1975 LeSabre 455 & exhaust options
 

Hi, got a question about my recently acquired 1975 LeSabre.

Mine has the 455/4 option. The strange thing is that it has factory fitted dual exhausts. Those weren't available in 1975 officially according to Buick, the brochures and the interwebs. 1974 did have that option.
1975 had a catalytic converter. Mine does not.

It was bought new by a gentleman in Canada. It was built in Fairfax KS.

Is it possible the original owner asked the dealer to fit the car with the exhaust system of the 1974 LeSabre? (1974 had dualexhaust options for 350/2, 350/4, 455/2 and 455/4 and stage1 455).

Also I read in the 1974 brochure that the 455 came in 3 flavours (first two with option for dual exhaust): 2 barrel 175/190hp, 4 barrel 205/230hp and 4 barrel stage 1 with 'electronic high-energie ignition' 245hp.

Is the 'electronic high-energie ignition' the only difference in the Stage 1 Vs normal 4 bbl?

And if so, given the fact that for 1975 that 'electronic high-energie ignition' was standardised and my car having dual exhaust, would that mean my car has 245 hp? Or just 230?

Hope someone can help me with this mystery.

https://cimg4.ibsrv.net/gimg/www.bui...1cda87d7f8.jpg
My engine bay

Nice shape , well kept.

Does yours have HEI system, can't tell radiator hose in the way?

https://cimg9.ibsrv.net/gimg/www.bui...2212da64c8.jpg
https://cimg2.ibsrv.net/gimg/www.bui...753e9aae0c.jpg
Took a better picture of it for you. This is it.