DragLS1

Does anyone know the advertised duration on the T-rex? The comp Xtreme LS1 lobes have an intensity number of 49 degrees. I need to compare the T-rex but I need the advertised numbers and at what lift (i.e @ .006"). Less is unquestionably more.

Any help would be greatly appreciated.

Thanks.

DAPSUPRSLO

iTrader: (14)

Just look for the 242 xe-r lobe. I believe they are the exact same lobe as that of the intake. 248 xe-r is for the exhaust. Must all advetised numbers are at .006".

DragLS1

Yeah the XE-R lobes are the most aggressive H-roller design that I could find, their intensity # being 49. The lobes that I am considerind are the 244, 248, .612, .615 on a 109 LSA. A bit different than the T-rex. I just want to see how they compare.

Thanks.

Spellbound

Here is a cam card of a T-Rex, It's all greek to me, hope it helps.

DragLS1

Thanks a bunch...this helps

jrp

iTrader: (16)

sweet, added to my collection. seems like thunders lobes are all ~50 - 52 ramp rate

DragLS1

These lobes are not quite as fast as the comp cam lobes with their intensity being #51 as compared to comp's #49. Not only that but comp is about $32.00 cheaper from their factory than thunderracing. This should be an interesting comparison. Of course the cams are not identical per duration and lift but quite close...

2001 Pewter WS6

iTrader: (43)

That is the same specs I am putting in my 408 but on a 112LSA +2 advance. What size motor are you putting this in???

DragLS1

The stock 346 is getting this cam...A bit big but I want to see how fast I can go with a cam only 6 speed car.

DAPSUPRSLO

iTrader: (14)

The comp slk lobes are much more agressive then the XE-R. I have a 239 at .050" lobe which is 1 degree larger at .200" then the 242 xe-r lobe.

DAPSUPRSLO

iTrader: (14)

Lobe#, Dur. @ .006", .050", .200", & Lift w/1.7 rocker
2124 265 215 142 .629"
2125 269 219 145 .632"
2126 273 223 149 .636"
2127 277 227 153 .639"
2128 281 231 156 .643"
2129 285 235 160 .646"
2130 289 239 164 .649"
2131 293 243 168 .653"
2132 297 247 171 .656"
2133 301 251 175 .660"
2134 305 255 179 .663"
2135 309 259 183 .663"
2136 313 263 186 .663"

DragLS1

I guess I should have specified: the most intense lobe with the duration that I want under .620" lift so I can use the stock long block minus the cam

DAPSUPRSLO

iTrader: (14)

Be careful when speaking of lobe intensity. The advertised verses .050" duration intensity is very similar between these cams (50.6 in the intake lobe of the TREX verses 50 for the intake lobe of my cam). Now compare the at .050" verses at .200" intensity (79.8 for the intake lobe of the TREX verses 75 for the intake lobe of my cam). What this equates to is very similar intensity from the .006" to .050" range and much greater intensity (more agressive) in my intake lobe from the .050" to .200". range.

DAPSUPRSLO

iTrader: (14)

Gottcha

DragLS1

Thanks for pointing that out as the only comparison I was making was between .006 and .050. Either way the comp lobe has the most intensity for what I need.

Thanks

Jess