TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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check my math? please.

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Old Sep 2, 2005 | 07:02 AM
  #1  
mean57's Avatar
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Joined: May 2004
Posts: 452
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From: plainfield, il
Car: 87 gta
Engine: L98
Transmission: 700r4
check my math? please.

would this cam with 1.6 rockers work for my application.
Product Line: Crane CompuCam Camshafts
Cam Style: Hydraulic roller tappet
Basic Operating RPM Range: 2,000-5,500 RPM
Intake Duration 050 inch Lift: 214
Exhaust Duration 050 inch Lift: 220
Duration at 050 inch Lift: 214 int./220 exh.
Advertised Intake Duration: 270
Advertised Exhaust Duration: 276
Advertised Duration: 270 int./276 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.452
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.465
Valve Lift with Factory Rocker Arm Ratio: 0.452 int./0.465 exh. lift
Lobe Separation (degrees): 112
Intake Valve Lash (in): 0.000
Exhaust Valve Lash (in): 0.000
Computer Controlled: Yes
Grind Number: 2032
CARB EO Number: D-225-22
Quantity: Sold individually.

i have slp cold air intake. twin 52 t/b, ported and siamesed plenum, AS&M semi siamesed large tube runners and a big mouth manifold. (stock heads )

longtube header exhaust out the bottem.

was wondering if the 1.6 rockers would be to much?
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Old Sep 2, 2005 | 02:50 PM
  #2  
mean57's Avatar
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From: plainfield, il
Car: 87 gta
Engine: L98
Transmission: 700r4
ttt
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Old Sep 2, 2005 | 04:24 PM
  #3  
Fevre's Avatar
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Joined: Jan 2003
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From: Hartland MI
Car: 89 Formula
Engine: 355
Transmission: 700r4
Axle/Gears: 3.73
You are looking at .496 ex lift with 1.6 rockers, not sure if stock heads will like that unless you change out the springs.
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Old Sep 2, 2005 | 06:20 PM
  #4  
mean57's Avatar
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From: plainfield, il
Car: 87 gta
Engine: L98
Transmission: 700r4
that's what i needed to know. thanks
mean57
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