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post #1 of 29 Old 09-06-2012, 07:34 PM Thread Starter
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what gear for turbo stick car

i got a g-force straight cut tranny with 373 rear gears. currently im supercharged and is wondering what everybody is running on their turbo stick setup. i'm building a dart 408 with afr 225 and putting a bw s480 turbo in. i know i won't be as consistent or fast if i had a auto, but i like challenges and banging gears.


92 white lx notch, FS dart 408, bw s480 turbo, 1&2 th400, super vic, afr 225,csu750, custom 1 7/8 headers, dual tial 38mm wg
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post #2 of 29 Old 09-07-2012, 07:11 PM
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Depends how high you you want to turn that monster.Should be a fun ride!!
I was running 3.73s with my stock block turbo on 28s. Maybe try them out first?


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post #3 of 29 Old 09-07-2012, 07:29 PM
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Doesn't matter. You will go auto soon with that motor/turbo combo if your plan on using that turbo to its potential.
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post #4 of 29 Old 09-07-2012, 07:48 PM Thread Starter
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prob shift it 7000+. i have another question. i wanna run a 4 barrel efi carb w/ hat. i have a super vic efi intake. should i go with the 4150 or 4500 tb w/ 4150 adapter. do i need to go with the bigger tb even though it will be turbo forcing it or will the 4150 work. i also got a buddy with an auto setup who wants to trade me for his.

92 white lx notch, FS dart 408, bw s480 turbo, 1&2 th400, super vic, afr 225,csu750, custom 1 7/8 headers, dual tial 38mm wg

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post #5 of 29 Old 09-08-2012, 12:06 AM
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A lot less power, but we've tried 3.08 3.55 and 3.73 in our turbo stick cars.

One car is a 351 Gt40 top end 14psi with a tko 600, it had 3.08s in it, switched to a 3.55 and the car picked up tremendously.

We roll raced a turbo bmw before and after the gear swap, had him by maybe 1 car with the 3.08 gears.... 3.55 we yanked him by 3+.
No changes other than that to either car.

My car is a stockish 302 with 3.73s and 8psi from a 70mm, it spools like a freak but i have trouble keeping it planted with 275 street tires. My buddy with the windsor car is contemplating trying 3.73s as well.

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post #6 of 29 Old 09-08-2012, 08:53 AM Thread Starter
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i guess i'll just have to just try it out. but i'm still on the fence either 4150 tb or the elbow. plus i'm worried about clearance going to a taller motor with the 4 barrel

92 white lx notch, FS dart 408, bw s480 turbo, 1&2 th400, super vic, afr 225,csu750, custom 1 7/8 headers, dual tial 38mm wg
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post #7 of 29 Old 09-08-2012, 08:58 AM
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All depends on your setup. The longer gears are supposed to help with the lower gears and spooling.

It makes sense that it would be slower from a roll if you have some high rpm setup
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post #8 of 29 Old 09-10-2012, 04:28 PM
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post #9 of 29 Old 09-10-2012, 04:42 PM
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I started with 3.73's in my turbo car and decided to try 3.27's and have not looked back. Really like the gear, with my T5-Z I can cruise at 65mph at under 2000rpm and still get more than enough spool in 1st and 2nd gear to blow the tires off.

Combo is a stock block 302, trick flow street top end, and a hellion kit with a turbonetics T66 turbo, running AEM EMS for tuning.

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post #10 of 29 Old 09-11-2012, 12:21 PM
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I think it depends on your power band...I went to 3.27s from 3.73s and honestly, with my powerband they arent anything special and the cars probably slower than when I had the 3.73s.

My powerband sucks currently and is more like a centri blower power curve than a turbo curve so thats probably my real issue.

I dont have that broad torque curve to pull me through the rpm, hopefully the stock cams change that though.

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post #11 of 29 Old 09-12-2012, 08:32 PM
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Your auto, he's talking stick car, so you'd need a bit more gear

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post #12 of 29 Old 09-14-2012, 04:38 PM
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Ahh I see...or a bit more power.
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post #13 of 29 Old 09-14-2012, 06:04 PM
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My Gforce T5 grenaded 3rd gear with a fairly mild twin-turbo 331. I don't think yours will hold up long with the kind of power you'll be making.

