227/233 .560/.569 109+1
02-03-2007, 10:57 PM
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227/233 .560/.569 109+1 I saw this cam on NRP's site. It's for a 95 TA. It gives me 12* overlap, mostly centered about TDC (a little intake bias) which should build power past peak torque. I'm looking for a cam to run to about 6500 rpm. More interested in power under the curve than peak power. Not for a dd. Will see the track once or twice/year. Gives me about 10.2 SCR, 8.5 DCR. I realize I will sacrifice driveability, but once again, its not a dd. It'll probably be a pretty choppy idle. Thoughts? Any compromises or suggestions? Should I go for more lift? I could put it on a 1101+2 and get less lope.
Also, I got 280/285 @ .006. This gives me slightly less than XER lobes.(.006-.050=50) I was hoping for more aggressive ramp rate on closing than opening to push overlap even more towards intake. Using 66* overlap I came to 280* duration per David Vizard's formula. I then added to that to get 285* for exhaust. (Added only 5* instead of 6* split @ .050 to get a less aggressive opening ramp, again to help push overlap towards and a little past TDC.) The closing ramp and other finer details I would leave up to Futral, who will be doing the install and dyno tune. Again, thoughts and suggestions please.
Also, I got 280/285 @ .006. This gives me slightly less than XER lobes.(.006-.050=50) I was hoping for more aggressive ramp rate on closing than opening to push overlap even more towards intake. Using 66* overlap I came to 280* duration per David Vizard's formula. I then added to that to get 285* for exhaust. (Added only 5* instead of 6* split @ .050 to get a less aggressive opening ramp, again to help push overlap towards and a little past TDC.) The closing ramp and other finer details I would leave up to Futral, who will be doing the install and dyno tune. Again, thoughts and suggestions please.
Last edited by eLTwerker; 02-03-2007 at 11:05 PM.
