stanglx2002

Im going to build my engine this weekend. Im going to pick up my heads from the shop today. I have never replaced a cam before so I need some tips on how to change the cam and install the timing chain 4* advanced. i have an adjustable timing chain so I can advance the cam. My question is how just line up the cam sprocket to the key on the crank sprocket that says 4+

Engine details
302 Explorer engine
GT40P heads
Upgraded springs
3 angle valve job
Explorer intake
70mm TB
76mm MAF
LT headers

r.barn

Not that simple.

You need a "cam degreeing kit" with cam degree wheel to make sure it's in according
to cam card specs.

stanglx2002

if you set the timing chain dot to dot couldnt you just set it to 4+ instead of 0??

r.barn

Here ya go

http://cranecams.com/pdf/803.pdf

my77stang

i've never degreed a cam in my life, and they still haul *** (im not saying degreeing is a bad thing, by no means..... just 97.635% of the people here would never know the difference)

Joel5.0

Would it really be 4° advanced?....... FYI the last OTS cams I've installed were advanced 2° and 4° advanced using the 0 (TDC) position, the last one I did, I wanted it to be 4° advanced, and used the 0° position.......if I wouldn't have degreed the cam, it would have been installed 8° advanced using the +4° position by mistake.... just a thought.

95stang50

and when your installing the cam be careful to not knock out a cam bearing and be sure to use alot of assembly lube on your cam and lifters

stanglx2002

Well I installed the cam, timing chain, heads, lifters, pushrods, 1.7 cobra roller rockers.

What I did was turn the crank sprocket to A4 and didnt turn the cam sproket at all and put it in on the crank and cam. I didnt advance the cam now did I??? Because I put the crank sprocket in the keyway at 0 so it didnt turn the cam at all to advance or retard the cam. Did I do this right or wrong

Joel5.0

If you used the 4A keyway, you used the advanced 4 degrees. The following pic will show you the position of the crankshaft in the different advance positions and 0, the one used for the install is the 4A......(you actually retard the crankshaft to advance the cam)