Looking at different cams for DART 205s
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Looking at different cams for DART 205s Hey guys,
As an experiment I've been crunching some numbers and looking at different cams for out of the box Dart 205 heads.
Combo:
Full weight street car
3.42 gears
LS7 clutch/LS2flywheel
looking to peak at ~5900-6000rpm
Looking for the most area under the curve
Ls6 intake, ported stock T-body
BONE STOCK 02 exhaust with CME
Stock thermostat with slightly lower fan setting
91 Octane
850rpm idle (smooth)
Here is what I am looking at so far. Thoughts appreciated. (XE-R lobes)
218/224 114LSA 110ICL
IVC 39
EVO 50
Static comp 10.97
Dynamic comp 8.81
Overlap -7
Do you think the dynamic comp is too high for 91 octane with good tuning? What would you expect the combo to make through stock manifolds?
As an experiment I've been crunching some numbers and looking at different cams for out of the box Dart 205 heads.
Combo:
Full weight street car
3.42 gears
LS7 clutch/LS2flywheel
looking to peak at ~5900-6000rpm
Looking for the most area under the curve
Ls6 intake, ported stock T-body
BONE STOCK 02 exhaust with CME
Stock thermostat with slightly lower fan setting
91 Octane
850rpm idle (smooth)
Here is what I am looking at so far. Thoughts appreciated. (XE-R lobes)
218/224 114LSA 110ICL
IVC 39
EVO 50
Static comp 10.97
Dynamic comp 8.81
Overlap -7
Do you think the dynamic comp is too high for 91 octane with good tuning? What would you expect the combo to make through stock manifolds?
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From: Sunny London, UK
Im running the dart 205's with 220/224 cam 114-110icl
ivc 41 I think I worked dynamic to 8.6:1 overlap is -6
Im running European 95RON which is I think similar to 91MON. Plenty of power. But Im chasing the last of some KR out.
WOT is only 17 deg ! So I think higher octane may be required. Though the heads are supposed to require less timing anyway.
Im a little way off as Ive only had it together for a few days. Ill let you know how 98RON goes with it.
ivc 41 I think I worked dynamic to 8.6:1 overlap is -6
Im running European 95RON which is I think similar to 91MON. Plenty of power. But Im chasing the last of some KR out.
WOT is only 17 deg ! So I think higher octane may be required. Though the heads are supposed to require less timing anyway.
Im a little way off as Ive only had it together for a few days. Ill let you know how 98RON goes with it.
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I will always advocate or suggest the G5 series X2 for more manners,
X3 pretty mean, and X4 is just nasty. A good tune will help these
cams be everything they can be and still very drivable. If you go
with the X3 or X4 cams I would suggest the 921's or the Patriot
Dual gold springs. Its your choice .
X3 pretty mean, and X4 is just nasty. A good tune will help these
cams be everything they can be and still very drivable. If you go
with the X3 or X4 cams I would suggest the 921's or the Patriot
Dual gold springs. Its your choice .
Thread Starter
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Posts: 10,341
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Originally Posted by allngn_c5
I will always advocate or suggest the G5 series X2 for more manners,
X3 pretty mean, and X4 is just nasty. A good tune will help these
cams be everything they can be and still very drivable. If you go
with the X3 or X4 cams I would suggest the 921's or the Patriot
Dual gold springs. Its your choice .
X3 pretty mean, and X4 is just nasty. A good tune will help these
cams be everything they can be and still very drivable. If you go
with the X3 or X4 cams I would suggest the 921's or the Patriot
Dual gold springs. Its your choice .
Thanks,
Chris
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Originally Posted by jlashley2001ss
why not try a 224/228 110+2 cam?
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Originally Posted by PREDATOR-Z
Yeah anything above 8.5 DCR will be detrimental since you'll end up reducing timing.
You think 8.5 is good and safe for DCR on 91?
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From: BFE
Originally Posted by CHRISPY
Does that apply specifically to 91 octane or would 8.8 be doable safely on 94?
You think 8.5 is good and safe for DCR on 91?
You think 8.5 is good and safe for DCR on 91?
What are you looking to do exactly, perhaps I could help.
I run a cam on my vette with XE lobes that peak at 5900 and is stock manifold friendly.
210/224, .555/.567 115+1 LSA
With Dart 205 it will be more like 10.9 SCR and 8.6 DCR
39 IVC, 48 EVO (good trq) and exhaust biased for manifolds
On my Vette still no heads it made close to 320 trq by 2500
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Originally Posted by PREDATOR-Z
With proper tune and quench yeah 8.5 is OK with 91.
What are you looking to do exactly, perhaps I could help.
I run a cam on my vette with XE lobes that peak at 5900 and is stock manifold friendly.
210/224, .555/.567 115+1 LSA
With Dart 205 it will be more like 10.9 SCR and 8.6 DCR
39 IVC, 48 EVO (good trq) and exhaust biased for manifolds
On my Vette still no heads it made close to 320 trq by 2500
What are you looking to do exactly, perhaps I could help.
I run a cam on my vette with XE lobes that peak at 5900 and is stock manifold friendly.
210/224, .555/.567 115+1 LSA
With Dart 205 it will be more like 10.9 SCR and 8.6 DCR
39 IVC, 48 EVO (good trq) and exhaust biased for manifolds
On my Vette still no heads it made close to 320 trq by 2500
I was trying to keep evo around 50 with the stock manifolds and IVC 39-40.
Chris
ps- What were your peak and average RWHP/RWTQ numbers with that cam?
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From: BFE
Originally Posted by CHRISPY
I am looking for something similar. Great average hp and torque with a peak of 5900-6000rpm. Smooth stealthy idle and emissions friendly. Stock manifolds and full stock exhaust.
I was trying to keep evo around 50 with the stock manifolds and IVC 39-40.
Chris
ps- What were your peak and average RWHP/RWTQ numbers with that cam?
I was trying to keep evo around 50 with the stock manifolds and IVC 39-40.
Chris
ps- What were your peak and average RWHP/RWTQ numbers with that cam?
So far with Halltech filter, ported TB, Pulley, tuning with Vinci handheld (wideband O2 sensor/guage) I'm seing 364 rwhp and 372 rwtrq
I plan to add a Magnaflow cat/X pipe and a set of AFR 205's to reach close or at 400rwhp and 400+ rwtrq (all of this while keeping the Vette as civilised as stock, untill you floor it)
