Cam 180 out?

[mp71conv]

I Have a 71 350 that I am rebuilding.
I have a lunati voodoo cam
lunati timing chain set

I lined the marks up like normal instal of the timing chain.
After checking the no1 .pusrod sizes. I relized the it was on the exhaust stoke.

When the cam is at zero lift on the no1 cyl the dot on the gear
is at 12 oclock.

I am lost.
I looked at the old cam and gear and they are 180 different.

Has anyone installed their cams or has anyone seen this.

[mp71conv]

Ok I just checked it again and with the marks lined up.
It is at TDC on the comp stoke at cyl no 6.

[dan2286]

Recently someone mentioned that a lot of people get confused when they are lining up the dots on an Olds engine.

I guess Olds is set up to have the dots lined up on the exhaust stroke on the #1 cyl.

[joe_padavano]

Originally Posted by dan2286

Recently someone mentioned that a lot of people get confused when they are lining up the dots on an Olds engine.

I guess Olds is set up to have the dots lined up on the exhaust stroke on the #1 cyl.

Since the cam turns at half the crank speed, it will be properly aligned twice - once when the dots on the two gears are facing each other (crank at 12:00 and cam at 6:00) and again when both dots are at 12:00. You just need to install the distributor so that the No. 1 plug fires when that cylinder is on compression.