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3800 SC Motor and Auto Trans Mounts, pre-88 by Mytime
Started on | : 12-07-2024 04:33 PM |
Replies | : 14 (269 views) |
Last post by | : The_auto_dude on 12-19-2024 06:57 PM |
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Dec 7th, 2024
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Mytime Member Posts: 741 From: Long Green,Md Registered: May 2003
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I bought these years ago and never used them. Never even tried to see if they fit. These are all the brackets you need along with new rubber mounts for a 3800/SC & 4T65E swap. The trans brackets are from a Trans Sport Van and the motor mount is from West Coast Fiero. When using the Transport mounts you will need to notch the cradle slightly as these mount the transmission lower than most aftermarket brackets. $200 plus shipping for all of the mounts.
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04:33 PM
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PFF
System Bot
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Dec 8th, 2024
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richard in nc Member Posts: 388 From: charlotte nc Registered: Jun 2023
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you mean 84-87 fiero,not pre 1988 3800?
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05:03 PM
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Dec 9th, 2024
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Mytime Member Posts: 741 From: Long Green,Md Registered: May 2003
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Yes, for a pre-88 Fiero
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08:04 AM
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Dennis LaGrua Member Posts: 15673 From: Hillsborough, NJ U.S.A. Registered: May 2000
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Nice deal but to clarify on this setup; The engine mounts/brackets will fit but the trans brackets will only fit the left side of 4T65eHD up until 2002. The 03--07 4T65eHD transmissions dont have two mounting bosses to bolt on the right side bracket. The WCF bracket picks up on an open hole on the bell housing on the later model years.. ------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE " [This message has been edited by Dennis LaGrua (edited 12-13-2024).]
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03:01 PM
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richard in nc Member Posts: 388 From: charlotte nc Registered: Jun 2023
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| quote | Originally posted by Dennis LaGrua:
Nice deal but to clarify on this setup; The engine mounts/brackets will fit but the trans brackets will only fit the left side of 4T65eHD up until 2002. The 03--07 4T65eHD transmissions dont have two mounting bosses to bolt on that side bracket. The WCF bracket picks up on an open hole on the bell housing.
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would this work with a 1989 3800 and 4t60?
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08:12 PM
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Dec 10th, 2024
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Dennis LaGrua Member Posts: 15673 From: Hillsborough, NJ U.S.A. Registered: May 2000
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| quote | Originally posted by richard in nc:
would this work with a 1989 3800 and 4t60? |
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The 1989 3800 was a series 1 design. The supercharged version only made 205 HP. Not sure if the mounts shown here would work on the series 1 engine but that engine would be over 35 years old, and IMO not the best swap. ------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
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04:50 AM
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richard in nc Member Posts: 388 From: charlotte nc Registered: Jun 2023
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i only concider it because i already have a wrecked car with it in it.
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01:19 PM
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Dec 11th, 2024
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The_auto_dude Junior Member Posts: 3 From: WI Registered: Nov 2023
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I'm interested. I have a 2002 GTP motor trans and 86 gt so it should work. How do these mounts hold up on stock power and if one goes are replacements available? Is there a dog bone mount that works or will i have to fab one? Thanks
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08:38 AM
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Dec 13th, 2024
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Dennis LaGrua Member Posts: 15673 From: Hillsborough, NJ U.S.A. Registered: May 2000
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| quote | Originally posted by The_auto_dude:
I'm interested. I have a 2002 GTP motor trans and 86 gt so it should work. How do these mounts hold up on stock power and if one goes are replacements available? Is there a dog bone mount that works or will i have to fab one? Thanks |
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I would suggest a dog bone mount or even two on the 3800SC install.  This how the the first swap install looked after completion. Later on the WCF dog bone mount was added to the transmission side and Fierorog s tensioner bracket with dog bone mount was added to the stock side. We've used two dog bone mounts on all the swaps since. . The grand Prix 3800's has two mounts so why not the Fiero . ------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE " [This message has been edited by Dennis LaGrua (edited 12-13-2024).]
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03:41 AM
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Mytime Member Posts: 741 From: Long Green,Md Registered: May 2003
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Since I never installed these, thank you Dennis for the input.
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08:39 AM
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richard in nc Member Posts: 388 From: charlotte nc Registered: Jun 2023
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| quote | Originally posted by Dennis LaGrua:
I would suggest a dog bone mount or even two on the 3800SC install.

This how the the first swap install looked after completion. Later on the WCF dog bone mount was added to the transmission side and Fierorog s tensioner bracket with dog bone mount was added to the stock side. We've used two dog bone mounts on all the swaps since. . The grand Prix 3800's has two mounts so why not the Fiero . |
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i always wondered about that.theres 400 hp caddys out there with just two mounts.im not saying you are wrong.
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07:16 PM
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PFF
System Bot
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Dec 14th, 2024
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The_auto_dude Junior Member Posts: 3 From: WI Registered: Nov 2023
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PM inbound.
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09:15 PM
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Dec 15th, 2024
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Mytime Member Posts: 741 From: Long Green,Md Registered: May 2003
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And replied.
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09:19 AM
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Dec 16th, 2024
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Mytime Member Posts: 741 From: Long Green,Md Registered: May 2003
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Sold. Thank you
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12:07 PM
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Dec 19th, 2024
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The_auto_dude Junior Member Posts: 3 From: WI Registered: Nov 2023
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Mytime shipped the mounts super fast and I received exactly what was pictured. Thanks man.
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06:57 PM
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