a friend of mine in cobourg has told me he wants to sell his 75 grand am,its a 455 with a 12 bolt rear,texas car.last i saw it ,it was black and need a repaint due to the texas sun.he told me he wants $4500it would be a sweet car for someone.
Seriously though, what are the details on this car? Does the A/C work? What is the interior like? Mileage? Engine strong? Need anything to be certified?
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Hillar
1970 LS4 (eventually an LS5) Laurentian 2dr hdtp -and a bunch of other muscle cars...
Just a point of trivia, even in a 73 GTO, 4 speed was never offered with the 455 in these vintage A bodies.
You beat me to the punch, I was just going to post that. In fact, there was only one year in which you could order the standard "D" port head 455 with a stick, that was 1970. From 71 onwards, it was only the 400 or the 455 HO motors with the round port heads that could be ordered with manual transmissions. My thought is that the regular 455, which was essentially a stroked 400 with longer rods, was not designed or appropriate for the high revving and rpms that stick cars usually experience. The regular 455 really is a torque monster suited to an automatic transmission and that is why they were never really rated with much more horsepower than a 400. In 71-72 they were essentially rated at the same horsepower, but at a lower rpm, and with much more torque. I'm also guessing that Pontiac received an inordinate number of warranty claims for the 455 stick combos (given the number which was produced which was low) so they just decided that going forward, if someone was interested in stick performance they would order the HO motor anyway which was properly equipped to rev higher.
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Hillar
1970 LS4 (eventually an LS5) Laurentian 2dr hdtp -and a bunch of other muscle cars...
Just a point of trivia, even in a 73 GTO, 4 speed was never offered with the 455 in these vintage A bodies.
You beat me to the punch, I was just going to post that. In fact, there was only one year in which you could order the standard "D" port head 455 with a stick, that was 1970. From 71 onwards, it was only the 400 or the 455 HO motors with the round port heads that could be ordered with manual transmissions. My thought is that the regular 455, which was essentially a stroked 400 with longer rods, was not designed or appropriate for the high revving and rpms that stick cars usually experience. The regular 455 really is a torque monster suited to an automatic transmission and that is why they were never really rated with much more horsepower than a 400. In 71-72 they were essentially rated at the same horsepower, but at a lower rpm, and with much more torque. I'm also guessing that Pontiac received an inordinate number of warranty claims for the 455 stick combos (given the number which was produced which was low) so they just decided that going forward, if someone was interested in stick performance they would order the HO motor anyway which was properly equipped to rev higher.
Just to clarify, you are talking A body only here, right? The F body still had it available starting in 73 I think it was.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
Just a point of trivia, even in a 73 GTO, 4 speed was never offered with the 455 in these vintage A bodies.
You beat me to the punch, I was just going to post that. In fact, there was only one year in which you could order the standard "D" port head 455 with a stick, that was 1970. From 71 onwards, it was only the 400 or the 455 HO motors with the round port heads that could be ordered with manual transmissions. My thought is that the regular 455, which was essentially a stroked 400 with longer rods, was not designed or appropriate for the high revving and rpms that stick cars usually experience. The regular 455 really is a torque monster suited to an automatic transmission and that is why they were never really rated with much more horsepower than a 400. In 71-72 they were essentially rated at the same horsepower, but at a lower rpm, and with much more torque. I'm also guessing that Pontiac received an inordinate number of warranty claims for the 455 stick combos (given the number which was produced which was low) so they just decided that going forward, if someone was interested in stick performance they would order the HO motor anyway which was properly equipped to rev higher.
Just to clarify, you are talking A body only here, right? The F body still had it available starting in 73 I think it was.
Just to add, in the middle of the 1974 model year, Pontiac discontinued the availability of all 455s in the Firebird. Half way through the 1975 model year, they brought back the D port 455 only; the SD was gone forever especially after Pontiac's hanky-panky with it's emissions set-up. Not many were sold and 1976 was last year the 455 was offered in the Firebird.
__________________
Hillar
1970 LS4 (eventually an LS5) Laurentian 2dr hdtp -and a bunch of other muscle cars...
