing and count the # of teeth on the BIG round gear / Ring gear. Then count the teeth on the small round gear / pinion gear that sets deep in the housing and runs on the big gear. Then divide the small # into the high # and that will be you gear ratio.