ZL-1 block versus Can-Am block?

[rcalzaretta62]

I have the Reynolds Aluminum Block that came from Grumpy's Toy IV that won the 1970 Winternationals and documentation/pictures from the Peterson Archive with this exact engine in the car. It is a 0-326711 block and what Bill was running at the time. I heard Bill didn't like the ZL-1 block and had something to do with heat transfer causing them to lose power as the day went on. I have been in contact with the current owners of Grumpy's Toy IV to see if they are interested in it before I put in my car. I would post some pictures, just not sure how to add them.

[RALLY]

Originally Posted by rcalzaretta62

I have the Reynolds Aluminum Block that came from Grumpy's Toy IV that won the 1970 Winternationals and documentation/pictures from the Peterson Archive with this exact engine in the car. It is a 0-326711 block and what Bill was running at the time. I heard Bill didn't like the ZL-1 block and had something to do with heat transfer causing them to lose power as the day went on. I have been in contact with the current owners of Grumpy's Toy IV to see if they are interested in it before I put in my car. I would post some pictures, just not sure how to add them.

That is awesome you have that Reynolds Aluminum block. Agree Bill Jenkins has said he didnt like those ZL-1 Blocks because of bad core shift and the cylinder seal had bad blow by causing bad ring seal resulting in power loss. That is cool you are contacting the current owners if they are interested in that Reynolds block. Great story. Good luck and like hearing these stories.