Changed out my rear end chunk 2day. from a 2.76 to a 3.23. I notice that the speedometer is off. How can this be corrected? it says 70mph but cars are flying by me. So I cant be going 70.

look in the archives. there is a speedo gear chart

Change the speedo gear in the trans. The older small gears are not repoed as far as I know. What year car or trans?

yep.should be a nice seat of the pants diff with the gear swap

the plastic gear in the tail shaft of tranz were the speedo cable hooks up needs swaped out

the have # of teeth on gear and is clocked in the tail saft acording to how many teeth

the plug the gear rides in has diff #s to clock with the mark on the tail shaft for correct alinement

yes the chart will tell you what gear is needed and is easy to swap out

well do you like the 3.23s in there now?

ok...there is a difference in the take off for sure. However, I thought I would be able to just smoke the [Edited by Moparts - Family Friendly Site - Keep it clean] off my tires. That's not the case. Yes I have the 440 and 727 tranny. But my exaust is 2 inch pipe. I'm changing my exaust after Christmas and then I'll know the real deal. It's a stock engine from a 70 Chrysler New Yorker. But It responds so much better.

What vehicle do you have it in?

a 70 plymouth Satellite GTX Clone.

A 440 even with the 2.76 should smoke the tires.

2.76 gear should smokem? I believe my exaust is too restrictive.

What kind of car is this in ? The 2" exhaust is not ideal but a 440 should smoke street tires even with a high geared rear. Does your engine run 'strong' or does it bog ? You may have problems with your timing or carb setup. I don't think the gear is your problem.

i just got the timing adjusted yday again. Adjusted to factory specs and no pinging. Carb is a rebuilt Holley 750 dual line.It runs strong I guess. I've never driven anything with a 440 to compare too. I'm putting a cam,timing chain and lifters in it next month if the cam bearings are ok..ADVICE?

If you swapped to a wild cam and left stock converter in it, it could be a dog out of the hole.

I think I need a Cam in that bad boy..Cheep fix for now..I'll do a total rebuild next year.

So do I need to put in a Cam. The engine is a non HP 440.

A stock engine out of a '70 New Yorker should be able to pull a tree out of the ground in low gear. I would work with the timing curve and the carb before I made too many changes. If your timing chain is badly worn, then it could be part of your timing problem ? It looks like you have a nice car to work with. Don't go too wild with you new cam or it will kill your bottom end without gears/converter.

ok...how about a mild cam, lifters and timing chain and gear?

ok....does the timing chain effects oil pressure?