Where could one find the correct camshaft since Federal Mogul stopped making the CS 113R. Must sound correct for judgeing. Thanks in advance.
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Re: C-1 097 camshaft
There have been sporatic reports that the CS113R is no longer available, but some diligent search might yield one. TDB member Tim Schuetz is a NAPA jobber in Wisconsin. Suggest you contact him, maybe he can help.
If you can't find one through NAPA, check Crane and Elgin. I don't think Crane lists it in their standard catalog, but I know they have the lobe masters.
The specs are - .050" lifter rise duration 228/231; POMLs 108.5/112.5; gross lobe lift .2625/.2665" or times 1.5 - .3937/.3997".
The effective .050" lifter rise duration net of the clearance ramps is about 220/220, and the LSA is 110.5. Some specs may truncate the decimal.
Duke -
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Re: C-1 097 camshaft
Jerry, Like Duke said try Elgin. Here is the info. Elgin Pro Stock part
# E900P. Dead nuts. Elgin Industries reportedly makes the blanks for various cam companies. Numerous customers of mine have been using this cam the last 5 years or so and are pleased.
Don't tell me the FM CS113R cam is scarce or discontinued. That's sad. Hope it is not true. JDComment
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Re: C-1 097 camshaft
CS113R is still listed at www.napaonline.com
How long it continues to be manufactured and stocked is probably an issue of demand. At some point demand may decline to the point where it's discontinuded.
DukeLast edited by Duke W.; March 5, 2011, 01:33 PM.Comment
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Re: C-1 097 camshaft
CRANE CAMS, under solid lifter small block Chevrolet.
Replacement for factory 340 HP 327 cu.in.
3736097
Duntov camshaft.
BluePrinted
2000-5600
Or if your looking for that cross over camshaft between LT1 & 097
CRANE CAM
F-228/3067-2-10
2600-6200 RPM Range
110931
* 99250-16
Int lift- .460
Exh lift-.480
Int duration at 0.50: 228/Adv 290
Exh duration at .050: 238/Adv 300
lash .022
LSA 110
Bill
1961 Black/Silver/Red Int. 283/315 FI
power windows. Frame off 65% completed.
1989 White/hard top/Grey Int. daily driver 167,000 miles
"The problem with Liberalism is that eventually you run out of other people's money" - Margaret ThatcherLast edited by Bill B.; March 5, 2011, 02:59 PM.Comment
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Re: C-1 097 camshaft
That looks like one of those "improved" Duntov cams that the aftermarket offers - not the real thing. It has more lift (good), but more overlap (bad).
The increased exhaust duration is good for unmodified big port heads, but the small port heads used on most 283s are okay for equal duration.
For those that want to use the Duntov on 283s, my recommendation is to have Crane grind a custom using the Duntov lobe masters with POMLs of 110/118, which yields a LSA of 114.
This will tame the idle somewhat without giving it away. It's essentially a mechanical lifter version of the L-79 cam (albeit with somewhat less lift) that some 283 owners have used to replace the Duntov with good effect.
DukeComment
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Re: C-1 097 camshaft
I agree Duke, the cam you suggested is much tamer and produces much more low end torque.
Back to what I called the LT1/097 cam, yes the down side is the huge 75 degrees of overlap making the idle a little lumpy, but it can be tamed a little by advancing the cam a few degrees. But if it had 55 to 60 degrees overlap would make it perfect for hp street use. I believe the 097 overlap is somewhere around 66, correct me if I’m wrong. Would like to hear any comments of anyone running either camshaft.
Bill
Last edited by Bill B.; March 5, 2011, 07:54 PM.Comment
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Re: C-1 097 camshaft
Advancing the cam, which alters overlap phasing doesn't have any significant effect on idle behavior. See the Fall 2009 Corvette Restorer for more discussion and examples.
As per that article, the primary valve timing event that affects the position of the of the torque curve on the rev scale is the point the inlet valve closes, and advancing the cam shifts the torque curve down the rev scale due to the earlier closing inlet valve, but, as I've said before, if you have to advance a cam from the design indexing to get acceptable low end torque, you have too much duration and/or overlap.
DukeComment
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Re: C-1 097 camshaft
northernautoparts.com has the CS113R cam for $74.95Comment
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