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cadillac in iroc

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Old Jul 25, 2008 | 12:04 AM
  #1  
oldeman's Avatar
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From: MS.
Car: 1986 iroc z28
Engine: 305 ci.tpi
Transmission: 700r4
Axle/Gears: 3:23 posi.
cadillac in iroc

I have a 1986 iroc that i would like to swap in a 472ci. cadillac,turbo 400 short tail,searched board could not find any information on this type of swap.I know it would be a drop in to do a 350/383/400 sb but i don't have one so I gotta use what I got,any information would be appreciated.
Thanx Guys.

Oldeman
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Old Jul 25, 2008 | 07:12 AM
  #2  
doc221978's Avatar
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Joined: Oct 2006
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From: Allenhurst, GA
Car: '81 Z-28
Engine: Soon to be a 383
Transmission: Muncie
Axle/Gears: 3.42
Re: cadillac in iroc

There was a guy in fort benning that had done that.... he used a kit to put in the 400 trans (torque arm hook-up). The front had a tubular k-member, and custom motor mounts (steel plates, bent and drilled). He did all the wiring himself, but that's easy with the manual. Custom headers and boneyard radiator finished off the main components. I wish I could remember more. It would carry the front tires when he got done.
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Old Jul 25, 2008 | 08:14 AM
  #3  
AlkyIROC's Avatar
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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: cadillac in iroc

472 or 500 Caddy swap is no different than any other foreign engine swap such a Pontiac, Olds, Buick. It will fit however a lot of custom work will need to be done. Since you already have the matching transmission, that makes it easier.
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Old Jul 25, 2008 | 12:55 PM
  #4  
bjankuski's Avatar
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Joined: Jun 2000
Posts: 599
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From: Glenbeulah, WI
Car: 1988 Firbird
Engine: 406
Transmission: T-56
Axle/Gears: 4.10
Re: cadillac in iroc

This will be a lot of work, it would be easier to sell the cadilac parts and buy a SBC to swap in.
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Old Jul 26, 2008 | 08:52 PM
  #5  
oldeman's Avatar
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Joined: May 2007
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From: MS.
Car: 1986 iroc z28
Engine: 305 ci.tpi
Transmission: 700r4
Axle/Gears: 3:23 posi.
Re: cadillac in iroc

I think to carry the front wheels for me would be nice but I know it would take a lot more green than I could come up with.I also know that I could make it easy on myself by swaping in a small block,but I want something a bit different every where you look there sits a SBC,best bang for the buck I know,but sick of looking at em.Thanx guys for all your time and wisdom

Oldeman
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Old Jul 27, 2008 | 12:12 AM
  #6  
QwkTrip's Avatar
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Car: '89 Firebird
Engine: 7.0L
Transmission: T56
Re: cadillac in iroc

If you want something different that's fine. Personally, I've never spent any time explaining to somebody why they were looking at my tail lights. If I can save money doing something tried and true then I will.
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Old Jul 27, 2008 | 11:37 AM
  #7  
//<86TA>\\'s Avatar
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Joined: Aug 2006
Posts: 12,802
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From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: cadillac in iroc

Originally Posted by oldeman
I think to carry the front wheels for me would be nice but I know it would take a lot more green than I could come up with.I also know that I could make it easy on myself by swaping in a small block,but I want something a bit different every where you look there sits a SBC,best bang for the buck I know,but sick of looking at em.Thanx guys for all your time and wisdom

Oldeman
then go with a BBC, or a ltx/lsx
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Old Jul 28, 2008 | 12:49 PM
  #8  
Project: 85 2.8 bird's Avatar
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Joined: Jul 2001
Posts: 4,461
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From: BFE, MD
Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
Re: cadillac in iroc

may be heresy, but get an ecotech, mod it for up to 1000hp (gm may still have the guide available), get a tranny & rear that will hold it, and have fun.

back to topic...... there was a thread a while back onsomeone who was doing this, even cut the firewall to sit the engien back some to offset the weisght ditrbobution. I tried searching for it a while ago but couldn't find it.
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Old Jul 28, 2008 | 06:20 PM
  #9  
oldeman's Avatar
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Joined: May 2007
Posts: 6
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From: MS.
Car: 1986 iroc z28
Engine: 305 ci.tpi
Transmission: 700r4
Axle/Gears: 3:23 posi.
Re: cadillac in iroc

Could probably have a lot more options were it not for budget constraint.Sooo, I have to use and make the best of what I got.

Thanx Again Guys

Oldeman
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Old Jul 28, 2008 | 08:38 PM
  #10  
ls six's Avatar
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Joined: Apr 2008
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Re: cadillac in iroc

The cadillacs are about the same weight as the SBC and lighter than a BBC.

The big limiter is the valve train. It redlines around 4K and the entire valve train needs to be changed before it'll live at 6+ thousand.
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Old Jul 28, 2008 | 08:46 PM
  #11  
AlkyIROC's Avatar
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25 Year Member
 
Joined: Jul 1999
Posts: 17,262
Likes: 168
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: cadillac in iroc

Here's your source for performance caddy parts

http://www.cad500parts.com/
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Old Jul 29, 2008 | 06:04 PM
  #12  
Irockz's Avatar
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Posts: 696
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From: Springfield,Mo
Car: 87 Berlinetta,work in progress
Engine: 468 BB,still in the build process
Transmission: TH350,3500 stall
Axle/Gears: 9" Ford,learning how to live under
Re: cadillac in iroc

I think this would be a killer swap,as long as someone has the time and fabrication skills to make it happen.Fabbing stuff up is cheap as long as you possess the skills and equipment to make it happen.Granted,the big Caddys are spent at 4000 rpm,that just means longer engine life,and if you making 500 lb. feet of torque at that RPM,then there's not much need to twist it hard.I say if your not afraid of the work and have the skills needed to make it happen,go for it!It may be nonconventional,and you'll get friction for it,but I bet with some chassis mods it would be a hoot!
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