Engines
The 455-4 with a Rochester Quadrajet carb. is the regular engine. A Riviera GS has a hotter cam so there is just a bit more hp available.
Other engines on this site:
(more pictures and close ups)
*
These dinos have a great 455 under the hood....
Some larger pictures are shown below!
<- click on the pic on the left to see more of this beauty
That's what a 1971 Riviera GS looks like
Mike Virants build-up  CLICK to see more
This is a rebuild 455 in a 1971 Riviera.
1971 GS (chrome air filter top)
1972 455-4
dusty 72
Yes there is an engine and its a 1971 455-4
71 with a 72 air filter (small snorkel)
71 with 72 air filter (small snorkel)
71
a restored 73 engine
71 GS 455-4 (very nice detailled)