Meissen's LT1 Build-up Thread

[meissen]

Btw - got the white spring today. I had Angie order it through Merollis. Where and how does this spring go? Is there a writeup somewhere on how to change it?

[MiDi_2001]

Degreeing the Camshaft

Here's a link at Crane Cams that expains why a cam should be degreed and the degreeing process:

http://cranecams.com/?show=article&id=3

And one from Comp Cams:

http://www.compcams.com/Technical/Instructions/Files/145.pdf

[DETROITMUSCLE]

Your gonna have to removing the timing cover again Brain and drop the pan to install that spring I'm pretty sure it goes in the oil pump itself. Is this correct?

[meissen]

We haven't installed the pan yet so it's all good. I believe its in the oil pump - sounds like I gotta take it apart.

[DETROITMUSCLE]

We haven't installed the pan yet so it's all good. I believe its in the oil pump - sounds like I gotta take it apart.

I hope you can disassemble the pump with the balancer and front cover ect. on otherwise you'll have to remove it all again to get the pump off the crank snout.

[meissen]

Oh really? Hmm I better do some searching. I figured it was just something in the back oil pickup and had nothing to do with the crank or stuff on the front.

[92conv]

Here's a link at Crane Cams that expains why a cam should be degreed and the degreeing process:

http://cranecams.com/?show=article&id=3

And one from Comp Cams:

http://www.compcams.com/Technical/In.../Files/145.pdf

Looks like some good info in those links, Thanks for sharing!!!

[meissen]

I swear from now on anytime I need to search for something on CamaroZ28 I'm going to find Joel's user profile and click "Show all Threads by User"

Thanks indirectly Joel!
http://www.camaroz28.com/forums/show...ng+in+oil+pump

PS - that's like the 2nd or 3rd time I went to CamaroZ28 to search for something and found the answer in a thread that Joel posted asking the same question.

[98blackbeauty]

The cam has nothing to hold it in place till the timing chain is on.
It's posible and I have done it my self.

It all has to do with TDC and the relationship to the cam.
Dot 2 Dot is for reference only, it's not perfect and yes it will get you close but that is it.


If I hadn't check my last cam and just did what you guys did I would have been off 6* and that's a lot.
You want timing issues that will do it!

All I'm saying is that you have a lot of money in this and I would think that you would want it right.
Not trying to be cocky here but I have done my fare share of motors and if I was you I would want peace of mind.
Buy hey, what do I know???

I copied this from the Comp Cams proceedure. Should help everyone to understand.

Should you degree your new cam?

It isn’t absolutely necessary to degree the cam for the engine to run efficiently. COMP Cams

® grinds most

of its High Energy, Magnum, and Xtreme Energy™ cams four degrees advanced. This positions the

camshaft for the best street performance. However, to assure maximum performance it is recommended to
degree the cam. The purpose of degreeing a camshaft is to correct the errors and tolerances in the machining
processes of the engine that can affect camshaft timing. COMP Cams

® suggests the intake centerline

method as the most simple, quick, and efficient way to degree a new camshaft. Instructions for degreeing

can be found later in this booklet.

So everyone is right in what they are saying.

[DETROITMUSCLE]

Thank god Brian, I was thinking if its anything like an LS car the oil pump doesn't come apart from the bottom you'd have to go back and actually remove it completly to do it, glad to hear you can get it done quickly.

[Kwazrollinz28]

We haven't installed the pan yet so it's all good. I believe its in the oil pump - sounds like I gotta take it apart.

I hope you don't plan on using the Oil pump that came with the motor like i did, LT1's have shitty oil pumps and especially when you buy the motor used.

I should have atleast did the Spring method. now i get 10psi at idle and 40 at wot.

Keep in mind i idle at 650 now at 1000 i get 20 or so PSI

[meissen]

It's my understanding that the white spring is what fixes the pressure issues that you're describing, Steve. From what I understand the white spring allows the pump to work better.

[BP_Z28]

I swear from now on anytime I need to search for something on CamaroZ28 I'm going to find Joel's user profile and click "Show all Threads by User"

Thanks indirectly Joel!
http://www.camaroz28.com/forums/show...ng+in+oil+pump

PS - that's like the 2nd or 3rd time I went to CamaroZ28 to search for something and found the answer in a thread that Joel posted asking the same question.

Im telling you that Batman LT1 PS I did needs to be recognized nationwide!

[Boost Addict]

Nothing has to come off of the front of the motor to install the spring.

[JoeliusZ28]

Thank god Brian, I was thinking if its anything like an LS car the oil pump doesn't come apart from the bottom you'd have to go back and actually remove it completly to do it, glad to hear you can get it done quickly.

LT1 and SBC oil pumps are COMPLETELY different from LS1s... they are nowhere near the front cover.

It's my understanding that the white spring is what fixes the pressure issues that you're describing, Steve. From what I understand the white spring allows the pump to work better.

Yes it does, the spring controls the pumps pressure bleedoff. So the stock spring will peak at 40psi even though the pump is generating more. With my white spring, i have SUBSTANTIALLY better oil pressure. While cruising i have around 60 PSI now, whereas it barely exceeded 40 even at WOT with the stock spring. Cold itll even hit 70. I did however delete my oil cooler at the same time which can be worth a couple PSI.


You shouldnt have any problem figuring out where the spring goes once you remove the bump brian. BE SURE TO TACK WELD THE PUMP BACK IN PLACE so you dont have it falling off on you like happens randomly to many people. Unfortunately for me, i didnt know about that when i did mine.