Re: Ram Horn Exhaust Manifolds
I would look for the 2 1/2" parts, in fact there are some on e-bay right now and close to my Toronto home as well. GM Performance Division still offers the Corvette Ram Horns at 2 1/2" through the dealers, although I'd hate to see the price.
As for my car it is a 1973 Pontiac LeMans GT. GM Canada says one of 3,761 built. I know, this is for Chevelles! You see in Canada GM built Pontiacs along side Chevrolets so pretty much all Canadian Pontiacs built between 1955 and 1977 run Chevrolet chassis and drive trains. Our Pontiacs were named differently as well. In 1961 you had the Laurentien with the 348 triple carb set up and then the 1964 & 65 Parisienne Custom Sport was a hot performer with the 409 dual quads, then later from 67 on the 2+2 with the 396, 427 and 454 up to 1970. Our midsized Pontiac was the Beaumont from 1964 to 1969, SD cars - Super Deluxe, look like Chevelle SS's on the outside with Pontiac grilles and trim and totally GTO interiors. Engines were 283 up to 396 depending on year.
Small blocks were know as Pontiac "Astro-Flash" and big blocks as "Astro-Jet". Notice any similarities to Chevy "Turbo-Fire" and "Turbo-Jet". There was even a 396 called "Econo-Jet" a 2bbl version.
My car looks like a 73 GTO on the outside but mechanically it is 1973 Chevelle. Mine is a 350 with a TH 350 trans. It has bucket seats and no console with a column shift! I like to keep it looking stock and try to use GM NOS or good used parts when I can. The engine has a ZZ4 Bowtie aluminum intake, Edelbrock #1406 - 600 cfm replacement carb all exiting through duals. I use a pair of 90's Bonneville SE mufflers, the ones everybody complains are too loud on the Bonnie, which have good flow and a nice deep tone. This is no drag strip car but it moves out smartly and sounds good doing it. It is a weekend cruiser that the whole family enjoys that maybe gets 1,000 miles per year. I am having trouble with the passenger side exhaust manifold leaking hence my question. Might as well try and upgrade when a repair is needed.
Thanks again, Ray