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Old 09-16-2009, 07:53 PM
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front rotor question

Hey guys i got a hand me down front disc brake kit if u will. The story goes my father in law bought a set for his 1948 ford pick up and decided to go with an Ifs kit that came with everything so when i got my 1949 pick up he gave me the kit. The kit look good but the problem is i have a nice set of wheels and tires when i got the truck and would like to use them again but bolt patteren is diffrent. Question is this should i use addapters or should i find new front rotors. The wheels are 5 an a half and the rotors are 4 an a half
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Old 09-16-2009, 08:02 PM
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My my personal deal ... but I would get the rotors for a 5 on 1/2 pattern. That way the front rims will match the rears and you do not have to BUY new rims.

By the Way ...

A 57 to mid 60's F-100 rear end ( which is a 9 inch Ford series ) is almost a direct bolt in in a 48 to 50 F-1. The advantage of the later rear is vastly stronger rear end, better availability of brake parts and passenger car center sections bolt in the pickup housing ... ( giving you a more HIGHWAY speed friendly rear ratio ).
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Old 09-16-2009, 08:11 PM
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thanks it came with a 9 inch from a gallaxy. Any clue were i could get some rotors that wont cost the price of a new kit lol
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Old 09-16-2009, 10:31 PM
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49, I'm running the disc brake conversion on my 56 F100. I have the 5.5 lug pattern as well on front and rear. Try contacting Classic Performance Products. They have a website as well. They may sell you just the rotor or let you know where you can get one, that's the kit I purchased. Another place to check is ECI brakes, they have conversion kits as well and mpbrakes.com another source. My opinion, it would be better to get the right rotor with lug pattern than to use an adapter. Adapters will also change the offset on you rims and tires, which you need to consider for clearance.
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Old 09-16-2009, 11:48 PM
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Just get the rotors redrilled, almost any machine shop could do it or you could send them to Moser Engineering or Dutchman Axles. Strange or Mark Williams might also do this.
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Old 09-17-2009, 09:24 AM
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Eric has some good advice. I was going to go the same route but found that a machine shop wanted more to drill the rotors out and put new lugs in than if I just purchased a new rotor. I know a friend of mine had put disc on the rear of his car and he was running a 9 in Ford rear end. The lug pattern was 4.5 and not the 5.5. We got a set of axle with the 5.5 lug pattern and simply drilled out. using a drill press at home, the rotor to a 5.5 pattern. The front is a little different because the lugs are pressed into the rotor and don't slide on like the rears. Since the front is more critical than the rear for driveability and safety, I would probably get the work done with a machine shop rather than doing it yourself in the garage.
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Old 09-17-2009, 09:52 AM
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IF you already have the Galaxie 9 inch ... ( it has the 5 on 4.5 pattern ) ... and plan on using it under the pickup ... Then by all means use rotors with the 5 on 4.5 pattern. I just hate having a vehicle with two different wheel bolt patterns ( requires two spares ).
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Old 09-17-2009, 02:26 PM
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deuce i agree with u. Two diffrent bolt patterns ar not fun. I think ive found some rotors at lmc if not ill be checking with moser eng. They seem decent to redrill. Thanks guys for all the help
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