Landracing Forum
Tech Information => Technical Discussion => Topic started by: Chad on February 23, 2004, 05:29:00 PM
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Is any one running a quick change in a door car?
how much power loss is there compared to a 9"
I have a chance to get a winters for cheep. I have been happy with the 9 I have but the quick change has a much larger cool factor
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Quick changes are run in all classes with much success. They do use more horsepower than a 9 in Ford. Most will give it up for the chance to get the "right" rear ratio. The biggest draw back is the lack of ring and pinions to start with. I believe a Winters is one of the QC's compared to a "Champ" or sprinter style. Most are 4.11 or 4.88. V-8 QC's can be fit with ring and pinions starting at 3.27. Higher ring and pinions for Champs are available at a sustantial cost if found. Thats where the horsepower is lost. Trying to make a 4.11 into a 2.20 those spur gears being so different in size chew up the horsepower. Same for overdrive transmissions, they use HP also. The 9 inch Ford is very strong and uses more HP than others due to it's pinion angle. But you gotta use something. Good Luck
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One more thing. I took a QC out of my roadster and put in a Pontiac/Olds. Better pinion angle plus I had a lot of the gears. They actually have a 2.56-2.69-2.86-3.00-3.08-3.25-3.42. Now I also use 5 sets of tire diameters and an overdrive Tex Racing trans which has a infinate gear selection for overdrive and still uses less HP than QC.
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JD do you know where to obtain a 3.27 ring gear for a V8 centre??
I've asked Patricks and Speedway - all to no avail. :(
I want to refit a Banjo to my coupe at a later stage, and 3.27 would be a great ratio for a very occassional salt racer.
Cheers
Mark
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They were available. Try all the Ford Obsolete sites. When I looked for the 15 years ago it took some time but I found 3 sets. Who knows now?