Nice boat...... but I was hoping for pictures of your engines!

.............




.

.................

You are incorrect!
I am in Pro-Active Damage Preventative mode.

Thread title: Timing early 350/5.7

Post #1: Prestolite electronic ignition

Being conservative, lets say that these are...

I think that you may be confusing displacement with horse power.
"hp" is synonymous with Horse Power. The 327 most likely refers to displacement.

Unless your early SBCs are High Performance...

At the upper left hand corner of the Chris Craft Engine Forum main page, you will see “+ Start New Thread”.
Click on it.
You will be required to give the thread a “title“.
Title it appropriately...

That would be assuming (a dangerous word) that the mechanical advancing mechanism is working perfectly as per the OEM specs.
One rust compromised flyweight return spring (as in weak spring value),...

Thank you, O2!

Jim, O2batsea has found a Crusader Service Manual for you in PDF format.

According to PDF page 63, and if no one has changed pistons in your engine, your engine will be fitted...

Cylinder head combustion volume along with piston dish volume, determines the Static Compression Ratio.

Clarification:
.....Flat Top pistons (minus valve reliefs) do not offer any dish volume. ...

FYI.... you have posted to an old thread from back in September of 2006.
It's always best to start a new fresh thread for your specific topic.

But since we're here...... I agree with Mark.
If...

Mark mentioned mid 60s.
FYI..... if these are mid 60s SBC engines, then they may not have the GM Full Dished pistons in them.


Here is an example ONLY of what you will be looking for.

...

No....... with a gasoline engine, combustion initiates BTDC !

Diesel engines initiate combustion After TDC.



.

Jim, your concerns will be with 3 aspects of ignition advance.

1..... BASE or Initial, of which is the amount of degrees that the cylinders see at/near idle RPM.
We fire up on BASE, and we idle...

In my opinion, using electric heaters for freeze protection will only be as good as are your chances of NOT undergoing a power outage.

As Dieter suggested, drain all seawater (as per your OEM...

With the AQ series (minus the correct reduction), all lower units are interchangeable.
If were to install a Duo Prop lower unit, you will need an AQ series in the 1.95:1.

There will be some very...

dang it's me.... did you read posts 13, 14 and 15?



By the way...... a properly built 5.7L SBC will work best (in this hull) with addition of the 1.95:1 Duo Prop lower gear unit.
The Duo...

Sheesh.... I keep finding more of my images.

Note the orientation of the AFT PDS seal.


https://www.baylinerownersclub.org/filedata/fetch?id=465576&d=1541591543

If you take the transmission completely apart, you may as well lap your sliding sleeve to the gear cups.
Watch for and inventory all shims. They must go back where they were.



...

..............




.

I will post some pictures for you soon.