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07-12-2013, 07:04 PM | #1 |
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Jerico 4 spd ratio?
Whats a good ratio for a 550 hp motor with 4.56 rear gears at 3000lbs? I know its a little vague.
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07-13-2013, 12:10 AM | #2 |
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Re: Jerico 4 spd ratio?
You need to call Jerico and be a little (actually a lot) less vague. Any other advice at this point is pure speculation and pretty much useless.
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Dale Posnick |
07-13-2013, 08:46 AM | #3 |
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Re: Jerico 4 spd ratio?
30 x 9 tires ? smallblock ? we switched from a 3.25 first with a 5.57 rear to 2.75 x 6.0 ,similar results . If I were buying new 3.08 ---Trevor
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07-13-2013, 09:56 AM | #4 |
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Re: Jerico 4 spd ratio?
The standard Jerico ratio that you see is typically a 3.19 low. If you don't have adequate hook, maybe 3.08 or even less, but only if you are working around less then ideal set up like a street strip car or small tire combo that does not work well. Clutch plays a big role. 4.56? Low rpm engine or street strip? If you can't hook the low gear and adapt the ratios to compensate, get a gear set that is easier to upgrade. Make sure the forst gear set is 33/15 and work with Scott at Jerico to pick the rest. If you plan on ramping up the car to handle the more traditional race ratios, it makes a difference. If you do it right, you can then change only main drive gears to go to a 3.19. If you pick some weird ones, it gets expensive because you have to choose a whole set.
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James Schaechter 3163 STK |
07-13-2013, 10:44 AM | #5 |
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Re: Jerico 4 spd ratio?
After a discussion with Scott on my fairly similar combination, I got 3.08, 1.93, 1.34 iirc.
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07-14-2013, 11:41 AM | #6 | |
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Re: Jerico 4 spd ratio?
Quote:
Last edited by L79racer; 07-14-2013 at 11:45 AM. |
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07-14-2013, 09:10 PM | #7 |
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Re: Jerico 4 spd ratio?
http://www.jericoperformance.com/charts.htm
This lists the chart on gears. How much power and how much weight. What RPM do you plan on finishing at? The reason I ask is that your shift rpm doesn't seem to match your gear selection. Not saying you are wrong. Just need more info. If youhave the power and torque to run a lot of mph, then maybe you need a 2.90 something first gear. If not and you can't handle the rpm on the other end, maybe reconsider the shift rpm also?
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James Schaechter 3163 STK |
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