Guest tazbob43 Posted April 10, 2012 Share Posted April 10, 2012 Hi all new here but have a question what engine will interchange in my 5 riveria i was told only an 85 riveria would being its fwd its has a 5.0 ready to haul to junk yard lol thanks Bob Link to comment Share on other sites More sharing options...
DAVES89 Posted April 11, 2012 Share Posted April 11, 2012 I went to Car-Part.com--Used Auto Parts Market and you may want to look there as well. There is a listing of engines and what interchanges. Link to comment Share on other sites More sharing options...
sosuzguy Posted April 11, 2012 Share Posted April 11, 2012 You have been told wrong. An Olds 350 or 403 will fit in your Riv. If you want to get creative you could even put a Buick Turbo 3.8 V6 in there... Link to comment Share on other sites More sharing options...
sosuzguy Posted April 11, 2012 Share Posted April 11, 2012 tazbob43 what exactly is wrong with your Olds 307 in your Riv?There are websites out there that tell you how to get more power out of your 307 Link to comment Share on other sites More sharing options...
Rivieraman Posted April 13, 2012 Share Posted April 13, 2012 JaysonYou and i have the twin sisters to his Riviera Link to comment Share on other sites More sharing options...
Guest tazbob43 Posted April 22, 2012 Share Posted April 22, 2012 I got it hot and either blew the head gasket or cracked the block started to replace the gasket and notice that the water jackets were full of rust so now I'm in process of changing the engine Link to comment Share on other sites More sharing options...
NTX5467 Posted April 22, 2012 Share Posted April 22, 2012 The Olds Toronado and Buick Riviera were "sisters", on the same fwd platform. When fuel economy and emissions regulations tightened, the Olds 307 became the default V-8 and the Buick 3.8L V-6 was the V-6 version.The Olds 403 was a factory option in the Olds Toronados, along about 1979 or so. I'm not sure what might be different in the way of engine mounting lugs on the side of the block between the rwd version and the fwd version. Given the current (and very possibly future) realities, I think that if Olds offered a 350 in the Toronados, as they did the 403, then I'd opt for the 350. It's a very durable engine with the power the 307 was strangled out of AND good highway fuel economy.With ANY engine change, you'll need a new "chip" for the computer (IF it's computerized) and possibly a little different jetting for the carb.One contributing factor to the overheat issue was probably the rust in the water jackets, which restricted coolant flow. The "fix" might be easier than you might suspect, but then again . . .Just some thoughts,NTX5467 Link to comment Share on other sites More sharing options...
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