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First, I really appreciate all the great insight from the forum and community! I have made many posts (and have read many) and have learned a lot from you guys.
So, I am in the final stages of putting on accessories on and about to try and start the old girl up. But I want to know thoughts on when I start it and being prepared (to troubleshoot) because a lot has changed on this engine.
What has changed: Comp 268 Cam Comp push-rods Comp lifters Comp timing gear Headman Headers Offy intake Holley 600cfm 4-barrel Mechanical fuel pump delete
Holley Electric (carb specific) fuel pump
So much has changed with vacuum hoses (I know where the ADD vacuum goes, the break booster and transmission vacuum) where should I plug in the PFC, intake of carb?
Is there any pre-tune I can give the carb?
Set idle on carb first to get it to run smooth at idle?
then Set ignition timing base on vacuum?
then break in cam?
I really don't know the order in which I should do this.
I do know that we are DTC and distributor is set on number spark plug.
Since the engine was running before the cam installation it is ok to turn it over.
The most important thing to do before the 20 min cam break-in period is to get the timing right (10 to 12 degrees BTDC.)
While you are turning it over use a timing light to see where the timing is.
So much has changed with vacuum hoses (I know where the ADD vacuum goes, the break booster and transmission vacuum) where should I plug in the PFC, intake of carb?
I'm guessing you mean the PCV valve? You can either run it to the intake or the carb. Just use an empty port that fits.
Is there any pre-tune I can give the carb?
Set idle on carb first to get it to run smooth at idle?
Not a lot. Be sure it has the original jet size in it (unless you've run the carb before and tuned it) and then turn the idle screws all the way in until they touch and then back them each out 1 1/4. That should get you in the ballpark.
Since you won't be idling it when you break it in, don't worry about getting the idle set until after the cam is broken in. Once it is, adjust the idle screws until you get the highest engine vacuum, and both screws are turned out the same amount.
then Set ignition timing base on vacuum?
then break in cam?
Breaking in the cam should be first thing. You want it to idle for as little as possible. I wouldn't worry about idle settings, or timing until then.
Be sure you have a break in oil, and bring the engine up to 2000 to 2500 RPMs (varying a little bit) for about 20 minutes or so. I'd do an engine oil change afterward, too.
Also, is it safe to bump it over a few times to (no gas hooked to the carb) to get the oil flowing and make sure the pump works?
I prefer to spin the oil pump with a drill bit and an 8mm hex wrench first.
Turn the key on so that the gauges work, and then spin it until you have pressure on the dash gauge.
You'll have to pull the distributor to do so.
If you do bump the starter, I'd pull out the spark plugs so that it spins really easily.
To set the timing, you can bring the #1 cylinder up to TDC. Then, rotate the engine slightly until the timing mark is where you want it at idle (such as 10 to 12°).
Make sure the distributor is pointing at the #1 post.
Then, pull the cap off of the distributor and pull the rotor. Look down inside and make sure that the stator arm is perfectly lined up between the two lines on the magnetic pickup. Adjust it slightly until it is.
Tighten it all back up.
That'll put your timing right where you want it, assuming your harmonic balancer hasn't slipped and the timing mark is correct.
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