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TRex owners, cam card info?

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Old 08-24-2005, 02:06 PM
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Default TRex owners, cam card info?

Anybody have their info handy on the TRex?

I got:
242/248 .608/.612 110lsa

I need:
ICL
EX closes (ATDC)
EX opens (BBDC)
IN opens (BTDC)
IN closes (ABDC

I am trying to calc dynamic compression with a setup.

Thanks
Old 08-24-2005, 02:21 PM
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Try this:
0.006 0.050 0.200

Intake Duration - ID 291 242 163 3731 LOBE T-REX
Exhaust Duration - ED 297 248 168 3734 LOBE T-REX
Lobe Center Angle - LCA (also known as LSA) 110 110 110
Intake Centerline - ICL 108 108 108


Intake Valve opens - IVO 37.5 13 -26.5 BTDC (- indicates ATDC)
Intake Valve closes - IVC 73.5 49 9.5 ABDC
Exhaust Valve Opens - EVO 80.5 56 16 BBDC
Exhaust Valve Closes - EVC 36.5 12 -28 ATDC (- indicates BTDC)
Exhaust Centerline - ECL 112 112 112
Overlap 74 25 -54.5 degrees
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Old 08-24-2005, 05:45 PM
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I tried to order a Trex yesterday and they are on back order
Old 08-24-2005, 07:17 PM
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http://ourworld.cs.com/jrp98ls1/Trex.jpg
Old 08-24-2005, 07:26 PM
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ouch.... I am coming up with 10.3:1 dynamic My static is only 11.3

Check my figures...
4.03 bore
4.00 stroke
.043 4.06 gasket
6.125 rod
.010 out of the hole
72cc chambers
Old 08-24-2005, 07:50 PM
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I come up with 11.33 static and 8.43 dynamic. Excellent in my view.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
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Old 08-24-2005, 07:54 PM
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i come up with 11.579304383638 SCR and 8.48152019083786 DCR. you are using seat timing correct and not .050?
Old 08-24-2005, 09:32 PM
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Originally Posted by jrp
i come up with 11.579304383638 SCR and 8.48152019083786 DCR. you are using seat timing correct and not .050?

Hmm this is the calc I just tried with abdc of 49*

http://www.kb-silvolite.com/calc.php?action=comp

They ask for .050 numbers +15deg. (49+15) on the in. close. I forgot to mention -2cc pistons but patrick assumed that I guess with 11.3 static.

This nets me 9.12 dcr Every online calc I try comes up with different numbers it seems.
Old 08-24-2005, 09:36 PM
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You have to use the .006" duration and ICL numbers when computing DCR, not the .050" numbers. This is throwing off your calculations.
Old 08-24-2005, 09:44 PM
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Originally Posted by mr2guru
Hmm this is the calc I just tried with abdc of 49*

http://www.kb-silvolite.com/calc.php?action=comp

They ask for .050 numbers +15deg. (49+15) on the in. close. I forgot to mention -2cc pistons but patrick assumed that I guess with 11.3 static.

This nets me 9.12 dcr Every online calc I try comes up with different numbers it seems.
that wont work. IVO @.006 is 75*. 64 != 75.

with 2cc dish i get 11.3181907515333 SCR and 8.30082722424514 DCR

thats using

IVO 39
IVC 75
EVO 82
EVC 38



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