suggestions

thundergod · 04-16-2005, 04:19 AM

thanks for the reply. ok underdrives yes . please suggest mid pipe and catback system. also want to change gears. i do some hiway driving would 3.55 or 3.73 be best what kind of rpm would i be pulling with each at about 75 miles per hour with auto tranny

USMCstang · 04-16-2005, 06:42 AM

Go with 4.10's or 4.30's, and never look back. PM Dean, (Blue02GT) He has 4.30's on his D/D Auto. My 4.10's won't be installed for a couple more weeks, so I couldn't tell you an exact number. I belive each step up in gear ratio is about 200 RPM at 65 miles per hour

ModMotorRacer · 04-16-2005, 05:12 PM

Quote:

Originally Posted by thundergod

thanks for the reply. ok underdrives yes . please suggest mid pipe and catback system. also want to change gears. i do some hiway driving would 3.55 or 3.73 be best what kind of rpm would i be pulling with each at about 75 miles per hour with auto tranny

with a stock size tire 26" or so you will be running 2500rpm@65mph with 4:10's and 3000rpm@75mph. Add aboout 200-300rpms to those for 4:30's

Adam

04-16-2005, 04:19 AM	#1 (permalink)
thundergod Senior Member Join Date: Apr 2005 Posts: 116	suggestions thanks for the reply. ok underdrives yes . please suggest mid pipe and catback system. also want to change gears. i do some hiway driving would 3.55 or 3.73 be best what kind of rpm would i be pulling with each at about 75 miles per hour with auto tranny

04-16-2005, 06:42 AM	#2 (permalink)
USMCstang Secretary of Defense Join Date: Apr 2005 Location: Akron, OH...5 Mins from Summit Racing Posts: 355	Go with 4.10's or 4.30's, and never look back. PM Dean, (Blue02GT) He has 4.30's on his D/D Auto. My 4.10's won't be installed for a couple more weeks, so I couldn't tell you an exact number. I belive each step up in gear ratio is about 200 RPM at 65 miles per hour __________________ ~Mike 98 GT 4R70W Buckeye Stangs - Ohio Based Mustang Enthusiasts

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