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LT1 cam specs

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Old May 7, 2003 | 03:44 PM
  #1  
f-crazy's Avatar
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
LT1 cam specs

im tryin to see what my combo would make with the stock lt1 cam..

i have the duration and lift figures but i need the valve timings..
thanks guys!

Rob
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Old May 7, 2003 | 04:00 PM
  #2  
wm_sorg's Avatar
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From: Annandale, VA
Car: 1991 Formula Firebird
Engine: 2001 LS1 Modded
Transmission: 2001 4L60E Yank SS3600 TC
Check lt4.com They might have that information there (lt1 as compared to an lt4.)
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Old May 7, 2003 | 06:51 PM
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f-crazy's Avatar
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
well the cam was the same between LT1 and LT4's

the LT4 had 1.6 roller rockers. the LT1 were stamped 1.5

ill check thanks!!
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Old May 8, 2003 | 01:44 AM
  #4  
Zepher's Avatar
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Cams are different for the LT1 and LT4.
_____LT1 LT4 LS1 LS6
INTAKE
.200=119 139 133 126cfm
.300=171 190 189 184
.400=199 225 223 225
.500=207 242 234 251
.600=201 237 236 257
EXHAUST
.200=94 106 92 108cfm
.300=124 137 143 143
.400=141 162 163 166
.500=153 174 176 180
.600=156 180 183 188

CAM SPECS STOCK

96-97 LT1 Dur 200/207 lift .447/.459 w\ 117 LSA
96 LT4 dur 203/210 lift .476/.479 w\ 115 LSA
98-00 LS1 dur 202/210 lift .496/.496 w\ 116LSA
01-02 LS1 dur 198/197 lift .478/.478 w\ 115LSA
01 LS6 dur 204/211 lift .525/.525
02 LS6 dur 204/218 lift .551/.547


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Old May 8, 2003 | 02:52 PM
  #5  
f-crazy's Avatar
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
i guess the cams werent the same..

i have the duration and the lift figures already , and now another source lol.....but i would really like to see the valve timings

if anyone has the valve timings for an l98 cam thatll be fine...

thanks guys!
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Old May 19, 2003 | 11:30 PM
  #6  
SilverSub122's Avatar
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From: Selma, Ca (8th layer of hell in the summer)
will any lt1 cam from any year work in an emmissions legal 305? i want one but i dont know what lift duration etc i need
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