View Poll Results: What gear ratio you using?
Below 2.73
0
0%
2.73-3.42
85
39.17%
Above 3.42-4.11
129
59.45%
Above 4.11's
3
1.38%
Multiple Choice Poll. Voters: 217. You may not vote on this poll
FI Cars: What gear ratio are you running?
11-09-2006, 10:04 AM
#1
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FI Cars: What gear ratio are you running? Post up your gear ratios and 1/4 ET's and Traps.
And slicks/tires and sizes being used.
Specify transmission, M6 guys post up.
And slicks/tires and sizes being used.
Specify transmission, M6 guys post up.
11-09-2006, 10:29 AM
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I think you'll benefit from a couple more categories to make this meaningful... 3.42 to 4.11 is gonna capture a lot of FI M6 cars. FWIW, I have 3.50 in a 9".
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11-09-2006, 11:26 AM
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3:10 eh, what you run in the 1/4 for trap speed?
I am tryin to decide on a gear ratio i plan on building a FI engine soon and am buying a 9" soon.
I am tryin to decide on a gear ratio i plan on building a FI engine soon and am buying a 9" soon.
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11-09-2006, 11:59 AM
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I have heard good things from both 3.08 and 3.50's, i suppose it depends on tire choice as far as diameter. If i plan on running 140mph in a quarter wouldnt 3.50's be more optimum due to getting close to redline at the end of quarter?
Or would u gain that much more time from loading the turbo more?
Or would u gain that much more time from loading the turbo more?
11-09-2006, 12:23 PM
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Sounds to me just for rpm a 3.50ish gear is optimal then.
Is it good for an M6 and spooling issues with a turbo?
Is there an advantage from a 3.08 compared to 3.50?
I have just heard gears like 4.11s are bad and dont spool turbos efficiently.
Is it good for an M6 and spooling issues with a turbo?
Is there an advantage from a 3.08 compared to 3.50?
I have just heard gears like 4.11s are bad and dont spool turbos efficiently.
11-09-2006, 12:33 PM
#14
Originally Posted by nahasapeemapetalon
Sounds to me just for rpm a 3.50ish gear is optimal then.
Is it good for an M6 and spooling issues with a turbo?
Is there an advantage from a 3.08 compared to 3.50?
I have just heard gears like 4.11s are bad and dont spool turbos efficiently.
Is it good for an M6 and spooling issues with a turbo?
Is there an advantage from a 3.08 compared to 3.50?
I have just heard gears like 4.11s are bad and dont spool turbos efficiently.
4.11s would be alright... But you'll be spinning your engine to a high RPM.. IN the 8xxx on a 28" tire, I believe. You would get some more topend power. If your engine is making peak hp at 6300 rpms then 4.11s would not be a good gear Spooling may become an issue with the short gears.. Not too bad with a twin turbo setup... I'd say.. I believe some of the top dog BIG single turbos are running 3.73s..
11-09-2006, 04:28 PM
#19
Originally Posted by smokinHawk
ill through this out here again of a spreed sheet i put together of gear ratios
https://ls1tech.com/forums/attachmen...chmentid=79468
https://ls1tech.com/forums/attachmen...chmentid=79468
11-09-2006, 04:38 PM
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i've got a 12 bolt with 4.10s and a d1sc.... havent got to drive it yet but i already wish i had a 9'' so i could put a 3.50 in it with a spool...
im going to change to 3.73's and i have 28'' tires...
im going to change to 3.73's and i have 28'' tires...