Quote: I need to change the timing chain
Why? If the car hasn't run in 15 years, I wouldn't start a restoration by installing a new timing chain. We could use some better background before we give advice.
Quote: if the valve springs are okay
As long as they are not visably broken, they should be O.K. to get the engine running again. Since you've got the rocker shaft off, you can check for free valve movement by tapping on each valve stem with a small hammer. Each valve should open and then snap closed quickly with a 'thunk' noise. If not, ask more questions.
Quote: What do I need to do before I turn the crankshaft?
Make sure there is fresh oil in the motor and install a fresh oil filter. With the valve cover off, you should notice oil at the rockers very quickly or else your oil pump has lost it's prime. I have used a turkey baster to fill the oil pump with fresh oil on engines that haven't run for very long periods. Squirt oil into the holes found when the filter is removed. If there is an oil filter standpipe, remove it, fill the pump with oil and then reinstall the standpipe and filter.
If the car really has been sitting for 15 years, don't try to run off the gas in the tank. The tank will be full of sludge or rust. You'll need to use a gas can. You may also find that the carb is full of dried junk, but worry about that later. Don't make the mistake of trading in the carb for a 'rebuilt' carb. Even if you buy a rebuild, Hold on to the origional carb until you are sure you've got everything running properly.
Quote: I have been told a new camshaft should be installed. True?
I don't understand why. Camshafts last a long time and don't usually need replaced under normal conditions.
Quote: The car last ran on leaded fuel. Should I have the shop prepare it for non-leaded fuel? How?
By 74, the cars were built to run on unleaded. AKA, hardened valve seats from the factory. No special fuel or preparations should apply to most 74 model slant sixes.
|
