Stock timing is used?

Post by **jeep7081** » May 18th, 2013, 9:23 pm

Stock timing is used when putting a comp cam in "231"?

Thanks

Post by **MoFo** » June 3rd, 2013, 7:22 am

What timing are you asking about, valve timing or ignition timing?

Post by **jeep7081** » June 3rd, 2013, 8:25 am

Ignition

Post by **MoFo** » June 3rd, 2013, 8:34 am

That depends on your engine controls. If you have the 4.0 donor, the computer is in control of ignition timing and you can't change that.

Post by **jeep7081** » June 3rd, 2013, 8:39 am

Just did a cam and performance head swap. Thanks for info.

Post by **FlyinRyan** » June 14th, 2013, 10:19 am

Controlled by the PCM.

Post by **jeep7081** » June 14th, 2013, 10:23 am

dizzy needed to be indexed. Problem solve. She is running.