0.070 thous is good i use to have 0.065 on my 11.4/1 motor and shifted it at 6500rpms , just make sure your valve spring are good( spring pressure),
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| Factory Specs? https://slantsix.org/forum/viewtopic.php?t=26824 |
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| Author: | Bren67Cuda904 [ Wed Feb 06, 2008 6:58 pm ] |
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Howard Cams, yes custom. |
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| Author: | 1969ronnie [ Thu Feb 07, 2008 6:38 am ] |
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hi, i will call tom at erson today and give him all my specs. might have to grind something custom if the 270 won't work for me. i see you used a erson 270 in guzzi. is the 270 considered a high performance torque cam? ron |
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| Author: | Doc [ Thu Feb 07, 2008 9:59 am ] |
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We used the 270 Erson because it was the bigger of the 2 cams we had on hand. This cam is a little mild for the 11 to 1 C/R built into this engine but as long as good fuel is used (race gas) it should work OK. DD |
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| Author: | 1969ronnie [ Sun Feb 10, 2008 2:47 pm ] |
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hi,i have another head that is 52cc. the compression calculator shows that i need to take off .040 or .050 on deck. the machine shop is slow this week and can cut block for peanuts.<slow time of the year for them> the 40cc head will give my other slant a needed compression boost. before i start assembling this block in 2 weeks ,should i cut the deck a little more and use the 52cc head? missed tom at erson friday. will try again tomm. ron |
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| Author: | 1969ronnie [ Wed Feb 13, 2008 7:08 pm ] |
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tom recommended the e470621 for me, but wants to grind it on a 106 lobe sep vs the stock 111. he doesn't keep our names, but has sold some cams with that setup to the group. if anyone has that grind can you post your results. thanks, ron |
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| Author: | 1969ronnie [ Tue Feb 26, 2008 2:21 pm ] |
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hi, i have the new cam installed with a jp/cox brothers timing set 2 degees advanced and with no head gasket i have .050 valve to piston clearance on my intakes 5 degrees after top dead center. exhaust has plenty of clearance. 4 degees advance drops me to .045. straight up gets me .065. with the .020 head gasket(which i want to use) is .070 enough valve to piston clearance? should i use a .040 felpro for more clearance? ron |
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| Author: | terrylittlejohn [ Wed Feb 27, 2008 3:21 pm ] |
| Post subject: | vavle clearence |
0.070 thous is good i use to have 0.065 on my 11.4/1 motor and shifted it at 6500rpms , just make sure your valve spring are good( spring pressure),
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| Author: | 1969ronnie [ Sat Mar 01, 2008 10:53 am ] |
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hi, the factory length pushrod spec looks to be 9.830. mine all measured between 9.827 to 9.825 effective length. my adjustable pushrod shows i need 9.750 effective length pushrods to have 0-1 thread below rocker. who are we using for custom pushrods? ron |
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| Author: | Joshie225 [ Sat Mar 01, 2008 5:02 pm ] |
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Smith Bros Pushrods! www.pushrods.net/ |
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