Still Out There: This Disassembled 1969/70 ZL1 427 Aluminum Big Block Is A Chevy Performance Treasure Trove

Still Out There: This Disassembled 1969/70 ZL1 427 Aluminum Big Block Is A Chevy Performance Treasure Trove

With the 50th anniversary of the NHRA pro stock class (and 51st of the AHRA version) coming up next month, it’s kind of neat to find some parts that would have been at the top of the wish list for any Chevy drag racer in that 1969/1970 window. Guys like Grumpy Jenkins used the Chevy ZL1 aluminum big block for their power plant of choice early in the pro stock wars before he got all small block obsessed and while these engines were found in a very, very small number of “production” cars, they really shined on the race tracks of America.

What you see here is a nearly complete, albeit disassembled counter replacement ZL1 engine. This was not taken out of a car, but rather it was ordered and bought by someone through a dealer, perhaps to go racing with, perhaps to put in a hot street car, but surely not to sit and collect dust for 50 years but that is what it did. The block has never been used and neither seemingly has any other part of it. The package for sale here is the block, crank, cylinder heads, pistons, rods, and intake manifold. It’s huge money and it probably should be because there are few of these things left on Earth in this condition, that we car say with certainty.

We’re guessing this thing will end up being sold to someone building a clone ZL1 car and while that is cool we’d so much rather see it go to someone who was building a period perfect early pro stocker. If not a copy of Grumpy’s first pro stock race winning Camaro something similar where a four speed and huge RPM would make people’s eyes light up and their hearts sing.

Old parts like this speak to us because every single day they seem to drift a little further into obscurity, with every daily breeze of automotive news the sands of time blow a little heavier over this stuff and we kind of hate that. In an era where electrical prowess is outstripping that of internal combustion, we celebrate the carnivorous, meat eating, factory racing efforts of the 1960s and early 1970s and the spirit that they embody.

C’amon, we know someone out there is building a vintage period pro stocker that wants to power it right!

Zl1 in pieces: Here’s an amazing opportunity to score a near complete ZL1 engine

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10 thoughts on “Still Out There: This Disassembled 1969/70 ZL1 427 Aluminum Big Block Is A Chevy Performance Treasure Trove

  1. Michael Proulx

    That is unbelievable, this is one of the baddest engines to ever come out of Detroit. A truly amazing find, thanks for sharing.

  2. Mike

    Here\’s one of those things I\’d actually consider trading a body part for, lol!!
    I\’m into Fords and Chryslers more than anything now, but this beast would be in a \’70 Z28 clone in a split second!!

  3. Bryan

    I have a rare 67 Carolina Blue 67 Chevelle SS 396. I am restoring it with as much GM NOS parts as possible. That would be a great engine to put in that car since the 396 and 400 automatic is missing. Thanks for showing the ad.

  4. C.M. Bendig

    Ya’ll forget they sold More of those for Racing use then they ever put in cars. In 1974 or 75 Yenko bought the rights to the ZL1 block from GM and had Yenko added to the castings. A lot of people forget in 1970 GM had a parts counter only LS7 454.

  5. Craig Brown. Henderson NV

    Don’t comment if you do not know . Fastest production car was 69 Nova ,COPO. , It was 400 lbs lighter than the camaro ,435 stated HP, but 504hp by Chevy. Out ran the Yenkos , all he did was de *hp the 427 and put lipstick on the body. My Nova , slicks on runs 10.8 T 130 mph. Only 11 of app 35 still here. Clones suck. No one wants to drive a quarter million dollar ride around. Small chambered , large rectangled ports , big valved , high compression aluminum headed, solid cam and 4spd. 110 octane makes passenger land in back seat.


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