Making power out of the 318

junkyardhero said

well, if you insist on being priggish... he probably won't have to change the speedo cable.

the chances are that he's going to use a 904/727 or a variant therein, which *gasp* takes the same mechanical drive speedo cable and uses the same speedo drive as his specific 904 slant six transmission.

in fact, they used the same stuff even with some of the electronically controlled transmission that had mechanical speedometers.

swapping in a magnum engine doesn't have any bearing or effect on the speedometer cable, that is purely a function of the transmission.

Click to expand...

If I remember correctly, the op car is a 1973? No matter what transmission he uses it will have to be set up to work with the instrument cluster that he has, such as the speedometer. I'm sure that you know that if you change the size of your rear tires that it affects the way the speedometer works, same thing with a gear ratio change. I never said anything about the engine what so ever. If you still think that I'm wrong, drive your vehicle as is for a couple of miles, then put on either a taller or shorter height rear tire and drive it again the same amount of distance and see how far off the speedometer is off.