The original had a hole in the block the spare engine that came with the car is still a series 10 engine. it is in the franklin register. It runs great have not had out on the road really just around the yard Thanks I hope some one will pick up. Thanks again.
Alot of cars had them you put the peddle down and it would "dump" the exhaust . it was befor the muffle. Some would use it for noise and some for compression release. I did not know if each car manufacturer had their own or if you could buy them off the shelf. I have 5 or 6 and was going to sell them but, want to keep 1 for my studebaker mine are all different Thanks