Roller Cam identification Help Please
08-20-2001, 08:52 AM
#1
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Car: 91 Camaro RS Convertible
Engine: 385ci LT1 cnc ported heads big cam
Transmission: 4L60E automatic
Axle/Gears: 3.42 Zexel posi 7.5" rear
Roller Cam identification Help Please
I bought a roller cam off ebay and would like to verify it before installation if possible. Its suppose to be a cam from a ZZ4 motor. Here are the numbers off of the cam. 641 CPC BC7 any help if disappointing help would be appreciated.
<img border="0" src="http://www.bharris.org/images/CAM.jpg" width="500" height="100"></p>
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91 Camaro RS 5.0L Black Convertible 700R4
** Added so far **
*GM Wonderbar,Alston SFC's,spohn LCA's and Panhard rod
*Turbo City Inj Spacer
*Dual Snorkel Air Filter
*March Performance Pulleys
*GM 3.42 Gears with OEM Zexel POSI
*Edelbrock headers
*3" High Flow Cat
*3" Dynomax Exhaust
*Walbro 255 lph Fuel Pump
***Future 330hp Vortec Crate with LT4 hotcam and 454 TBI
<img border="0" src="http://www.bharris.org/images/CAM.jpg" width="500" height="100"></p>
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91 Camaro RS 5.0L Black Convertible 700R4
** Added so far **
*GM Wonderbar,Alston SFC's,spohn LCA's and Panhard rod
*Turbo City Inj Spacer
*Dual Snorkel Air Filter
*March Performance Pulleys
*GM 3.42 Gears with OEM Zexel POSI
*Edelbrock headers
*3" High Flow Cat
*3" Dynomax Exhaust
*Walbro 255 lph Fuel Pump
***Future 330hp Vortec Crate with LT4 hotcam and 454 TBI
08-20-2001, 12:46 PM
#2
BRH,
I can't tell by either the numbers or the photo. I'd have to set it in blocks or attack it with a pair of calipers to get gross lift numbers for comparison. A check with the mic or calipers from front to back on a lobe should also decide whether it is a roller or flat tappet design.
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Later,
Vader
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"Get UP - Drop the bombshell!"
Adobe Acrobat Reader
I can't tell by either the numbers or the photo. I'd have to set it in blocks or attack it with a pair of calipers to get gross lift numbers for comparison. A check with the mic or calipers from front to back on a lobe should also decide whether it is a roller or flat tappet design.
------------------
Later,
Vader
------------------
"Get UP - Drop the bombshell!"
Adobe Acrobat Reader
08-20-2001, 07:10 PM
#3
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The nose looks like a roller cam, but the wear patterns on the lobes sorta look like flat.
Any possibility some idiot used a ZZ4 cam with flat tappets?
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, ZZ3 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back, Spohn SFCs).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet (Holley 3310 on the way), GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
Any possibility some idiot used a ZZ4 cam with flat tappets?
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, ZZ3 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back, Spohn SFCs).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet (Holley 3310 on the way), GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
08-20-2001, 09:14 PM
#5
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Car: Take
Engine: Your
Transmission: Pick
GM camshafts have the last three digits of the part number stamped into it. "071" being the last three for the "ZZ3" camshaft (the same cam used in the "ZZ4" engine).
I would assume your "641" is the last three of the part number to the cam, but unfortunatly, I can't find a GM cam w/ that last three.
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I would assume your "641" is the last three of the part number to the cam, but unfortunatly, I can't find a GM cam w/ that last three.
------------------
FREE CARFAX Record Check
If you live in Southeastern US, check us out!
South East Thirdgen
GM Master Tech
ASE Master Tech + L1
Savannah, GA
'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
3.73 Posi
4wheel Disc Brakes
Summit 1-5/8" headers, 2.5" Dynomax catback.
Best 1/8: 9.519@72.74
'97 Bonneville SSE
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