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#2
03-12-2009, 10:18 PM
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Re: Low oil pressure in ZL-1
Al, according to what i have read. It goes in the hole closest to the block,or right behind the oil filter thread rod if you are running an oil cooler. So makes me believe the other hole if not running a oil cooler. I would contact your GM dealer or a GM TECH for a concrete answer. Roger
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67 Z28, 67 RS/SS 396 Canadian, 73 Camaro Z28/LT Carolina Blue 
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#3
03-12-2009, 10:45 PM
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Re: Low oil pressure in ZL-1
[ QUOTE ]
Al, according to what i have read. It goes in the hole closest to the block,or right behind the oil filter thread rod if you are running an oil cooler. So makes me believe the other hole if not running a oil cooler. I would contact your GM dealer or a GM TECH for a concrete answer. Roger [/ QUOTE ] Roger thats right..finally got a concrete answer from someone in the know..tech line gave me the wrong answer!!  ..getting a second pressure reg tomorrow and will try again.  ALber
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1969 9566AA COPO Chevelle M-22 1969 Malibu 489 ZL-1 T-56/4.56 1969 Beaumont 540 th400 3.70 1969 Chevelle 300 Deluxe 427 ZL-1 M 22W 1970 Olds 442 W 30 2 door post 1969 Ply. GTX 426 hemi auto. Blue. 1940 Dodge pick up Durango 4X4 1968 Camaro ragtop LSA ZL1
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#4
03-12-2009, 11:32 PM
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Re: Low oil pressure in ZL-1
Alss, I removed my oil filter and it is the hole furthest from the block (the shallowest one to the step inside the hole). The one that is on the outside rail of the filter boss. Here is a photo of mine. You have to drive it in with a socket and take a chisel and put a small stake to secure it. [image]
 [/image]
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1962 Oldsmobile Jetfire, Factory all Aluminum V8 Turbocharged and Methanol Injected TURBO ROCKET engine, 4 speed Hydramatic, 4 link rear suspension, 3.36 Anti-Spin differential, California car, PS, PB, PW, AC, Jetfire 2 option package.
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#5
03-12-2009, 11:40 PM
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Re: Low oil pressure in ZL-1
[ QUOTE ]
Alss, I removed my oil filter and it is the hole furthest from the block (the shallowest one to the step inside the hole). The one that is on the outside rail of the filter boss. Here is a photo of mine. You have to drive it in with a socket and take a chisel and put a small stake to secure it. [image] [/image] [/ QUOTE ] Thats where I put it..still no difference..20-25psi at best cold..guess its coming out after all ..hope it aint hurt ..thanks to everyone for there help..especially 69SSZL1 for removing his oil filter ..messy job ..I've done it 3 times today! and TXSS for phone support Ill keep everyone posted as to the problem.ALbert
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1969 9566AA COPO Chevelle M-22 1969 Malibu 489 ZL-1 T-56/4.56 1969 Beaumont 540 th400 3.70 1969 Chevelle 300 Deluxe 427 ZL-1 M 22W 1970 Olds 442 W 30 2 door post 1969 Ply. GTX 426 hemi auto. Blue. 1940 Dodge pick up Durango 4X4 1968 Camaro ragtop LSA ZL1
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#6
03-12-2009, 11:48 PM
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Re: Low oil pressure in ZL-1
OK... what about the 3 small (1/8") pipe plugs that go in the lifter valley?
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1962 Oldsmobile Jetfire, Factory all Aluminum V8 Turbocharged and Methanol Injected TURBO ROCKET engine, 4 speed Hydramatic, 4 link rear suspension, 3.36 Anti-Spin differential, California car, PS, PB, PW, AC, Jetfire 2 option package.
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#7
03-13-2009, 12:10 AM
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Re: Low oil pressure in ZL-1
****Not saying it is,*****but I had a similar problem years ago on a rebuild--low oil pressure --oil pressure would increase some if I brought up the rpms..but would drop very low once the rpms came down----------We wound up changing the defective cam bearings,,,,Note: this is a last resort..The bright side of this problem is that you caught it in time,......
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#8
03-13-2009, 12:26 AM
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Re: Low oil pressure in ZL-1
You did put the relief valve in pointing the right way?
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1962 Oldsmobile Jetfire, Factory all Aluminum V8 Turbocharged and Methanol Injected TURBO ROCKET engine, 4 speed Hydramatic, 4 link rear suspension, 3.36 Anti-Spin differential, California car, PS, PB, PW, AC, Jetfire 2 option package.
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#9
03-13-2009, 12:39 AM
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Re: Low oil pressure in ZL-1
[ QUOTE ]
You did put the relief valve in pointing the right way? [/ QUOTE ] OK which is the right way??..looked to be only one way but ...... also noticed when we were running the oil pump with a drill it never seemed to load up when it caught prime..Usually they really need some power to turn..this one never seems to prime and load the drill..maybe bad oil pump??
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1969 9566AA COPO Chevelle M-22 1969 Malibu 489 ZL-1 T-56/4.56 1969 Beaumont 540 th400 3.70 1969 Chevelle 300 Deluxe 427 ZL-1 M 22W 1970 Olds 442 W 30 2 door post 1969 Ply. GTX 426 hemi auto. Blue. 1940 Dodge pick up Durango 4X4 1968 Camaro ragtop LSA ZL1
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