I have a 67 coupe and i want to change the entire axle setup to a modern one. from breaks to defferntial can i just bolt one directly up or do i have to fuse or cut the parts??? what modle stang would b best?? also i have a 3sd standard trans i want the car to get up and go and have decent high speed would i wanna use a axle from an automatic trans car??

 

A 9" would be the best setup to get IMO. Unless your building a beast, they will handle high hp well.

By "modern" im assuming you mean something like the SN95 diff you suggested earlier. That would be a 8.8". You would have to modify it to mount on spring perches, since SN95's used coils, and I also believe the overall width is incorrect. For your 9", the width should be 59.25" axle face to axle face, or there abouts.

You could also get a 8" as they are easier to find and cheaper. They wouldnt be as strong as a 9" but it depends on the hp/torque your planning....

Nic

 

well i have an 8" on it now but i want a traction lock diff what should i do i dont wanna spend 1200 if i dont have to. im not trying to make it a dragster or anything just a little somethin somethin

 

Have you checked out Ebay or Craigslist? I see differential parts on there all ther time..

If your main goal is tracloc, you could just pull the centersection out of the differential and replace it with another unit that already has a locker installed. 8 and 9 " share the same housing, so a 9" center would slap into yours too(so ive heard).

Just make sure the spline count is the same for the axles (yours should be 28) and the gearing is appropriate. Mine has 2.73[:'(]

 

well would i want the stock ratio or what??? im willin to spend 350 or so on track lock. i want a car the has nice low end torque and a decent top speed cause i mean i have a 3sp standard trans not alot of playin room

 

Not sure what the stock ratio was on yours, I guess there are lots of combinations from the factory. Im no expert by any means, but 3.50 gearing seems to be a balanced ratio for street and highway, but still with some umph.

 

thanks really appriciate it i also have a ?? on carbs if u dont mind

what would be a good cfm for my stock 289 like i said i dont want a draster runnin 10's or anything but i want umpff. i was sugested a 500 cfm from holley what do u think??

 

omg i have no idea lol, you'll have to ask someone else. Ill let you know if I see a decent diff. center.

 

If you want a great daily driver carb that you put on and drive, buythe 600 cfm edelbrock with the elect choke. Holleys make more power but you have to tune them to get it. I've had 5+ brocks and I love em!!

 

Do not put a 600CFM carb on a stock 289:-| Way too big for that engine. An Autolite 4100 would be the perfect match (at an overrated 480CFM), but an Edelbrock 500 would be great as well if you can't find an Autolite.

Overcarbing is going to result in poor throttle response and reduced fuel economy.