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Try a Comp Cams 928, installed @ 1.875"

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I ran those for a while with a .600" flat tappet cam. Fit like a glove

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i ran the isky 8005A with the same set up that you have but with 1.6 indy roller rockers. mopar65

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i ran the isky 8005A with the same set up that you have but with 1.6 indy roller rockers. mopar65

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did u have to cut the seat pockets for the smaller id of the inner spring? or did u just shim for the difference in installed height between the edelbrock and isky recomend, i think the difference is only .010" is that enough to worry about? [/quot

Hi no there is enough room that the springs fit fine and i did not reshim them. i checked a few to compare and thye were so close on mine i did not think it was the worth the trouble to shim the new springs. i used the stock valves but went to a 10 degree reatainer/keeper that set up worked fine for the 3 years i had the car untill i sold it.thanks mopar 65

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i am running the mopar purple shaft .590 312 duration cam. i cannot find any recommendations for this anywhere.

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i am running the mopar purple shaft .590 312 duration cam. i cannot find any recommendations for this anywhere.

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the old mopar book said 140 sit pression,

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I have done several sets of eddys small and big block. What has worked every time on big block is adding a red or blue comp inner spring to the original spring with comp retainer #741-16 steel or 732-16 titanium. This is to get 340-350 at .600 lift and 150-160 seat pressure. The original springs are borderline to stiff for hyd cams and borderline to weak for solid cams. The original springs from edel. will work the way they are if not revving over 6000 rpm. If the edel. springs are new, the blue should work, if the edel. springs have a couple hundred runs on them try the red inner. red part#975-16, blue part#974-16. These are around $30 at summit. Steel retaners and locks will be around $80. tit. retainers will shock you at around $320 with locks.

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I have done several sets of eddys small and big block. What has worked every time on big block is adding a red or blue comp inner spring to the original spring with comp retainer #741-16 steel or 732-16 titanium. This is to get 340-350 at .600 lift and 150-160 seat pressure. The original springs are borderline to stiff for hyd cams and borderline to weak for solid cams. The original springs from edel. will work the way they are if not revving over 6000 rpm. If the edel. springs are new, the blue should work, if the edel. springs have a couple hundred runs on them try the red inner. red part#975-16, blue part#974-16. These are around $30 at summit. Steel retaners and locks will be around $80. tit. retainers will shock you at around $320 with locks.

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I have done several sets of eddys small and big block. What has worked every time on big block is adding a red or blue comp inner spring to the original spring with comp retainer #741-16 steel or 732-16 titanium. This is to get 340-350 at .600 lift and 150-160 seat pressure. The original springs are borderline to stiff for hyd cams and borderline to weak for solid cams. The original springs from edel. will work the way they are if not revving over 6000 rpm. If the edel. springs are new, the blue should work, if the edel. springs have a couple hundred runs on them try the red inner. red part#975-16, blue part#974-16. These are around $30 at summit. Steel retaners and locks will be around $80. tit. retainers will shock you at around $320 with locks.

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Likewise for me, just went through my collection of old springs until I found a set of inners that gave me the right pressure. When I pulled the 312/590 out and went with the 304/640 ultradyne, I upgraded to crower spriings and Titanium retainers.

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Try a Comp Cams 928, installed @ 1.875"

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I ran those for a while with a .600" flat tappet cam. Fit like a glove

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Try a Comp Cams 928, installed @ 1.875"

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I ran those for a while with a .600" flat tappet cam. Fit like a glove

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Same here, Eddie valves, 1.6 rockers with .600" net lift with Comp 928's, stable to 7000+ rpm. Do yourself a favor and have the valve guide clearances checked, mine were tight and I have heard MANY reports of the same.

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