Re: 1970 LS-7 engine
Pat,
Some really interesting items in that photo…
First is the carburetor/intake manifold arrangement. Obviously a low rise intake with a vacuum secondary carburetor. The fuel line arrangement is the same as a 1971 LS-6… Even has the stamped fuel line support. There is also an operational choke which was never used on an L-88. I found the TCS solenoid location to be interesting as well. I am curious if the solenoid for the LS-6 Chevelles was in the same place. Finally, it looks like this car might be NA-9 equipped… The heat shield for the carburetor is clearly visible.
The radiator is the copper/brass variety, not aluminum (as would be found on a manual transmission L-88). Overflow tank is also copper/brass which was typically reserved for C-60 equipped cars. There is also a fan shroud of the type consistent with a copper/brass radiator.
Fuel and vent line present. Unusual for Holley equipped cars which typically used only a fuel line. The only other Holley equipped Corvette I am aware of that used two lines was the 1971 LS-6.
The alternator bracket appears to be the type used with power steering equipped, big block cars. L-88s were never available with power steering.
The A.I.R. Pump is interesting… The pump with the pressure relief valve was used through most of 1968 across the board. For the 1969 model year, this feature was eliminated except for the L-88/ZL-1. It’s interesting to see that this characteristic carried through to 1970 for the LS-7. A remnant of its initial HD engine ties perhaps?
Ignition shielding distributor box and braided wires. The pilot LS-7 had a radio, no 1967-1969 L-88 (or ZL-1) could be ordered with one. A further indication that this was a street car.
Short dipstick, for what it’s worth.
I edited this post to add one more thing. I just noticed that the wiper door vacuum actuator is the double “pie pan” configuration as opposed to the more common (for 1969) cylindrical version that was used for most of 1969 production. The change occurred about mid October 1969 which works with a late October 1969 build date for the car.
Very good photo, Pat, thanks for posting it!
Regards,
Stan Falenski
Pat,
Some really interesting items in that photo…
First is the carburetor/intake manifold arrangement. Obviously a low rise intake with a vacuum secondary carburetor. The fuel line arrangement is the same as a 1971 LS-6… Even has the stamped fuel line support. There is also an operational choke which was never used on an L-88. I found the TCS solenoid location to be interesting as well. I am curious if the solenoid for the LS-6 Chevelles was in the same place. Finally, it looks like this car might be NA-9 equipped… The heat shield for the carburetor is clearly visible.
The radiator is the copper/brass variety, not aluminum (as would be found on a manual transmission L-88). Overflow tank is also copper/brass which was typically reserved for C-60 equipped cars. There is also a fan shroud of the type consistent with a copper/brass radiator.
Fuel and vent line present. Unusual for Holley equipped cars which typically used only a fuel line. The only other Holley equipped Corvette I am aware of that used two lines was the 1971 LS-6.
The alternator bracket appears to be the type used with power steering equipped, big block cars. L-88s were never available with power steering.
The A.I.R. Pump is interesting… The pump with the pressure relief valve was used through most of 1968 across the board. For the 1969 model year, this feature was eliminated except for the L-88/ZL-1. It’s interesting to see that this characteristic carried through to 1970 for the LS-7. A remnant of its initial HD engine ties perhaps?
Ignition shielding distributor box and braided wires. The pilot LS-7 had a radio, no 1967-1969 L-88 (or ZL-1) could be ordered with one. A further indication that this was a street car.
Short dipstick, for what it’s worth.
I edited this post to add one more thing. I just noticed that the wiper door vacuum actuator is the double “pie pan” configuration as opposed to the more common (for 1969) cylindrical version that was used for most of 1969 production. The change occurred about mid October 1969 which works with a late October 1969 build date for the car.
Very good photo, Pat, thanks for posting it!
Regards,
Stan Falenski
Comment