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need help on performance heads
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bigjoe12
New User
| Posts: 27
| Joined: 01/08
Posted: 09/23/09 08:26 PM
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for my car that 1984 corvette i going to put on new heads and with the chip i got the makers of the chip said i can use any head with 72cc to 76cc combustion chamber and 170cc intake runners but you can use 165cc or 180cc but not sugested with the cam i have that is 2040 compucam
the heads i found that will work are world makes an cast S/R torquer heads with 76cc and 170cc R.H.S makes an cast pro torquer heads 76cc and 170cc dart makes an iron eagle head thats 72cc with 165cc or 180cc
out of these heads what is the best bet
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Posted: 09/24/09 03:28 AM
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i don't like s/r torquers
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Posted: 09/24/09 05:00 AM
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I would go with the dart 180CC heads.
Horsepower sells Engines and torque wins races.
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Posted: 09/24/09 06:34 AM
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i second pontiacman
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Posted: 09/24/09 09:03 AM
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The darts are the better head for sure.
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Posted: 09/24/09 03:21 PM
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go with the darts
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bigjoe12
New User
| Posts: 27
| Joined: 01/08
Posted: 09/24/09 04:19 PM
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thanks for that guys but is the dart 165cc better for me with mild 2040 cam or should i go [go big or go home] with the 180cc intake runners
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Posted: 09/24/09 05:25 PM
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What is the lift and duration of that cam.
Horsepower sells Engines and torque wins races.
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Posted: 09/25/09 03:27 AM
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You need to post all specs on the cam card. Lift and duration only tell part of the story to how a cam will act. Also list any other mods made to engine or car
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Posted: 09/25/09 11:23 AM
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the cam reads as per below.
Lift: Intake @Cam 2934 @Valve 440 All Lifts are based on zero lash and theoretical rocker arm ratios. Exhaust @ Cam 3027 @Valve 454 Rocker Arm Ratio 1.5 CamTiming: --- @--- Lift: Opens Closes ADV Duration Intake --- --- 270 Exhaust --- --- 276 Spring Requirements: Triple Dual Outer Inner Part Number 99848 Loads Closed 105 LBS@ 1.700 or 1 45/64 Open 265 LBS@ 1.280 Recommended RPM range with matching components Minimum RPM --- Maximum RPM --- Valve Float --- CamTiming: TAPPET @.050 Lift: Opens Closes Max Lift Duration Intake (4) ATDC 34 ABDC 109 210 Exhaust 47 BBDC (11) BTDC 119 216 Remarks:
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Posted: 09/25/09 11:26 AM
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What gears do you have, are you running a 5 speed or an auto? What kind of stall?
I would say if you are running a stock set up the 165cc will help your bottom end. this cam will probably run out of boogy at the top any way. The 180cc runners won't kill you and will probably make more power up top, but I am assuming this engine will be primarily street driven where the bottom end counts. This cam will like a little steeper than stock gears.
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Posted: 09/27/09 09:27 PM
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Are you running the stock TPI? Then run the smaller head. Look at the flow numbers too, get a head in that 165cc range that flows the most at your cam's max lift.
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