Trying to put in a higher lift cam
#1
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Trying to put in a higher lift cam
Ok, i have stock vortec heads, and i am trying to run this cam...
http://www.summitracing.com/parts/CCA-08-433-8/
Now here's the link i'm looking at which states there's a "ghetto grind" method to use on your retainers where you grind them to where you can get to a .550" lift?(link found here, http://www.nastyz28.com/forum/showthread.php?t=56505)
Now i see alot of people saying this works but before i go do something stupid i want to make sure i have this right. So if i grind my retainers 3/32 of an inch, and lets say i purchased these valve springs...
http://sdparts.com/details/scoggin-d...ter/sd1004-1-0
Would i be able to run those heads with that cam safely?
http://www.summitracing.com/parts/CCA-08-433-8/
Now here's the link i'm looking at which states there's a "ghetto grind" method to use on your retainers where you grind them to where you can get to a .550" lift?(link found here, http://www.nastyz28.com/forum/showthread.php?t=56505)
Now i see alot of people saying this works but before i go do something stupid i want to make sure i have this right. So if i grind my retainers 3/32 of an inch, and lets say i purchased these valve springs...
http://sdparts.com/details/scoggin-d...ter/sd1004-1-0
Would i be able to run those heads with that cam safely?
#4
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Re: Trying to put in a higher lift cam
http://www.ebay.com/itm/VORTEC-VALVE...item4843689115
they have springs for both hydrolic roller cams an flat tappet cams
they have springs for both hydrolic roller cams an flat tappet cams
#5
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Re: Trying to put in a higher lift cam
#6
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Car: 91 Z28, 2000 T/A
Engine: SBC 355, LS1
Transmission: T56, T56
Axle/Gears: 10bolt 3.73, 3.42
Re: Trying to put in a higher lift cam
You better pin the rocker studs or put some screw in studs in or you will pull the pressed in studs out with the springs that are needed to handle more lift. I have a set of LS2/6 beehive springs and the adapter retainers to put them on SBC heads, you can run a .550 lift cam with them. Shoot me a PM if your interested.
#7
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Re: Trying to put in a higher lift cam
You can see my post that is linked above. On unmodified heads, you need to measure each valve's clearance. Mine would have been very close even at .525" lift. Beyond what most builders recommend as safe. I used 1.5 rockers because of that instead of the 1.6s recommended for the hotcam.
Are the heads already installed in the car? If not I HIGHLY suggest having the machine work done to them now. I only done what I done since it was installed in the car.
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#8
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Car: 91 Z28, 2000 T/A
Engine: SBC 355, LS1
Transmission: T56, T56
Axle/Gears: 10bolt 3.73, 3.42
Re: Trying to put in a higher lift cam
You had better make several measurements before you try to use that setup with a .550 lift cam.
You can see my post that is linked above. On unmodified heads, you need to measure each valve's clearance. Mine would have been very close even at .525" lift. Beyond what most builders recommend as safe. I used 1.5 rockers because of that instead of the 1.6s recommended for the hotcam.
Are the heads already installed in the car? If not I HIGHLY suggest having the machine work done to them now. I only done what I done since it was installed in the car.
You can see my post that is linked above. On unmodified heads, you need to measure each valve's clearance. Mine would have been very close even at .525" lift. Beyond what most builders recommend as safe. I used 1.5 rockers because of that instead of the 1.6s recommended for the hotcam.
Are the heads already installed in the car? If not I HIGHLY suggest having the machine work done to them now. I only done what I done since it was installed in the car.
Although I should have specified. Springs will handle .550 lift, ensuring the retainer to seal clearance is up to the installer/mechanic. I had planned to put all that on stock L98 heads with a ZZ4 cam I have since went an alternative (more powerful) direction.
#9
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Re: Trying to put in a higher lift cam
You had better make several measurements before you try to use that setup with a .550 lift cam.
You can see my post that is linked above. On unmodified heads, you need to measure each valve's clearance. Mine would have been very close even at .525" lift. Beyond what most builders recommend as safe. I used 1.5 rockers because of that instead of the 1.6s recommended for the hotcam.
Are the heads already installed in the car? If not I HIGHLY suggest having the machine work done to them now. I only done what I done since it was installed in the car.
You can see my post that is linked above. On unmodified heads, you need to measure each valve's clearance. Mine would have been very close even at .525" lift. Beyond what most builders recommend as safe. I used 1.5 rockers because of that instead of the 1.6s recommended for the hotcam.
Are the heads already installed in the car? If not I HIGHLY suggest having the machine work done to them now. I only done what I done since it was installed in the car.
Also, so for those springs, again ill ask the ones from alexs parts, are those a reputable product?
and 3rd gen will...pmed
#10
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Car: 91 Z28, 2000 T/A
Engine: SBC 355, LS1
Transmission: T56, T56
Axle/Gears: 10bolt 3.73, 3.42
Re: Trying to put in a higher lift cam
PM'd you back, Also PM'd you about your cam selection.
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Car: 88 GTA
Engine: 383
Transmission: 700 r
Re: Trying to put in a higher lift cam
Hope you have enough compression and stall and rear gears to make the most of that cam.
#12
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Car: 1984 camaro z28
Engine: sbc 383
Transmission: Th400
Axle/Gears: Moser 9", 4.11 gear
Re: Trying to put in a higher lift cam
10.5:1 compression, 3.73 rear gears, and a 2500 stall(i know needs bigger).
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