Gear Drive Question
Race Director
Joined: Jan 2000
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From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
The bevel goes back against the crank to allow for the fillet radius where the snout of crank is machined. Should be a timing dot on the other side to line up with the dot on the cam gear.
Don't worry about valve position at this point. Line up the dots with crank gear at 12 oclock and cam gear at 6 oclock. That will have #6 at TDC compression and #1 with valve open on overlap. When you turn the crank one turn and the crank gear is at 12 oclock and the cam gear is at 12 oclock you will be on #1 TDC compression stroke.
JIM
Don't worry about valve position at this point. Line up the dots with crank gear at 12 oclock and cam gear at 6 oclock. That will have #6 at TDC compression and #1 with valve open on overlap. When you turn the crank one turn and the crank gear is at 12 oclock and the cam gear is at 12 oclock you will be on #1 TDC compression stroke.
JIM
Instructor
Joined: Sep 2010
Posts: 229
Likes: 1
From: Grants Pass Oregon
I don't understand the question. Your crank and cam gear should have a dot on one side,like the timming chain gears. Gear sets come with " buttons " to set cam advance or retard, shims and a large cam button to keep gear from hitting timming cover. Some gear sets won't work with stock timming covers. Also some require some grinding of the block. Not sure what you mean in second question. At TDC, both intake and exhaust valves will be closed.Good luck.
