Poor Acceleration with a 5.9 vs 5.2
#21
04-23-2006, 02:17 AM
RE: Poor Acceleration with a 5.9 vs 5.2
think about it this way... 3.55:1 gear ratio is what you have... the final drive ratio (driveshaft for ease of terminology) will have to turn 3.55 times to make the tires spin 1 revolution... now you got 4.10 ... driveshaft spins 4.10 times to get the tires to spin ones... means higher RPM's to help put the HP and TQ to the tires... lower gears would help MPG's only in certain cases where you run small tires... higher gears will hurt your MPG's making the motor higher inthe RPM's but will let it get out of its own way.. i got 4.10's and i was runnin a tiny 265 tire for the winter,,, oh man would i ever spin them tires aLL the time... wiht your 275's it would help to run 4.10's or even 4.56's (kinda overkill though,, leaves you the option to run bigger tires down the road)
and yea dude.. a clogged ANYTHING will hurt ALOT... a regular tune up could be in order... and get that cat checked out
i belive them weirdos in Cali are used to 3cats... i have an 01 and a buddy has a 00 and we both have single cats... non cali vehicles..
im pretty sure youll have 1 cat
hope this helps
and yea dude.. a clogged ANYTHING will hurt ALOT... a regular tune up could be in order... and get that cat checked out
i belive them weirdos in Cali are used to 3cats... i have an 01 and a buddy has a 00 and we both have single cats... non cali vehicles..
im pretty sure youll have 1 cat hope this helps
#22
04-23-2006, 02:25 AM
Record Breaker
RE: Poor Acceleration with a 5.9 vs 5.2
ORIGINAL: shott8283
think about it this way... 3.55:1 gear ratio is what you have... the final drive ratio (driveshaft for ease of terminology) will have to turn 3.55 times to make the tires spin 1 revolution... now you got 4.10 ... driveshaft spins 4.10 times to get the tires to spin ones... means higher RPM's to help put the HP and TQ to the tires... lower gears would help MPG's only in certain cases where you run small tires... higher gears will hurt your MPG's making the motor higher inthe RPM's but will let it get out of its own way.. i got 4.10's and i was runnin a tiny 265 tire for the winter,,, oh man would i ever spin them tires aLL the time... wiht your 275's it would help to run 4.10's or even 4.56's (kinda overkill though,, leaves you the option to run bigger tires down the road)
and yea dude.. a clogged ANYTHING will hurt ALOT... a regular tune up could be in order... and get that cat checked out
i belive them weirdos in Cali are used to 3cats... i have an 01 and a buddy has a 00 and we both have single cats... non cali vehicles.. im pretty sure youll have 1 cat
hope this helps
think about it this way... 3.55:1 gear ratio is what you have... the final drive ratio (driveshaft for ease of terminology) will have to turn 3.55 times to make the tires spin 1 revolution... now you got 4.10 ... driveshaft spins 4.10 times to get the tires to spin ones... means higher RPM's to help put the HP and TQ to the tires... lower gears would help MPG's only in certain cases where you run small tires... higher gears will hurt your MPG's making the motor higher inthe RPM's but will let it get out of its own way.. i got 4.10's and i was runnin a tiny 265 tire for the winter,,, oh man would i ever spin them tires aLL the time... wiht your 275's it would help to run 4.10's or even 4.56's (kinda overkill though,, leaves you the option to run bigger tires down the road)
and yea dude.. a clogged ANYTHING will hurt ALOT... a regular tune up could be in order... and get that cat checked out
i belive them weirdos in Cali are used to 3cats... i have an 01 and a buddy has a 00 and we both have single cats... non cali vehicles..
im pretty sure youll have 1 cat hope this helps
shott-
what were your RPM's at 70 mph or so with the 4.10's and the 265's
#23
04-23-2006, 03:38 AM
RE: Poor Acceleration with a 5.9 vs 5.2
4.10's with 265's at 70 were 2600 .. i put the stock 275's back on and recal'd the speedo and im at 2300... when i get the new tires 295's or 305's i should see 2000 or 1900.. but thats borderline for performance loss... but my MPG's might get better on the highway witch i do most of the my driving..
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04-23-2006, 05:02 PM
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04-23-2006, 07:24 PM
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04-23-2006, 07:34 PM
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04-23-2006, 09:26 PM
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