Originally Posted by blue thunder

You need to run less total timing so look for a tbolt v-6 module with only 14* total advance. You stock v-8 module will probably have 24* which puts your idle timing to low. Set the total at 30* and you will be close to good.

When I did my upgrades one problem I missed was the pulley ratios. I needed to change the water pump pulley to a different size to match the new v-groove/rib combo blower pulley. I kept thowing belts and replaced everything on the front of the engine before it dawned on me the problem.