3:55's with a 2.3 yay or nay

86gter · August 2nd, 2009, 07:46 PM

hi, i picked up n 89lx 2.3 and was not sure of the stock rear gear ratio in these.
i have a 3:55 rear sitting here and wondered if i should put it in? it also is a 5 speed car.

also i pulled the motor to paint engine compartment and have the head redone due to loud ticking.
i was told that these motors hold up rather well in the mileage department, i have 160,000 miles on it, should i rebuild the bottom half or just buy a spare motor for 50 bucks if this one blows.

GT347SC · August 3rd, 2009, 08:10 PM

My 92 2.3 5 speed had a 3.45 rear from the factory and im pretty sure the 93 i just got has the same.

86gter · August 3rd, 2009, 09:21 PM

thanks for info, how can i find out what mine came with

hockey · August 4th, 2009, 12:33 AM

I have a 1990 auto, 4 cyl and mine has 3.73 gears. there is a tag on the rear end cover
usually at the top right side has a bunch of numbers on it it should say 7.3 or 8.8 others numbers then have the gear ratio on it .
If you rebuild the head and put it on the old block with old rings ,you are gonna blow the rings out , as redoing the head (valve job) will raise cylinder presure and the old rings will fail. what the guy did before i bought mine (it needs a rebuild)cause it to use alot of oil. hope this helps

notched306 · August 9th, 2009, 02:50 AM

the numbers on the tag a 3 then a letter then two other numbers,it will be on the bottom of the tag starting from the left.

86gter · August 9th, 2009, 12:32 PM

cool thanks

August 2nd, 2009, 07:46 PM	#1
86gter Newbie Join Date: Mar 2007 Posts: 47 iTrader: 0 reviews	3:55's with a 2.3 yay or nay hi, i picked up n 89lx 2.3 and was not sure of the stock rear gear ratio in these. i have a 3:55 rear sitting here and wondered if i should put it in? it also is a 5 speed car. also i pulled the motor to paint engine compartment and have the head redone due to loud ticking. i was told that these motors hold up rather well in the mileage department, i have 160,000 miles on it, should i rebuild the bottom half or just buy a spare motor for 50 bucks if this one blows. __________________

August 3rd, 2009, 09:21 PM	#3
86gter Newbie Join Date: Mar 2007 Posts: 47 iTrader: 0 reviews	thanks for info, how can i find out what mine came with __________________

August 9th, 2009, 02:50 AM	#5
notched306 Regular Join Date: Aug 2008 Location: tucson,az Posts: 73 iTrader: 0 reviews	the numbers on the tag a 3 then a letter then two other numbers,it will be on the bottom of the tag starting from the left. __________________ my car runs on corn bitches Joey

August 9th, 2009, 12:32 PM	#6
86gter Newbie Join Date: Mar 2007 Posts: 47 iTrader: 0 reviews	cool thanks __________________

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August 3rd, 2009, 08:10 PM	#2
GT347SC Regular 89 GT, 92 LX Join Date: Nov 2008 Posts: 119 iTrader: 0 reviews	My 92 2.3 5 speed had a 3.45 rear from the factory and im pretty sure the 93 i just got has the same.

August 4th, 2009, 12:33 AM	#4
hockey Regular 1990 LX 2.3 Mustang under construction Join Date: Jan 2008 Location: Gordon Ga. Posts: 79 iTrader: 0 reviews	I have a 1990 auto, 4 cyl and mine has 3.73 gears. there is a tag on the rear end cover usually at the top right side has a bunch of numbers on it it should say 7.3 or 8.8 others numbers then have the gear ratio on it . If you rebuild the head and put it on the old block with old rings ,you are gonna blow the rings out , as redoing the head (valve job) will raise cylinder presure and the old rings will fail. what the guy did before i bought mine (it needs a rebuild)cause it to use alot of oil. hope this helps

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