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-   -   dot-to-dot, cam/crank relationship (https://www.performancetrucks.net/forums/gm-engine-exhaust-performance-21/dot-dot-cam-crank-relationship-548201/)

SunBUm 03-07-2017 08:56 PM

dot-to-dot, cam/crank relationship
 
I'm about ready to pull the cam but can't determine the dot-to-dot relationship of the cam and crank. If the picture shows up, you can see the dimple in the cam gear (don't know if that's the one I'm looking for) and there's a dot on the end of the crank, but they don't line up.

What gives?

https://cimg7.ibsrv.net/gimg/www.per...49b14b7f7d.jpg

03sierraslt 03-07-2017 09:04 PM

Line up the dot on the cam gear with the dot on the crank gear behind the oil pump.

BigBamaBoy65 03-07-2017 09:05 PM

Take the pump off. Dot is on the crank gear
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SunBUm 03-07-2017 09:19 PM

OK, thanks guys. I'm in the process of getting the pump off (you can see I've taken it apart) but am having a heckuva time getting the oil pan dropped. Thanks for the answers!

TXsilverado 03-07-2017 11:35 PM

The pump does not need to be pulled tilo see the dot.

TXsilverado 03-07-2017 11:36 PM

Run a degree wheel too. I had a cam ground incorrectly that would have cost an engine if i didnt take 30 min to check.

03sierraslt 03-08-2017 05:46 AM

The stock timing sets on these motors are so loose it's pitiful. I will never swap a cam and put a stock timing set back on. A lot of people do though. To each their own.

03sierraslt 03-08-2017 05:47 AM


Originally Posted by TXsilverado (Post 5401475)
Run a degree wheel too. I had a cam ground incorrectly that would have cost an engine if i didnt take 30 min to check.

I agree, although if it was that close it was a big cam. A degree wheel is the way to go although with a non adjustable timing set you aren't accomplishing much other then finding out it's not right.

Atomic 03-08-2017 07:07 AM

Dont pull the pump off, not worth fighting with that oring on the tube. You can see the crank dot behind it. If its way off you can move it a whole chain link but obviously a adjustable timing set gives you finer adjustments.

wretched73 03-08-2017 07:28 AM


Originally Posted by 03sierraslt (Post 5401480)
The stock timing sets on these motors are so loose it's pitiful. I will never swap a cam and put a stock timing set back on. A lot of people do though. To each their own.

Not to hijack, but what timing set would you recommend? Would probably help OP and myself


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