Lunati 224 vs Thunders 224
04-13-2006, 05:49 PM
#15
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I don't have any info on the Lunati lobes.
I probably wouldn't even mess around with the TR224 when you can order directly thru Comp, their XE-R 224 lobe which is a bit more aggressive. It has 3* less duration @ the opening of the valve (.006'') and 2* more @ .200''. So, for a given LSA you will have a better idle quality with this lobe because .006'' overlap will be less. .050'' will be the same because its a comparison between a 224 and 224 lobe if that makes sense.
Here is an actual comparison.
TR 224 lobe
276 duration @ .006''
224 @ .050''
144 @ .200''
563'' Lift
Comp XE-R 224 lobe
273 duration @ .006''
224 @ .050''
146 @ .200''
581'' Lift
You can order profiles directly thru Comp or place an order at TR or TSP... Any of those shops that stock Comp lobes can do it also.
Call up and say, I want:
#3722 (224* @ .050'') XE-R as the intake lobe.
#3722 (224* @ .050'') XE-R as the exhaust lobe.
Set at a 112* lobe seperation
With 4* of advance for a 108* intake centerline, and a 116* exhaust centerline.
It's that simple.
There is no reason to stick to these 3 or 4 off the shelf profiles that everyone is using. Go and order your own custom cam.
Here are some of the XE-R profiles that are available incase some of you want to do this.
Lobe # - .050'' duration - Lift
3720----220*-----------.581''
3722----222*-----------.581''
3722----224*-----------.581''
3723----226*-----------.585''
I probably wouldn't even mess around with the TR224 when you can order directly thru Comp, their XE-R 224 lobe which is a bit more aggressive. It has 3* less duration @ the opening of the valve (.006'') and 2* more @ .200''. So, for a given LSA you will have a better idle quality with this lobe because .006'' overlap will be less. .050'' will be the same because its a comparison between a 224 and 224 lobe if that makes sense.
Here is an actual comparison.
TR 224 lobe
276 duration @ .006''
224 @ .050''
144 @ .200''
563'' Lift
Comp XE-R 224 lobe
273 duration @ .006''
224 @ .050''
146 @ .200''
581'' Lift
You can order profiles directly thru Comp or place an order at TR or TSP... Any of those shops that stock Comp lobes can do it also.
Call up and say, I want:
#3722 (224* @ .050'') XE-R as the intake lobe.
#3722 (224* @ .050'') XE-R as the exhaust lobe.
Set at a 112* lobe seperation
With 4* of advance for a 108* intake centerline, and a 116* exhaust centerline.
It's that simple.
There is no reason to stick to these 3 or 4 off the shelf profiles that everyone is using. Go and order your own custom cam.
Here are some of the XE-R profiles that are available incase some of you want to do this.
Lobe # - .050'' duration - Lift
3720----220*-----------.581''
3722----222*-----------.581''
3722----224*-----------.581''
3723----226*-----------.585''
04-13-2006, 05:51 PM
#16
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Infact... This is a lot easier.
0.006 0.05 0.2 Lift Part # Make
261 208 128 554 3707 x-e
263 210 129 556 3708 x-e
265 212 131 558 3709 x-e
267 214 133 559 3710 x-e
269 216 135 561 3711 x-e
271 218 136 563 3712 x-e
273 220 138 564 3713 x-e
275 222 140 566 3714 x-e
277 224 142 568 3715 x-e
279 226 143 570 3716 x-e
281 228 145 571 3717 x-e
283 230 147 573 3718 x-e
285 232 148 575 3719 x-e
287 234 150 576 3706 x-e
289 236 152 578 3705 x-e
261 208 128 554 3707 x-e
263 210 129 556 3708 x-e
265 212 131 558 3709 x-e
267 214 133 559 3710 x-e
269 216 135 561 3711 x-e
271 218 136 563 3712 x-e
273 220 138 564 3713 x-e
275 222 140 566 3714 x-e
277 224 142 568 3715 x-e
279 226 143 570 3716 x-e
281 228 145 571 3717 x-e
283 230 147 573 3718 x-e
285 232 148 575 3719 x-e
287 234 150 576 3706 x-e
289 236 152 578 3705 x-e
269 220 143 581 3720 xe-r
271 222 144 581 3721 xe-r
273 224 146 581 3722 xe-r
275 226 147 585 3723 xe-r
277 228 149 588 3724 xe-r
279 230 151 592 3725 xe-r
281 232 153 595 3726 xe-r
283 234 155 598 3727 xe-r
285 236 157 602 3728 xe-r
287 238 159 605 3729 xe-r
289 240 161 609 3730 xe-r
291 242 163 610 3731 xe-r
293 244 165 612 3732 xe-r
295 246 166 614 3733 xe-r
297 248 168 615 3734 xe-r
271 222 144 581 3721 xe-r
273 224 146 581 3722 xe-r
275 226 147 585 3723 xe-r
277 228 149 588 3724 xe-r
279 230 151 592 3725 xe-r
281 232 153 595 3726 xe-r
283 234 155 598 3727 xe-r
285 236 157 602 3728 xe-r
287 238 159 605 3729 xe-r
289 240 161 609 3730 xe-r
291 242 163 610 3731 xe-r
293 244 165 612 3732 xe-r
295 246 166 614 3733 xe-r
297 248 168 615 3734 xe-r
04-13-2006, 06:41 PM
#17
Originally Posted by Sport Side
I don't have any info on the Lunati lobes.
