Hey folks. I am new to the form and have spent the last few days researching and trying to answer a transmission question with ne luck. I am working on a 1967 Firebird 400 4 speed car. The transmission was missing so I am in the process of finding a replacement. It was orginally a M20 wide ratio. The confusion is what side does the speedometer cable attatch to. The earily generation Camaro's were on the passenger side however my transmission shop tell me that Pontiac's were on the drivers side. The few pics I can find on the internet I have seen both under Firebirds. Can anyone tell me the correct side for a 67?
Well, I don't know about that. My orig trans was swapped out before I got the car so I can't say what was put in but I can't imagine someone going to all the trouble to install the wrong replacement in the early 70s when they were so easy to get. And then having to change the speedo cable to a longer one to reach all the way to the other side. It really seems like the speedo cable would get in the way of the shifting assembly on the drvr side. I have the fresh built M20 sitting on the shelf in the garage. I'll get the number off the tail housing. Maybe I can cross ref to see what the app was. Maybe it was the Sag boxes that had the speedo on the drvr side?
I have a 69 Firebird with original Muncie 4 speed. Tailshaft cating number is 3857584 and the speedo connection is on the passenger side. Here is a quote from the following site-http://www.hemmings.com/mus/stories/2007/08/01/hmn_feature24.html "extension housing casting number of 3857584 indicates the tail shaft housing is from a 1965-'70 passenger car with a 27-spline output shaft. "
"4-speed cars with higher performance engines received the Muncie transmission. The speedometer drive was on the passenger side of the transmission. The speedometer cable for Muncie-equipped cars exits the firewall on the right side of the steering column, above and behind the driver's side valve cover just above the throttle rod pivot, and it uses three clips to secure it to the firewall and tunnel. All other transmissions (including the M20 Saginaw) had the speedo cable exit on the left side of the steering column. "
There was also and interesting pic of a bare firewall showing the two locations where the speedo cable passed through. One hole for the Muncie and another hole for all of the otheres.