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#1
06-11-2006, 03:24 AM
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cam selection
Ok guys, I need help picking out a cam and since you've nailed every other question I've ever had, I'll try here first. I basically have an L-88 (not from an L-88) and it is getting a freshen up of rings, bearings, gaskets, etc. and want to upgrade the cam. I would like to get to some type of hydraulic cam for maintainence reasons, but I've lived with solids this long and can continue if necessary. I have a stock bore 427, 4 bolt mains, 7/16 dimples, 12.5:1, 840 heads (ported-gasket matched with polished bowls and intake runners), 163 intake, and a holley 750.
Now I don't know much about cams, but I was told it would be a good idea to get something with more duration to lessen the squeeze of the 12.5:1. What I'd like 1 - it has to idle (a good lope is fine, but I don't want to have to keep it at 1700 rpms for an idle) 2 - enough vacuum to use the disk brakes 3 - Smooth power curve. In general I want it streetable, but this is a weekend toy only, so it's a relative statement. Thanks!
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Camaros 69 SS L78, 69 327, 2000 Z28 Vert, 
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#3
06-12-2006, 03:54 AM
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Re: cam selection
[ QUOTE ]
Ok guys, I need help picking out a cam and since you've nailed every other question I've ever had, I'll try here first. I basically have an L-88 (not from an L-88) and it is getting a freshen up of rings, bearings, gaskets, etc. and want to upgrade the cam. I would like to get to some type of hydraulic cam for maintainence reasons, but I've lived with solids this long and can continue if necessary. I have a stock bore 427, 4 bolt mains, 7/16 dimples, 12.5:1, 840 heads (ported-gasket matched with polished bowls and intake runners), 163 intake, and a holley 750. Now I don't know much about cams, but I was told it would be a good idea to get something with more duration to lessen the squeeze of the 12.5:1. What I'd like 1 - it has to idle (a good lope is fine, but I don't want to have to keep it at 1700 rpms for an idle) 2 - enough vacuum to use the disk brakes 3 - Smooth power curve. In general I want it streetable, but this is a weekend toy only, so it's a relative statement. Thanks! [/ QUOTE ] What do you think everybody here is waiting for your questions ? You should call a cam maker. They are best suited to intelligently guide you to an exact grind. If you do not know any cam grinders start with calling Comp.
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#4
06-12-2006, 05:10 PM
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Re: cam selection
Too much. Now I am reminded why I hadn't posted here for a long while. Yep, already got the recommendation from comp cams. For some reason, I thought that since this was a site dedicated to yenko's and has a bunch of other 427 cars around, it would have been a good place to get some advice from people who had real world experience, but I guess not. I don't know what I was smoking.
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Camaros 69 SS L78, 69 327, 2000 Z28 Vert,
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#5
06-12-2006, 06:54 PM
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Re: cam selection
Can't help you on a hydraulic, but the Chevy454 recommendation on the stock GM L72 is a great idea. I've talked around a dozen guys into this cam, and they are always pleased! Always have picked up over any Comp Cam that is "close"! However..... if you compression is a true 12.5:1 (did you cc the heads and deck the block etc.) the L88 solid might be you cam. It will lessen the squeeze as you stated, and it will idle @ 900 rpm, although a little rough. That cam from 400- rpm on is outstanding. Both cams are great.
Peter
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Pete Simpson 1962-2013 RIP Owen Simpson Eric Simpson
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