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383 oil pump?..which one?

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Old Sep 10, 2006 | 01:00 PM
  #1  
Wishmaster's87IROC's Avatar
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
383 oil pump?..which one?

in my bottom end I have a...what I think is a mellings ..the number on it is
m155...anyone know what that is? is it a high volume or high pressure?..Ive heard you dont want a high pressure pomp as it could create to much pressure and blow **** out....

I dont mind changing it cause they are not expensive..

whats the word on the pump?
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Old Sep 10, 2006 | 03:37 PM
  #2  
JAYDUBB's Avatar
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Joined: Jan 2001
Posts: 769
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From: DC_MD_VA Area
Car: 1991 Camaro RS
Engine: L03 305 V-8 (for now ;) )
Transmission: T-5 5 speed
Axle/Gears: stock... whatever that means :)
Standard pressure and volume...

Melling OEM Replacement Oil Pumps: MEL-M155 - summitracing.com
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Old Sep 10, 2006 | 09:03 PM
  #3  
Wishmaster's87IROC's Avatar
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
I guess Im good to go on the pump then...its not either...so it should be ok...
thanks for the info
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Old Sep 10, 2006 | 11:46 PM
  #4  
Sonix's Avatar
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
whats the difference between the Mel-155, and the MEL-55 ? MEL-155 shows 3/4" pickup diameter, 55 says nothing about that...?
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Old Sep 10, 2006 | 11:58 PM
  #5  
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
M55 has a 5/8" pickup.
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