Beefing up rearend - Toyota Nation Forum : Toyota Car and Truck Forums

Ahbustae86 · 02-14-2005, 03:55 PM

I was going to swap in a 79-81 Supra rearend under my 86 corolla. I found a 1980 Celica for free. Anyone know if the 1980 Celica is different from the 1980 Supra? or are these the same cars? I see the term Celica/ Supra being tossed around too. I'm pretty lost. So is that particular model (Celica/ Supra) different from the 80 Celica or 80 Supra? Or is the 80 Celica, 80 Supra and 80 Celica/ Supra the same car and just different names? Please help.

surplusteve98 · 02-14-2005, 07:29 PM

the celica and the supra are not the same the supra will have a 7.5" rear end and the celica will have a 6.7" most likely the same as your corolls. the 7.5" is a verry nice up grade, we run one in our circle track car and I plan on using one in our rally car project. there is a huge selection of gears available, they can handle some big Hp, and it will have disc brakes. the only celica with a 7.5" is 1985 and they have drum brakes. if you look at the spec. plate on the fire wall under the hood there is a line for the transmision and rear end after the trans coad somthing like"W58 or W52"there will be an axle coad the letter T is for a 6.7" the letter F is for a 7.5" the numbers after that are a coad for the r&p ratio. I hope this is helpful.

Hotwheelharmer · 02-14-2005, 10:01 PM

Quote:

Originally Posted by surplusteve98

the celica and the supra not the same the supra will have a 7.5" rear end and the celica will have a 6.7" most likely the same as your corolls. the 7.5" is a verry nice up grade, we run one in our circle track car and I plan on using one in our rally car project. there is a huge selection of gears available, they can handle some big Hp, and it will have disc brakes. the only celica with a 7.5" is 1985 and they have drum brakes. if you look at the spec. plate on the fire wall under the hood there is a line for the transmision and rear end after the trans coad somthing like"W58 or W52"there will be an axle coad the letter T is for a 6.7" the letter F is for a 7.5" the numbers after that are a coad for the r&p ratio. I hope this is helpful.

you are right on some things and wrong on others. All Celicas that were RWD and a solid rear end came with the 6.7" rear end. There were a lot of different ring and pinions for them but all of them came with an open differential. the 83-87 Corolla's that were RWD also came with a 6.7" rear end and had a few choices of ring and pinions but some of the GTS models came with an LSD but there are different kind of axles for them as well. The GTS also came with rear disc brakes. However if you are looking at doubling your motors hp I would recommend something other then the 6.7" because they really are not that strong. As for a 7.5" stock in a Celica that came in the 84-85 GT-S model and it came with disc brakes but the only reason why it came with a 7.5" rear end is because it was the same rear end as the Supras of those years and those were independt rear suspension which you really don't want to switch over to that because it is a ton and ton of work and a lot of moeny wasted so really if you want a different rear end go with the 1st gen supra rear end.

surplusteve98 · 02-14-2005, 10:39 PM

I Don't realy know much about the history of the corollas, celicas or srupras I just pop the hood and look at the codes, we changed to the 7.5" for the durability and selection of r&p gears. Is there a reason you would use a 1st gen supra 7.5 over a 84-85 celica?
I thought they were the same.

Hotwheelharmer · 02-15-2005, 06:03 AM

Quote:

Originally Posted by surplusteve98

I Don't realy know much about the history of the corollas, celicas or srupras I just pop the hood and look at the codes, we changed to the 7.5" for the durability and selection of r&p gears. Is there a reason you would use a 1st gen supra 7.5 over a 84-85 celica?
I thought they were the same.

Well if you would read all of what I said in my first reply. The 2nd gen supra and the 84-85 Celica GTS is independent rear suspension. The 1st gen Supra is a solid rear end. That is why you would use the 1st gen supra because it would take a ton and ton of work to convert to independent rear suspension.

surplusteve98 · 02-15-2005, 08:19 AM

ok I missed that part , hey did toyota ever make a production lsd for the 7.5"

Hotwheelharmer · 02-15-2005, 09:59 AM

Quote:

Originally Posted by surplusteve98

ok I missed that part , hey did toyota ever make a production lsd for the 7.5"

Yes the 3rd gen and 4th gen supras came with an LSD in there 7.5" and I have heard the ring and pinion and differential is the same it is just the type of axles and the casing that is different. So that means you can put the LSD from the 3rd and 4th gen supras into the 7.5" solid rear end.