Ford Mustang Forum - View Single Post - What to do with $1,500?
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post #13 of (permalink) Old 06-14-2006 Thread Starter
donks232's Avatar
Joined: Jun 2006
Posts: 31
Originally Posted by kscoyote
it's an old school trick for an easy 5 hp -before EFI

Each step will knock off 1-2 mpg. What'll kill you is your RPM. If you like screaming at 3000+ rpm, then 4.10s are for you!
i know what a udp is, i think some ppl have dyno'ed it to give 7-8hp/tq. thats pretty nice for about 200$

im not 100% what gears come stock. are the 3.27 then 3.55 then 3.75 then 4.10
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