1984 Riviera 403 swap

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truracer20

Master Mechanic
Feb 16, 2014
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All of the 307 parts should bolt right onto the 403, the exhaust manifolds won't be ideal though. I wonder if older Toronado manifolds would work?
 

G-Body_Vet

Comic Book Super Hero
Oct 15, 2010
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Yeah I've worked on quite a few Olds before, just not this particult setup. This is just a quick motor swap so I'm not going out of my way to make it anything extraordinary.
 

G-Body_Vet

Comic Book Super Hero
Oct 15, 2010
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I finally yanked that 307. It's kind of an odd setup but pretty easy to work on. The motor mounts are attached to a cradle that wraps around the front of oil pan, and the cradle attaches to the engine where mount would normally bolt on. I also inclued a pic of a fwd Olds pan vs rwd.
20150604_191134.jpg
20150604_191108.jpg
 
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liquidh8

Comic Book Super Hero
Nice, get it running now already!
 
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G-Body_Vet

Comic Book Super Hero
Oct 15, 2010
2,937
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I wanted to have it back in the car this weekend but the pump screen wasn't reusable, nor was the fwd flexplate so I had to order more parts. One good thing about this Riviera is that most of the parts were closeouts and dirt cheap!
 
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liquidh8

Comic Book Super Hero
Rockauto closeouts! Love it.
 

foxtrot

Royal Smart Person
Dec 19, 2008
1,489
590
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Awesome project!

I was looking at the picture in your post above of the two oil pans. I instantly recognized th SBO pan on the right but have never seen the olds pan that is on the left side of the pic. Was that pan specific to the Olds powered Riviera only?
 

foxtrot

Royal Smart Person
Dec 19, 2008
1,489
590
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The Riviera Olds pan also looks like it has less volume too! Really nice car by the way.
 
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