Thread: 454 stumble

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yes i would start there i would say 12 on the crank and every thing in the dist the ligth springs will help just start out with them springs i told you to use .to get the curve in faster .i would say if you look at your chart with the stock spring you still not curved all the way till past 3500 .i do not have the chart here its at the shop . but i have set up many msd s. i used the springs blue and ligth sliver and the red bushing that works for me run it till 2500 should be all in. pull out or add timing on the crank to get it were you want it from there.i would start at 34 to 36. you could try 32 but my flat top blower engine likes more timming till boost then i pull timming out. the only way your going to know is to try it .IN SHORT GET THEM STOCK SPRINGS OUT