Here is another version, take your pick.
http://www.stockcarracing.com/thehistoryof/33078_racing_career_marty_robbins/
Bending the Rules
Talladega also played a part in one of the most talked-about Marty Robbins racing stories ever. Ronny says the story has never been told in its entirety, and he wants to set the record straight.
Bobby and Eddie Allison have taken the heat for this years, but it was really Daddys idea all the way, Ronny says. The only thing Ed did was help him get it through tech. I had just gotten out of the service and went to visit him in Bryan, Texas. Im knocking on his motel door and hadnt seen him in a year or so, and its Hey! Come on in. Have I got something to show you!
I follow him over to the sink, and theres a carburetor sitting in it. He says, Take this hammer and knock on these rings. The restrictor rings had a knurlingthey went in one way and wouldnt come out. I hit them and said, Well isnt that what they are supposed to do?
He says excitedly, Yeah! Now take this gasoline and pour a little on them. He had a small squirt bottle, and about 15 seconds later I hear plink, plinkall four of them dropped out.
I said, Why do you want them to do that? He said, Because I want to have some horsepower!
It really was kind of ingenious. He had sanded the knurlings down and glued them in with airplane glue. When they ran through tech, they had a little metal rod with a hook on it that went around the butterfly to measure the bore. So what he did was go out in practice to get the jetting right, and he used a motorcycle spoke to keep the loose restrictors from entering the ports. They just bounced around the bottom of the manifold. He qualified legally at 174 mph; during the race he ran 191. To him it was a harmless prank. The only reason he wanted to do it was to be able to pass guys like Richard Petty and have them scratch their heads. He always intended to tell them about it.
Marty and Ronny told NASCAR they had carburetor trouble and got permission to switch them. Then they pushed the car to the starting line to get it past inspection on race morning. When they fired it, it blew all kinds of black smoke for a few seconds. When it cleared, the car began to roar. David Pearson and Buddy Baker were just running away with the race.
Daddy would run hard a few laps and then back down for a few, Ronny says. Around the middle of the tri-oval, Baker went by him. By the time Buddy was in Turn 1, he had about a 400- to 500-yard lead on Daddy, then all of sudden Daddy got on it, and by turn 3 he was on Buddys bumper.
Another thing was, Daddy had never driven that fast before and has said in several interviews, I wanted to pass the leaders on the front stretch so everyone could see it, but I was not sure if the car would turn at that speed. I thought, If I dont make it, Im going to land on Daytona Beach! Being smart, he backed off.
They wanted him to come to the press booth and give him a Rookie of the Race award. Thats when he said, I cant accept that. It wasnt legal. They wouldnt believe him, cause Daddy was always teasing and cutting up. Some feelings got hurt, and that bothered him. He knew he never had enough money to put into his car to be competitive with the front runners, so it was just his way to find out what it felt like and give his fans a thrill, too.