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Old 09-12-2022, 04:27 PM
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Default 1963 Z11 Impala Race Bred

These cars although RPO's, were purpose built for strictly racing. Non essential items were not available to reduce weight such as; radio, heater, sound-deadner.

This package was quite potent especially when Frank Sanders was behind the wheel, winning 19 of 20 races he entered in 1963.

Today it is owned by Roger Sortino a fantastic caretaker!

Here are a few HD components:

Aluminum components:
  • hood
  • fenders
  • bumpers

Engine-427:
  • stroker crankshaft
  • compression (13.5:1)
  • heads with larger ports
  • dual four-barrel carbs
  • 427 cubic inches-430 horsepower.


https://www.chevyhardcore.com/featur...e-of-its-kind/
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Old 09-12-2022, 11:53 PM
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thanks Steve - what a thumper. What trans did Chevy use in ‘63 to handle the torque of this 427?
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Old 09-13-2022, 01:00 AM
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Originally Posted by mockingbird812 View Post
thanks Steve - what a thumper. What trans did Chevy use in ‘63 to handle the torque of this 427?
4 Speed Manual Close Ratio
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Old 09-13-2022, 01:03 AM
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Quote:
Perhaps the 427’s greatest improvement over the 409 was in the cylinder heads and intake manifold. Like the high-performance versions of the 409, the 427 used 2.19-inch intake and 1.72-inch exhaust valves, but the 427’s head castings were taller. This allowed the ports to be located higher for a straighter path from the intake into the combustion chamber. The dual-carburetor aluminum intake manifold was unique, too, and made in two pieces: the lower part served as the lifter valley cover and contained the water jackets, while the upper portion housed the raised intake runners. A pair of Carter AFBs topped the intake and drew air through a special cowl-induction inlet that fed the air cleaner.

Chevrolet reportedly made 57 Z-11s before GM pulled the plug on all of its racing programs. The 427 represents the pinnacle of W engine performance development and is legendary among enthusiasts of the breed today.

Last edited by Lee Stewart; 09-13-2022 at 01:05 AM.
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Old 09-13-2022, 01:14 AM
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430 Horsepower?

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Old 09-13-2022, 01:24 AM
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I Sure wish Verne was with us RIP. He'd give us a history lesson on these W engines that we wouldn't forget!
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Old 09-13-2022, 03:24 AM
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----When real production cars were in their heyday. A period I will never forget as I lived thru it, and loved every minute of it!!!.....Bill S
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Old 09-13-2022, 05:01 PM
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Quote:
Originally Posted by Steve Shauger View Post
I Sure wish Verne was with us RIP. He'd give us a history lesson on these W engines that we wouldn't forget!

What a true statement!
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Old 09-13-2022, 06:38 PM
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Per Colvin’s 60-64 “By the Numbers” chapter on the Z-11, they were all built with close ratio Borg Warner T10 with Inland shifters. It makes sense, as the first Muncie 4 speeds didn’t initially ship to production until February 6th, 1963. (Shipped to Baltimore plant to be put into full size Chevrolets, NOT Corvettes-The earliest Corvettes to get Muncies are built in the May/June 1963 timeframe)

I don’t think Mr. Sortino owns the Sanders car any longer. I appraised it around 2010 here in WA and then the next time I saw it was in the Mecum display at MCACN a few years later. I do have to say, its probably my favorite Z11 after seeing it in all of its unique aqua/aqua original glory.
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Last edited by tom406; 09-13-2022 at 06:55 PM.
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Old 09-14-2022, 12:10 AM
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Hey! There's my 'ol red hot-rod in the background...MCACN 2017
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