Yoeasy69's 383 Build

[bigjon88]

man looks good!!!!

[meissen]

That's awesome, Josh! I'm so happy for you - can't wait to see her ripping up and down Woodward some day!

[Darren]

looking great! I love that green on the engine it really pops!

[Phantom409]

Looking really good Josh!

Can't wait till you can get it on the road

[Yoeasy69]

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[Phantom409]

Call me tomorrow.

Sorry I missed your call

[meissen]

Sounds to me like the optispark is indexed wrong.

[Phantom409]

I talked to Josh this morning and we talked about what his problem might be.

Plug wires crossed
Opti on wrong
To much timing in tune

He is going to go over things this afternoon and go from there.

[my95z28]

Did I miss where he posted what his issues were?

[Phantom409]

No, he called me

His problem is a severe back fire when he try's to start it.

It could be one or more of the things I posted.

[meissen]

Yeah, I only knew cause we were talking about it in the shoutbox last night. Severe backfire sounds exactly like what was going on with mine when I had the optispark indexed wrong. But he also mentioned the timing thing too.

Speaking of which, Kyle - when you degreed his cam, what exactly do you do? Do you just make sure it's right and then put it to #6 tdc location or do you spin the gear so it's not dot to dot or do you drill out the hole and put an adjustment plug in there? I'm just curious because he mentioned it and I remembered you mentioned it on my setup before but on Cz28 all I've ever read is that it's not necessary on the lt1s.

[Phantom409]

Yeah, I only knew cause we were talking about it in the shoutbox last night. Severe backfire sounds exactly like what was going on with mine when I had the optispark indexed wrong. But he also mentioned the timing thing too.

Speaking of which, Kyle - when you degreed his cam, what exactly do you do? Do you just make sure it's right and then put it to #6 tdc location or do you spin the gear so it's not dot to dot or do you drill out the hole and put an adjustment plug in there? I'm just curious because he mentioned it and I remembered you mentioned it on my setup before but on Cz28 all I've ever read is that it's not necessary on the lt1s.

Well 1st off I don't know where you got piston #6 for timing but that's incorrect even if it did work.
Piston #1 is what's used.

2nd, Comp and many other sites may say it's not necessary to degree your cam but they do suggest it and all instruction from them and anyone else use piston #1 that I have found.

The instructions I use to do all my cams are from Comp using the TDC method.

B, the reason for doing a cam is to make sure that all the pieces are working in the right order.
It also insures that the cam is ground right and a mistake wasn't made when the cam was ground.
The chance of that is slim but human error does happen.

I will degree every cam I put in weather someone says I have to or not.
It's my piece of mind that everything I did is right.
You can believe what ever you want but in my world it get's done every time no matter what.
And it don't hurt a darn thing to do it, the computer don't know jack about what's been done when it comes down to it.
The only thing that matters is that the timing is right when the car starts and you don't smash a valve.
If Josh's timing was wrong there would be one huge messed up valve train waiting for me to fix on my dollar.

Don't take what I'm saying the wrong way please.
I have talked to Josh and it's not imposable that PCM4Less messed up the timing in the tune.
MadZ28 screw me up big time when I put my 3rd cam in with the wrong timing and I broke 4 starters before I figured it out (Thanks Auto Zone)

[meissen]

Understandable on doing it for assurance - I guess my real question is have you ever had to adjust the degree of the cam? And if you did, how have you done it? Drill a hole in the timing cover and then use an adjustment plug? Just trying to understand what it is ya do.

And what I said about the #6 thing was right - When the crank dot is at 12 o'clock, #6 and #1 are both at TDC. When you put the cam's dowel pin at 3 o'clock (which makes the cam gear at 6 o'clock), you're on #6 firing when the optispark is placed onto the camshaft dowel.

[DETROITMUSCLE]

a double roller setup is what you need on LSx cars to degree a cam is it the same for LTx?

[meissen]

With the LT1s, I believe you have to drill a hole through the timing gear that the cam's dowel pin goes through and then you use a plug to advance or retard where the dowel fits in the gear. Atleast that is how I've understood it from CamaroZ28.com's LT1 section.

And that's why I'm asking Kyle more about it - I only understand it a little bit, but if I were buying a cam I would be buying it with the understanding that it will be degreed correctly when I put the cam gear and the crank gear dot to dot like it's supposed to be. Unless I am purposefully advancing or retarding the cam, I would return the cam to the manufacturer before I would drill a hole in my cam gear and use a plug to adjust for an error from the manufacturer.