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Old Apr 9, 2014 | 12:52 PM
  #1  
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From: Northern NJ
Car: 1990 IROC-Z
Engine: 355/AFR 210
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Lowering engine

I may need to lower my engine a 1/2 inch for hood clearance issue with air cleaner. I will be running a small block with perf RPM intake Holley 4150 carb and flat 84 Z28 style hood. Thanks for any help.
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Old Apr 10, 2014 | 08:05 PM
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Car: 1979 Z28 / 1990 RS
Engine: Matching 350 / 305 TBI
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Axle/Gears: 3.73
Re: Lowering engine

Thinner air filter or another intake honestly. You dont want to mess with the motor trans alignment.
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Old Apr 11, 2014 | 02:17 PM
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From: Shakopee, Mn
Car: 89 Iroc
Engine: 305TPI
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Re: Lowering engine

Just look at the distance between the oil pan and the k-member. I doubt you will be able to go down an inch unless you hack up your k-member and like mentioned above you will then change the angle of your drive line.
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Old Apr 11, 2014 | 07:20 PM
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From: Northern NJ
Car: 1990 IROC-Z
Engine: 355/AFR 210
Transmission: POWERGLIDE
Axle/Gears: MOSER 12 BOLT 5.36 1/8 MILE ONLY
Re: Lowering engine

Originally Posted by Drkhrse89
Just look at the distance between the oil pan and the k-member. I doubt you will be able to go down an inch unless you hack up your k-member and like mentioned above you will then change the angle of your drive line.
I am only looking to lower 1/4 to a 1/2 inch and was wondering if anyone has done this...thanks for any help
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Old Apr 13, 2014 | 08:53 PM
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From: New Germany, MN
Car: 1986 Iroc
Engine: 5.3
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Re: Lowering engine

I lowered my motor in my car but I have a motor plate not factory mounts. I recommend a modified air cleaner.
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Old Apr 14, 2014 | 05:45 AM
  #6  
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Car: 86 Trans Am
Engine: 408 stroker sbc
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Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: Lowering engine

You would need to use a custom made solid motor mount since I do t believe there is enough room to use a two piece mount like factory.

Get a different air cleaner or a raises/cowl hood. Lowering the engine will create clearance issues with the oil pan and exhaust, also the oil pan may sit lower then the subframe and thats not a good idea.
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Old Apr 14, 2014 | 07:52 AM
  #7  
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From: Spring Hill, Fl.
Car: 87 iroc-z
Engine: 454
Transmission: th350
Axle/Gears: 3.73
Re: Lowering engine

get a drop base air cleaner. you can easily lower the filter an inch or more.
http://www.summitracing.com/search?k...20air%20filter
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Old Apr 14, 2014 | 08:41 AM
  #8  
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From: Milwaukee
Car: 1984 Z28
Engine: Vortec 350, hotcam
Transmission: T56
Axle/Gears: 3.73
Re: Lowering engine

I'm using a performer rpm intake with a 3/4" adapter to my qjet and a drop base air cleaner with a 2" filter in my 84 and it fits
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Old Apr 14, 2014 | 10:04 PM
  #9  
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Lowering engine

Originally Posted by grover85
I lowered my motor in my car but I have a motor plate not factory mounts. I recommend a modified air cleaner.
Same here. Front and rear motor plates with no side mounts. Mine is lowered and pushed back as far as it would go between the frame rails but you'll be much better of getting a drop base air cleaner or investing in a low cowl hood.
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Old Apr 15, 2014 | 07:57 AM
  #10  
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From: Northern NJ
Car: 1990 IROC-Z
Engine: 355/AFR 210
Transmission: POWERGLIDE
Axle/Gears: MOSER 12 BOLT 5.36 1/8 MILE ONLY
Re: Lowering engine

Originally Posted by Gsoleski
I'm using a performer rpm intake with a 3/4" adapter to my qjet and a drop base air cleaner with a 2" filter in my 84 and it fits
What style hood are you using?
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Old Apr 15, 2014 | 09:51 AM
  #11  
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From: Milwaukee
Car: 1984 Z28
Engine: Vortec 350, hotcam
Transmission: T56
Axle/Gears: 3.73
Re: Lowering engine

The stock hood without insulation
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Old Apr 15, 2014 | 01:15 PM
  #12  
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From: Northern NJ
Car: 1990 IROC-Z
Engine: 355/AFR 210
Transmission: POWERGLIDE
Axle/Gears: MOSER 12 BOLT 5.36 1/8 MILE ONLY
Re: Lowering engine

Originally Posted by Gsoleski
The stock hood without insulation
Thank you for info
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Old Apr 18, 2014 | 06:43 PM
  #13  
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From: Winnipeg, Manitoba
Car: 86 Camaro IROC-Z
Engine: 565ci 900 hp
Transmission: T56 Magnum by RPM Transmissions
Axle/Gears: Moser 9" w/4:56 Detroit Locker
Re: Lowering engine

Ed quay makes a lower side mounts, there is also a guy on racing junk that sells up to 3 inch drop air cleaner. I bought one and it is a great piece

Last edited by 572_Rat; Apr 18, 2014 at 06:48 PM.
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Old Apr 18, 2014 | 09:46 PM
  #14  
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From: Northern NJ
Car: 1990 IROC-Z
Engine: 355/AFR 210
Transmission: POWERGLIDE
Axle/Gears: MOSER 12 BOLT 5.36 1/8 MILE ONLY
Re: Lowering engine

Originally Posted by 572_Rat
Ed quay makes a lower side mounts, there is also a guy on racing junk that sells up to 3 inch drop air cleaner. I bought one and it is a great piece
Thank you for information.... I will look into it
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