pulpcowboy
9/11/2007 3:48:32 PM
Can anyone tell me if a 72 Z 28 could have a CLB block (396) from the factory or was the SS models the only ones with a 396?
riceeater
9/11/2007 5:47:51 PM
z28 were LT1 small block 350s only, a z was never a big block car
1990CamaroRS
10/4/2007 8:56:56 PM
sorry to say this rice, but the LT1 is only in the 4th gens, not the 2nd gens
riceeater
10/5/2007 7:10:51 AM
sorry to point this out but you are wrong, LT1 was originally a designation for a high-performance, fully forged, solid lifter race motor designed for the trans-am racing series and detuned for the street, it carried 11:1 compression in 1970, 9:1 in 71 72, and i think 73, it was also the highest performing small block in corvettes, it was rated at370 hp in corvettes, and 360 in maros, then 330 when the compression change took place. the LT1 name was used on new gen 2 small blocks as an homage to the original, just as the LS series looks back to the original LS big block series in the late 60s early 70s. ALL Z28s from 70 to 73 had this motor, as well as either a Hydramatic 400 or M21/22 4 speed. All were either geared 3.73 or 4.10 from factory, and all were ac delete until the 73 model year
mickey_bigdaddy
12/2/2007 7:25:17 PM
quote:
ORIGINAL: riceeater
sorry to point this out but you are wrong, LT1 was originally a designation for a high-performance, fully forged, solid lifter race motor designed for the trans-am racing series and detuned for the street, it carried 11:1 compression in 1970, 9:1 in 71 72, and i think 73, it was also the highest performing small block in corvettes, it was rated at370 hp in corvettes, and 360 in maros, then 330 when the compression change took place. the LT1 name was used on new gen 2 small blocks as an homage to the original, just as the LS series looks back to the original LS big block series in the late 60s early 70s. ALL Z28s from 70 to 73 had this motor, as well as either a Hydramatic 400 or M21/22 4 speed. All were either geared 3.73 or 4.10 from factory, and all were ac delete until the 73 model year
riceeater,
i'm thinking about buying a 1978 Z28 without a motor and tranny. What is the best option for a new drivetrain for this car? I don't want to go with the '78 Z28 350, seems it was weak on hp.
riceeater
12/5/2007 11:22:18 AM
quote:
ORIGINAL: mickey_bigdaddy
quote:
ORIGINAL: riceeater
sorry to point this out but you are wrong, LT1 was originally a designation for a high-performance, fully forged, solid lifter race motor designed for the trans-am racing series and detuned for the street, it carried 11:1 compression in 1970, 9:1 in 71 72, and i think 73, it was also the highest performing small block in corvettes, it was rated at370 hp in corvettes, and 360 in maros, then 330 when the compression change took place. the LT1 name was used on new gen 2 small blocks as an homage to the original, just as the LS series looks back to the original LS big block series in the late 60s early 70s. ALL Z28s from 70 to 73 had this motor, as well as either a Hydramatic 400 or M21/22 4 speed. All were either geared 3.73 or 4.10 from factory, and all were ac delete until the 73 model year
riceeater,
i'm thinking about buying a 1978 Z28 without a motor and tranny. What is the best option for a new drivetrain for this car? I don't want to go with the '78 Z28 350, seems it was weak on hp.
In 1978, the entire lineup was weak on power, so your best bet is to find a car without the original drivetrain. A small-block, built of course, through an automatic into a 3.55 posi rear would be fun, as would swapping a 5-speed in. For all original, a Z is about the best you can do, but the 350 was not doing well at that point in its history
