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Author Topic:   What rear gear ratio
FALCOMANIA
Journeyman

Posts: 50
From: Opelika Ala USA
Registered: Apr 2003

posted 05-07-2003 07:35 PM     Click Here to See the Profile for FALCOMANIA   Click Here to Email FALCOMANIA     Edit/Delete Message   Reply w/Quote
Need a little help (lotta help) on gear ratio.

2900lbs.
302 .030 9.1
Performer RPM 650 DP.
1.76 glide 4800 conv tranny brake
10.5 x33 tire
Mostly 1/8 mile
cross 1/8 mile about 6000 6200

Thanks
Randy

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capri man
Gearhead

Posts: 4320
From: doerun, ga.
Registered: Nov 2000

posted 05-07-2003 08:17 PM     Click Here to See the Profile for capri man   Click Here to Email capri man     Edit/Delete Message   Reply w/Quote
about a 8.46 would work well randy. cause i figure you will be looking for a duck (me) and i want you to blow up before we get to the finish line!!! LOL
my opinion is (and you know what they are worth) is with the glide a 4.56 or better would be where i would start. my combo is similar with a c/4 and a 4.10. i think i could use a little more myself.
good luck buddy

------------------
mike r
racing is real
everything else is just a game.
81 capri-7.51 @89mph 1/8
1.54 60 ft.
http://prestage.com/site/site_display.asp?SiteID=141

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FALCOMANIA
Journeyman

Posts: 50
From: Opelika Ala USA
Registered: Apr 2003

posted 05-07-2003 08:34 PM     Click Here to See the Profile for FALCOMANIA   Click Here to Email FALCOMANIA     Edit/Delete Message   Reply w/Quote
Hey Mike if me and you raced we would probably both loose

Randy

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Dave_C
Gearhead

Posts: 788
From: Gadsden, Al
Registered: Aug 99

posted 05-07-2003 09:23 PM     Click Here to See the Profile for Dave_C   Click Here to Email Dave_C     Edit/Delete Message   Reply w/Quote
You say "mostly 1/8 mile". Keeping the rpms down to 6200 will be tough in the 1/4. You would have to go to a 3.70 or 3.91 with the glide.

If you said 1/8 only, I would give that little motor some gear. About a 5.00 would put it right at 6200 through the lights. A 4.88 would work also and drop the rpms to 6000 or so. But, you can't run the 1/4 with either of them.

In my old door car I used to turn 6500 in the 1/8 with a tire about the same diameter, but I had 5.43's and a looser converter (about 5400)

Later,
David Cole
97 Undercover 225"
557" BBF, [email protected] 1.40 1/8

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Moneymaker
Administrator

Posts: 21725
From: Lyons, IL, USA
Registered: May 99

posted 05-07-2003 09:41 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
4.88

------------------
Alex Denysenko
Co-Administrator and Moderator

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jsracingbbf
Gearhead

Posts: 2160
From: Batesville,MS. , U.S.A.
Registered: Mar 2002

posted 05-07-2003 11:32 PM     Click Here to See the Profile for jsracingbbf   Click Here to Email jsracingbbf     Edit/Delete Message   Reply w/Quote
Why don't you change your glide planetaries to a 1.81 low gear set. Buy some that have a stud girdle welded on them for extra strength. About $100.00
Then try a 4.88 or 5.14 rear gear.

------------------
Jerry
69 Mustang Pro ET Drag
70 Mustang retired former footbrake car

"Whiskey for my men, beer for my Horses" -- Toby Keith

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