I probably wouldn't even mess around with the TR224 when you can order directly thru Comp, their XE-R 224 lobe which is a bit more aggressive. It has 3* less duration @ the opening of the valve (.006'') and 2* more @ .200''. So, for a given LSA you will have a better idle quality with this lobe because .006'' overlap will be less. .050'' will be the same because its a comparison between a 224 and 224 lobe if that makes sense.
Here is an actual comparison.
TR 224 lobe
276 duration @ .006''
224 @ .050''
144 @ .200''
563'' Lift
Comp XE-R 224 lobe
273 duration @ .006''
224 @ .050''
146 @ .200''
581'' Lift
You can order profiles directly thru Comp or place an order at TR or TSP... Any of those shops that stock Comp lobes can do it also.
Call up and say, I want:
#3722 (224* @ .050'') XE-R as the intake lobe.
#3722 (224* @ .050'') XE-R as the exhaust lobe.
Set at a 112* lobe seperation
With 4* of advance for a 108* intake centerline, and a 116* exhaust centerline.
It's that simple.
There is no reason to stick to these 3 or 4 off the shelf profiles that everyone is using. Go and order your own custom cam.
Here are some of the XE-R profiles that are available incase some of you want to do this.
Lobe # - .050'' duration - Lift
3720----220*-----------.581''
3722----222*-----------.581''
3722----224*-----------.581''
3723----226*-----------.585''
I probably wouldn't even mess around with the TR224 when you can order directly thru Comp, their XE-R 224 lobe which is a bit more aggressive. It has 3* less duration @ the opening of the valve (.006'') and 2* more @ .200''. So, for a given LSA you will have a better idle quality with this lobe because .006'' overlap will be less. .050'' will be the same because its a comparison between a 224 and 224 lobe if that makes sense.
Here is an actual comparison.
TR 224 lobe
276 duration @ .006''
224 @ .050''
144 @ .200''
563'' Lift
Comp XE-R 224 lobe
273 duration @ .006''
224 @ .050''
146 @ .200''
581'' Lift
You can order profiles directly thru Comp or place an order at TR or TSP... Any of those shops that stock Comp lobes can do it also.
Call up and say, I want:
#3722 (224* @ .050'') XE-R as the intake lobe.
#3722 (224* @ .050'') XE-R as the exhaust lobe.
Set at a 112* lobe seperation
With 4* of advance for a 108* intake centerline, and a 116* exhaust centerline.
It's that simple.
There is no reason to stick to these 3 or 4 off the shelf profiles that everyone is using. Go and order your own custom cam.
Here are some of the XE-R profiles that are available incase some of you want to do this.
Lobe # - .050'' duration - Lift
3720----220*-----------.581''
3722----222*-----------.581''
3722----224*-----------.581''
3723----226*-----------.585''
04-13-2006, 06:57 PM
#18
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There's a guy running a 226 lobe w/ .590'' in his stock headed 6.0L and then you got all of the F-body/GTO guys doing it to. But maybe you have reasons not to?
You wont run into any problems other than more cylinder fill and more power if those are problems for you or not, IDK
You wont run into any problems other than more cylinder fill and more power if those are problems for you or not, IDK
04-13-2006, 07:24 PM
#19
Originally Posted by Sport Side
There's a guy running a 226 lobe w/ .590'' in his stock headed 6.0L and then you got all of the F-body/GTO guys doing it to. But maybe you have reasons not to?
You wont run into any problems other than more cylinder fill and more power if those are problems for you or not, IDK
You wont run into any problems other than more cylinder fill and more power if those are problems for you or not, IDK
04-13-2006, 07:27 PM
#20
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I changed out my tr224 114 for a MTI C2 a few months ago. The specs are
224*/224* .581''/.581'' 112*+4
It's a single pattern camshaft with XE-R lobes.
The +4 puts it at a 108ICL for VEs of the following measured from .050''.
IVO: 4
IVC: 40
EVO: 48
EVC: -4
0* of overlap.
Thank you sportside for the cam specs.
The difference is night and day. Way more low end and it seems to make power way beyond the TR cam.
I did however change to some ported heads with 2.00" intake valves and 55cc chambers. Hopefully I can get some dyno and track numbers soon.
224*/224* .581''/.581'' 112*+4
It's a single pattern camshaft with XE-R lobes.
The +4 puts it at a 108ICL for VEs of the following measured from .050''.
IVO: 4
IVC: 40
EVO: 48
EVC: -4
0* of overlap.
Thank you sportside for the cam specs.
The difference is night and day. Way more low end and it seems to make power way beyond the TR cam.
I did however change to some ported heads with 2.00" intake valves and 55cc chambers. Hopefully I can get some dyno and track numbers soon.