Lunati 224 vs Thunders 224
Apr 13, 2006 | 07:39 PM
#22
Thread Starter
TECH Veteran
iTrader: (1)
Joined: May 2002
Posts: 4,039
Likes: 1
From: Olathe, Kansas
Originally Posted by joshluther
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.
Apr 13, 2006 | 07:47 PM
#24
Thread Starter
TECH Veteran
iTrader: (1)
Joined: May 2002
Posts: 4,039
Likes: 1
From: Olathe, Kansas
Originally Posted by joshluther
I'm running Manley dual springs. I don't know how long they'll last. But I seem to change major engine parts at every oil change. 
Apr 13, 2006 | 07:52 PM
#25
It's not because I'm breaking things. I'm just not affraid to try different things. Cams are cheap and really easy to change. I know it's not really different it is still an "Off The Shelf" cam. But I don't think theres another truck with one.
Apr 15, 2006 | 10:22 AM
#26
Hey Josh, What Motor Are You Running That Cam In? 5.3? Im Wondering, Because Now, I Am Second Guessing That Tr224 I Have Sittin In Front Of Me... That C1 Cam Is Very Tempting Because I Live About 15 Minutes From Mti, So I Could Go Up There & Talk To Them. Just Trying To Explore My Options.... That Is Really Great Gas Mileage. I Barely Get That In My Stock Rcsb.... WHAT KIND OF IDLE CARACTERISTICS DOES THAT C1 CAM HAVE COMPARED TO THE TR224?
Apr 15, 2006 | 10:59 AM
#27
Originally Posted by LS1TRUCKGUY
Hey Josh, What Motor Are You Running That Cam In? 5.3? Im Wondering, Because Now, I Am Second Guessing That Tr224 I Have Sittin In Front Of Me... That C1 Cam Is Very Tempting Because I Live About 15 Minutes From Mti, So I Could Go Up There & Talk To Them. Just Trying To Explore My Options.... That Is Really Great Gas Mileage. I Barely Get That In My Stock Rcsb.... WHAT KIND OF IDLE CARACTERISTICS DOES THAT C1 CAM HAVE COMPARED TO THE TR224?
Apr 15, 2006 | 12:30 PM
#28
sportside - just a thought, but wouldn't the lunati be a little more salty of a cam, all things being equal, when just comparing adv & @ .050 duration numbers.
the comp 222/228 is 273/281, where the lunati 222/228 is 272/278. don't know the .200 specs on the lunati, so couldn't compare there.
you know way more than i do about VE than i do, so if i am talking out my *** just let me know.
the comp 222/228 is 273/281, where the lunati 222/228 is 272/278. don't know the .200 specs on the lunati, so couldn't compare there.
you know way more than i do about VE than i do, so if i am talking out my *** just let me know.
Apr 15, 2006 | 12:39 PM
#29
I didn't see where the Lunati lobe's advertised specs were listed? But given equal .050'' and advertised is larger, the ramp rate will be slower. But, you never know...
For example, there's some lobes that are actually slower from .006'' (advertised) to .050'' but by .200'' the ramp speed has increased dramatically.
Maybe it is the Lunati's I'm thinking of...
MoreGrip posted some specs on them where they come off the seat very quick but by .200'', duration is similar to a Comp X-E High Lift lobe.
CONCLUSION: Not all lobes are equal
For example, there's some lobes that are actually slower from .006'' (advertised) to .050'' but by .200'' the ramp speed has increased dramatically.
Maybe it is the Lunati's I'm thinking of...
MoreGrip posted some specs on them where they come off the seat very quick but by .200'', duration is similar to a Comp X-E High Lift lobe.
CONCLUSION: Not all lobes are equal