Big Block or small block
Burning Brakes
Joined: Jan 2010
Posts: 967
Likes: 109
From: Europe, Germany
Just check this page and you will know ;-)
http://www.corvetteactioncenter.com/...70/70prod.html
Regards
Roma
http://www.corvetteactioncenter.com/...70/70prod.html
Regards
Roma
Race Director
Joined: Oct 2000
Posts: 12,698
Likes: 3,153
From: Shamong, NJ
You can't tell from the VIN on a 70, 72 was the first year the VIN included a designation to indicate the engine.
Most of the features unique to big blocks were bolt on (rear sway bar, 7 leaf rear spring, etc.) so they're easily changed. If it's an automatic (and still has the original trans), the indicator code on the trans would be an "S" with a 454 and a "K" for a small block automatic. Original rears have a 3 letter identification code stamped on the rear, and the codes are different for big block and small block rears. Unfortunetly, the machined pad it's stamped on is pretty hard to see with the rear in the car. Big block rears also used cast retainer caps on the half shaft universals at the side yokes. Small block universals use a strap type u-bolt. Big blocks used a copper radiator (26" wide) with tanks and a fill cap. AC and automatic small blocks use a slightly smaller copper radiator (25" wide), manual trans 70s use an aluminum radiator (18" wide) with an expansion tank.
Most of the features unique to big blocks were bolt on (rear sway bar, 7 leaf rear spring, etc.) so they're easily changed. If it's an automatic (and still has the original trans), the indicator code on the trans would be an "S" with a 454 and a "K" for a small block automatic. Original rears have a 3 letter identification code stamped on the rear, and the codes are different for big block and small block rears. Unfortunetly, the machined pad it's stamped on is pretty hard to see with the rear in the car. Big block rears also used cast retainer caps on the half shaft universals at the side yokes. Small block universals use a strap type u-bolt. Big blocks used a copper radiator (26" wide) with tanks and a fill cap. AC and automatic small blocks use a slightly smaller copper radiator (25" wide), manual trans 70s use an aluminum radiator (18" wide) with an expansion tank.
Last edited by gbvette62; Mar 31, 2010 at 05:53 PM.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Burning Brakes
Joined: Feb 2004
Posts: 924
Likes: 2
From: Kearneysville West Virginia
You can't tell from the VIN on a 70, 72 was the first year the VIN included a designation to indicate the engine.
Big blocks used a copper radiator (26" wide) with tanks and a fill cap. AC and automatic small blocks use a slightly smaller copper radiator (25" wide), manual trans 70s use an aluminum radiator (18" wide) with an expansion tank.
Big blocks used a copper radiator (26" wide) with tanks and a fill cap. AC and automatic small blocks use a slightly smaller copper radiator (25" wide), manual trans 70s use an aluminum radiator (18" wide) with an expansion tank.
Le Mans Master
Joined: Jan 2007
Posts: 5,485
Likes: 7
From: Peekskill NY
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