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LG4 Specs

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Old Jan 23, 2001 | 12:11 PM
  #1  
Apeiron's Avatar
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Joined: Jan 2000
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
LG4 Specs

Can anyone tell me the specs for the LG4 cam? Flow numbers for the heads would be nice, too, if anyone has them.


------------------
1984 Camaro Z28 Astral Silver w/ 2 1/2" cowl induction hood
Engine: Decked 385 cid 4 bolt w/ oil cooler, 9.6:1 compression, ARP fasteners, 600 cfm Performer carburetor, Torker II intake, Performer RPM Heads, XE268H cam, Magnum roller tip rockers, MSD6AL ignition, Blaster2 coil, recurved HEI distributor
Exhaust: Terminator headers, Custom 3" TIG welded stainless exhaust, Twister muffler
Transmission: 4L60 w/ Corvette servo, .500 boost valve, TransGo 7-CS clutch springs, 700 PKH pump rings, 700-2 reprogramming kit, Borg-Warner High-Energy frictions & bands, 2400 RPM lockup torque converter
Drivetrain: 2.73:1 limited-slip Dana 44 w/ disc brakes
Tires: Front P225/50VR15 Rear P265/50VR15 Eagles

Because you can always sleep in your car, but you can't drive your house.
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Old Jan 8, 2003 | 01:34 PM
  #2  
87Formula4bbl's Avatar
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Joined: Jul 2002
Posts: 815
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From: Toledo, OH
Car: '87 Formula
Engine: 350
Transmission: Auto
I know this is an old thread, but I'm curious about the heads flow numbers also. The cam specs are readily available, I just want to know if anyone has flow numbers for the heads. Mine are the 081 castings. I would like to plug these numbers into Desktop Dyno.

Thanks.
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Old Jan 8, 2003 | 08:49 PM
  #3  
Sitting Bull's Avatar
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Joined: Jun 2001
Posts: 3,238
Likes: 4
From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
Chris,

I thought you had 3.54 gears?

The peanut cam has the following specs:

.350 lift intake and .385 lift exhaust, with a 109 LSA.

87formula,

Open up a blank Notepad document, name it 305 Stock.flw and past the following into it:

3.10
Low Performance/Stock Ports And Valves
0
8
1 1.840000
1 25.000000
1 0.200000
1 0.300000
1 0.400000
1 0.500000
1 0.550000
1 0.600000
1 0.650000
1 0.710000
1 119.000000
1 157.000000
1 190.000000
1 196.000000
1 199.000000
1 199.000000
1 202.000000
1 202.000000
1 1.500000
1 25.000000
1 0.200000
1 0.300000
1 0.400000
1 0.500000
1 0.550000
1 0.600000
1 0.650000
1 0.710000
1 87.000000
1 104.000000
1 111.000000
1 116.000000
1 117.000000
1 117.000000
1 118.000000
1 118.000000
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Old Jan 8, 2003 | 08:54 PM
  #4  
87Formula4bbl's Avatar
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Joined: Jul 2002
Posts: 815
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From: Toledo, OH
Car: '87 Formula
Engine: 350
Transmission: Auto
Wow, thanks a lot SittingBull! I've read through your port and polish thread many times and I know you have the flow numbers for your ported heads listed, just not the stock flow numbers.
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Old Jan 8, 2003 | 09:06 PM
  #5  
Sitting Bull's Avatar
Supreme Member
 
Joined: Jun 2001
Posts: 3,238
Likes: 4
From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
Originally posted by 87Formula4bbl
Wow, thanks a lot SittingBull! I've read through your port and polish thread many times and I know you have the flow numbers for your ported heads listed, just not the stock flow numbers.
No, the ones listed here are just stock LG4 heads. I'll email you the home ported 305 flow file, if you like.
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Old Jan 8, 2003 | 09:30 PM
  #6  
Apeiron's Avatar
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Joined: Jan 2000
Posts: 20,981
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Originally posted by Sitting Bull

I thought you had 3.54 gears?
2 years ago when I posted that I had 2.73s.
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