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First you need to remove everything off the front of the engine so that the timing chain is showing. You will need a Harmonic balancer puller/installer tool just to remove the timing cover. The Crankshaft gear is a pressed on gear over a woodruff key that need to be pulled off utilizing the same puller of the balancer. The new one can only go on one way. Just line up the key slots and make sure the side with the dimple faces towards you as that is necessary to complete the timing process. If your chain hasn't jumpes timing and the gears haven't been removed. Use a magic marker and draw lines on the crank and the block and same for cam end. You can simpley install the chain right over the crankshaft gear wherever the cam gear lines up with itself. You can check it afterwards for proper alignment following this procedure and eliminating the steps you have already taken. Bring that dimple mark to 12 o'clock position and make sure the no.1 cylinder is at TDC on the compression stroke. The crankshafts turns two revolutions for every cam revolution. Align the cam gear so the dimple points 12 o'clock as well with the chain attatch and hanging. Hook the chain and make sure the gear remains in 12 o'clock position. The cam can be turned to accomodate the gear. Turn the engine over by hand so that the crankshaft turns one full revolution. The dimples should be pointing towards each other. Crank at 12 o'clock and cam at 6 o'clock. Turn the engine over one more revolution to bring the no.1 cylinder to TDC for proper timing.
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Where are the timing marks on an 1986 K-5 Blazer 305 ci?
The timing mark on all 305 to 400 small block Chevrolet engines from 73 to 87 is on the hamonic balancer which is the pulley behind the crankshaft and has no belt grooves...smooth with a split line on it....that line is the timing mark.
How do you replace timing chain on a 305 Chevy?
Just pull the camshaft gear of it should be just 3 bolts
What performance timing gear chain is best for a 305 for low end power?
A timing gear set such as a link, or a true roller ,or just stock ,will not affect your basic performance; A quality timing chain set will just add durability. A basic stock set with a steel gear on top is hard to beat for what you want.
Why doesn't Distributor on a 305 GMC turn?
remove distributor and check the gear on it.if gear is ok then remove front cover and check timing chain or broke camshaft.
Does a 305 Chevy engine from a 1984 trans am have a metal timing chain and gearset?
I believe 88 and earlier 305's have a nylon coated cam gear that is supposed to make them run quieter but are prone to failure, however chain and crank gear are all steel.
Will a ferrari crankshaft fit in a Chevy 305?
no
How do you set timing on a 305 motor?
what are the timing marks on a chev 305 motor for the year 1995.
How much slack on a timing chain 305 Chevy?
About 3 degrees of crankshaft movement, or less than 1/4" if measured on the chain with one side held tight.
What size is a 305 v-8 crankshaft?
It is 3.48 inches, the same as the Chevy 350 crankshaft.
How do you adjust the timing chain on a 1988 kawasaki kz 305?
how to adjust the timing chain on a 1988 kz 305
Where are the timing marks on a Chevy 305?
On the front of the timing chain cover, drivers side towards the top of the harmonic balancer.
What is the timing gear marks on a Chevy 305?
I take it you mean how the timing gear marks line up? The marks are small stamped round indented circles on the outer faces of the gears positioned in line with a gear tooth. If you disassembled the intake and distributor already, you first probably held your finger over number 1 cylinder spark plug hole until it shot out compressed air & the distributor cap rotor was facing number one pick-up, but when you got the timing gear cover off, you saw the mark on the crankshaft gear at the top of the gear as well as on the camshaft gear. That's because on the typical Chevy small block the timing gear marks are lined up right next to each other when number 1 cylinder is at the top of the EXHAUST stroke, not at the top of the compression stroke, as you would think. No big deal. The crankshaft turns twice for every one camshaft rotation. Just roll the motor clockwise either with a remote starter switch, or temporarily place the harmonic balancer back on the crank, & with all the spark plugs out, roll the engine by hand until the timing gear marks come around right next to each other (camshaft gear mark at bottom, crankshaft gear mark at the top). Change your gears & chain, & do all the engine work you need to do. Make the distributor the LAST thing you install. You can roll number one piston to the top of the compression stroke again, then drop the distributor in until it seats on top of the intake with the distributor rotor pointing straight forward for number 1 cylinder. Or, if you haven't disturbed the timing position yet, just point the rotor to number 6 cap pickup position as you drop in the distributor. Hope this helps. Denis
