318 LA rebuild after losing a valve seat

I see you are Dot to Dot on your timing gear line up at 6:00 o'clock on the cam gear and 12:00 o" clock on the crank gear.

You are going to want to roll it over until your cam gear is at 12:00 o'clock and your crank gear is at 12:00 o'clock so when you drop in your distributor it will fire at top dead center on compression stroke on #1. You line up the 2 dots with a 12" ruler straight edge.

Right now at dot to dot, 6 cam to 12 crank . . You are 180° off for dropping in the distributor, it will be firing TDC on cylinder #6.

That is just the way it works on the mopar small blocks.


Thanks for catching that! Maybe dot to dot is a chevy thing?

And touching back on the springs, I'm concerned that stock springs would bind. The cam I have has .454/.475 lift, and when I tried the Comp 901 springs, they were binding at the machine shop when he was checking for installed height. I had to go with taller springs.


No, 6 and 12 dot to dot is the easiest way to set the cam and gears with the chain...


Just keep building and when it comes time to put the distributor in, take out #1 spark plug and put your finger over the spark plug hole, then rotate the engine until you feel pressure - that will be the compression stroke where you set the distributor to TDC and the distributor to the #1 cylinder when installed...