7.25 question

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andrew3408

andrew3408

1969 Plymouth valiant
Joined
Nov 24, 2014
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Location
Republic,mo
I got a 69 plymouth valiant with the above 7.25 slant 6 car i am wanting to know if i find a 7.25 from a dakota from the 80's to 90 if it will fit under the car? I am wanting to have a 3.55 gear for the car to give it more power or will the internals will fit in my housing? I am hoping to find one with a sure grip unit in it also i know some of you will tell me the 7.25 is a junk rearend and go for a 8.75 to put in the car.. but they are so pricey anymore.. and i like to keep my 5 on 4 in bolt pattern thanks guys.. Andy
 
Changing the gear set will not give your car more power.
 
RustyRatRod said:
Changing the gear set will not give your car more power.
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there are at least 5 other things i am going to do to the engine itself( cam milling the head, headers and either a 2 barrel or 4 barrel intake and carb).. which the gears will help in that plus gas mileage will not be hurt to much or street ability.
 
update on the rearend part i found a 8.75 with everything except my 355's which he sold already but i am getting the 323 with a sure grip everthing thing there except the brake hardware.. all for 850.00 oh i and i get to keep my small bolt pattern on my valiant
 
$850?

Good grief that's a lot of money for a used rear axle.
 
Now would be a great time to upgrade to the larger bolt pattern. That 5 on 4 is a PIA. Be a great time to upgrade fronts to disc brakes also. Drum brakes sucked back in the 60's. Do not belong on roads that are going 80+
 
72bluNblu said:
$850?

Good grief that's a lot of money for a used rear axle.
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have you seen the prices for a 8.75 rearend here recently? the resto catalog i got it is over 3200 dollars for it and moser is about the same and i seen on here in the parts for sale 500 just for the housing.. so i am getting a great deal:burnout: likei said it includes everything except the brake hardware.. i am getting the 10 inch brake drums.. shock plates and u bolts
 
Jo Diesel said:
Now would be a great time to upgrade to the larger bolt pattern. That 5 on 4 is a PIA. Be a great time to upgrade fronts to disc brakes also. Drum brakes sucked back in the 60's. Do not belong on roads that are going 80+
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i am going disc on the front but 5 on 4 for it too i am getting the 5 on 4 rallyes to put on the car!!!
 
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