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Polyurethane Engine mounts

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Old Jul 1, 2006 | 07:49 PM
  #1  
pg29's Avatar
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From: Toronto, Canada
Car: 88 GTA
Engine: LS1
Transmission: T56
Axle/Gears: 3.23
Polyurethane Engine mounts

hey guys, i tried searching but i didn't come up with much. What polyurethane engine mounts do you guys recommend for a 350tpi? i'm pretty sure one of my stock mounts needs to be replaced because everytime i stab the throttle off the line i can feel a big BOOF like i went over a pothole(it wasn't a pothole, i confirmed the sound in a glass smooth parking lot just to make sure). Also, is it possible to install these motor mounts in your garage with some floor jacks? i don't have an engine crane and i like to do things myself instead of having a shop do it. i also would like to put on some hooker longtubes and read somewhere(i think) that polyurethane engine mounts help with clearance. any help is appreciated. thanks in advance.
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Old Jul 1, 2006 | 10:49 PM
  #2  
nelapse's Avatar
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From: Mobile, AL
Car: GTA
Engine: 383 HSR
Transmission: TH-700R4
Axle/Gears: 3.42
they are really all the same... the biggest brand seems to be energy suspension... very inexpensive.. the everyday run of the mill autoparts store sells them over the counter
you need to lift the motor... you can jack the oil pan of you really want, I wouldnt recommend it since its kinda shade tree. You just need to lift one side at a time really, just get creative with a 2x4 and a jack.
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Old Jul 2, 2006 | 07:14 AM
  #3  
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
I used ES poly mounts. IIRC, the OEM clam shell is reused, so a bit of welding will be required.

JamesC
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Old Jul 2, 2006 | 11:43 AM
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From: louisville, ky
Axle/Gears: '01 3.42 10 bolt
i used the energy suspension mounts. work great and no welding.
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Old Jul 2, 2006 | 12:04 PM
  #5  
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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
yea, I think if you line it up right, and bolt the mount to the k-member, then you don't really need to weld it.

I used new rubber mounts, as poly mounts tend to give you more engine vibration, FWIW
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Old Jul 3, 2006 | 10:49 AM
  #6  
pg29's Avatar
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From: Toronto, Canada
Car: 88 GTA
Engine: LS1
Transmission: T56
Axle/Gears: 3.23
great, thanks alot for the info guys.
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