ZL-1 Block Marking Help

[SuperNovaSS]

Thanks for the replies guys. It could be a Yenko block but I also had a winter's block years ago that had large bores just like this one. It is a bummer about the snowflake because the block is cherry otherwise. It was assembled as a shortblock when I got it. I believe the 4.5
inch bore amd 4 inch stroke makes this a 510. It has nice Ross pistons, a 3521(LS7) 454 crank that had been internally balanced, a Summers Bros timing cover with a cam access hole, and Isky roller cam.

The story goes that it was in a 70 el camino that the owner hoped to run 10's in. The camino was setup safety wise as a 10 second car and broke into the 9's on the first run. The track asked the owner to go home. The engine was pulled and a smaller engine was put in the camino. This engine was either sold or given to the current owner who was a good friend when the past owner past away.


Jason

[iluv69s]

my belief that it is yenko block is because of the markings, nothing to do with the bore size.

as far as the snowflake missing, that's no big deal. My original block from my ZL-1 had the same thing. Early in lfe it was separated from my car and then eventually ended up in a circle track car. It had the snowflake ground off and was painted all orange so the competitors would not know any better !!! The goood news is JM restored the motor and he also restore teh snowflake. His website has a pic of my block. Fortunately, aluminum can be fixed.

I'll take it off your hands if the missing snowflake bothers you too much !! Cool Piece !!!

Better yet, YOU SHOULD BUILD SOMETHING OUT OF IT !!

[Bryan Matthews]

I know this is an old thread but I just found it and wanted to add some information.

Back in the very late 1970's and early 1980's my stepfather raced at Terminal Island/Brotherhood, Orange County International Raceway OCIR and at Pomona. He met and teamed up with Vince "Jumbo" Zamora. Jumbo drove a Red El Camino. I believe it was a 1970. I seem to remember it having a custom weight shifting mechanism in the bed.

I don't know the details but apparently some shady business dealings occurred and Jumbo cheated or stole from my stepfather. Not sure if it was in the form of money or engines or parts.

I now own the car my stepfather raced. It was an all steel full body 1929 model A Ford called "My Mistress". I'm attaching a photo of it in case anyone has interest in the history associated with this story.

I know that doesn't have anything to do with your engine but I wanted to shed some history on Jumbo's Racing Engines in Torrance, CA.