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Author Topic: another drag racer question  (Read 2903 times)

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Offline don33

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another drag racer question
« on: January 25, 2012, 06:59:51 AM »
rear end gearing,  373 or 410 for the pinto ?

Offline jim72

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Re: another drag racer question
« Reply #1 on: January 25, 2012, 09:57:16 AM »
what does the rest of the gearing look like (ie) gearbox and what do you want for rpm through the traps?

Offline v8junkie

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Re: another drag racer question
« Reply #2 on: January 25, 2012, 12:44:31 PM »
Tire dia., final gear ratio of trans, trap speed, is car going to be driven on the street/freeway..all these things play in to what can be acceptable or optimal gears.
73 Pinto Wagon
68 Camaro
13 Camaro

Offline don33

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Re: another drag racer question
« Reply #3 on: January 25, 2012, 10:04:45 PM »
the car will have a C4 and use 26 - 28 inch tires wich ever works best.  as far as trap rpm, maby 7000.

Offline pintoman1972

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Re: another drag racer question
« Reply #4 on: January 25, 2012, 10:15:27 PM »
My question is what et are you capable of running with the car.  That is how fast do you want to go and is your car built to the rules to run that speed. 

We build our drag cars to run in certain classes knowing the rules, et and speeds to run.  Knowing that info, we then build the motor, tranny, rear end and install the correct tire size to fit those rules and specs.

Your question of "rear end gearing,  373 or 410 for the pinto ?" does not provide enough info for anyone to give you a proper answer.

So, fill us in on the rest of the story......

As a side note, I will be attending the NHRA GATOR NATIONALS in Gainseville, FL in March to help a few local racers who attend that event.

Dick

Offline pintoman1972

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Re: another drag racer question
« Reply #5 on: January 25, 2012, 10:25:57 PM »
Ok Don,

What kind of HP are we talking?

Offline don33

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Re: another drag racer question
« Reply #6 on: January 26, 2012, 09:11:32 AM »
we are talking a 2.3 turbo motor making 450 - 500 HP.

Offline beaner

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Re: another drag racer question
« Reply #7 on: January 26, 2012, 05:18:42 PM »
try this site lots of calculators
 
http://www.bgsoflex.com/auto.html
 
brad :)

Offline fast64ranchero

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Re: another drag racer question
« Reply #8 on: January 26, 2012, 08:27:14 PM »
Don33 what ECU are you planning on using? just wondering, my 2.3 turbo is built pretty well and I'm only 350whp, figure 2300lbs and 450hp your car should go 10.0's at 135,  so 4.10 gears and a 27" tall tire will put you @ 6900 rpms, I'd run a lower gear and a taller tire, taller tires hook better due to the taller sidewall.
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73 pinto, the nice one...

Offline don33

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Re: another drag racer question
« Reply #9 on: January 28, 2012, 05:01:50 AM »
will be running a pimp ms unit from stinger performance.

Offline fast64ranchero

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Re: another drag racer question
« Reply #10 on: January 30, 2012, 09:14:51 AM »
I understand Stinger has a pretty good unit, what are you going to do for head work, cam and turbo? I'm running a stage 3 head and cam from Bo-Port and a 62-1 Turbonetics turbo, not the ideal turbo, but I already had it...
71 Pro-Street pinto 2.3T powered
72 Treasure Valley Special 26K miles pinto
72 old V-8 parts Pinto
73 pinto, the nice one...

Offline don33

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Re: another drag racer question
« Reply #11 on: January 30, 2012, 05:55:04 PM »
pintoman1972, I don't know how fast it is capable of, it's still in the build stage.  I want to run as close to 10.00 as possible.

fast64ranchero, I am running a stage 3 head and cam also, a holset hx35 turbo, not the ideal turbo, but I already had it.  once I get it running and dialed in the turbo will probably be upgraded.