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post #14 of 29 Old 09-14-2012, 07:58 PM
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hows that go...a fairly mild twin turbo 331...


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post #15 of 29 Old 09-14-2012, 08:45 PM Thread Starter
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what kind of g force do u have straight cut gears or helical.. i know they all are rated at 600 but maybe the straights cut might be a lil stronger. i'm just hoping for the best and ur prob right thomaswpt . lol

92 white lx notch, FS dart 408, bw s480 turbo, 1&2 th400, super vic, afr 225,csu750, custom 1 7/8 headers, dual tial 38mm wg
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post #16 of 29 Old 09-14-2012, 10:46 PM
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that car's going to make sick power so i'd say 331s/327s or possibly 308s. i swapped from 373s to 331s and the only regret is that i should have done it sooner. my 550 tune with 331s now feels like my 650 tune did with 373s.

also, if i was you i'd sell that Gforce T5 before anything brakes cause it will NOT survive the torque of this turbo setup. i was in similar boat and sold by astro super T5, and got a viper spec T56.

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post #17 of 29 Old 09-15-2012, 09:54 AM Thread Starter
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what tranny would u recommend as a manual also a auto. my buddy has a c4 who wants to trade me, but am skepital if it can handle the power. this car is prob gonna be a 50/50 street strip car. i do like to cruise it and bang gears and don't wanna trade him b/c i think my setup is worth more but that's just me.idk if it is lol. str8 cut dog ringed w/ g force case and everything else quicktime bell housing and hydraulic clutch.

92 white lx notch, FS dart 408, bw s480 turbo, 1&2 th400, super vic, afr 225,csu750, custom 1 7/8 headers, dual tial 38mm wg
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post #18 of 29 Old 09-16-2012, 05:15 PM
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viper or mangnum spec T56 as the only way to go.

not an auto guy so can't comment on it.

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post #19 of 29 Old 09-17-2012, 01:59 AM
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I've watched stock t-5s handle 500hp.... don't bang the gears. mine took a blower setup making 380ish for a year, no problems... and now is holding my turbo motor making probably 400+.

Just be mindful of that t-5 when you're playing.


Power shifting, clutch dumps, etc. The power isn't what kills them, it's the shock... Just my .02

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post #20 of 29 Old 09-17-2012, 07:34 PM
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Have 4:10s with a 67mm on a 331. Blows the tires off 1st - 4th. Only had them because I originally planned s/c instead of turbo. Going to a 3.55 soon

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post #21 of 29 Old 09-17-2012, 08:28 PM
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Installed a mach1 rearend in mine with 3:55 gears and a 5spd and love it to death. It screams opening it up on the highway. 331 stroker, t67 turbo on 11lbs. Hp is recorded in my sig.

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post #22 of 29 Old 09-19-2012, 07:02 AM
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Quote:
Originally Posted by MJs89GT View Post
I've watched stock t-5s handle 500hp.... don't bang the gears. mine took a blower setup making 380ish for a year, no problems... and now is holding my turbo motor making probably 400+.

Just be mindful of that t-5 when you're playing.


Power shifting, clutch dumps, etc. The power isn't what kills them, it's the shock... Just my .02

Actually, it is the power that kills them. A majority seem to grenade rolling into 3rd gear in boost. I've seen many t-5's let go this way (my own included). Now, a G-Force is typically known capable of handling more power, although the weakness still lies in the tranny itself. I've heard of many letting go the same way as stocker (albeit at a higher power). IMHO, the only reason for keeping the t-5 is for the butter smooth shifting and quietness. As soon as you upgrade to straight cut gears, dog ring kit's etc., you might as well switch to a more capable tranny completely.

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post #23 of 29 Old 09-19-2012, 09:26 AM
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Have 4:10s with a 67mm on a 331. Blows the tires off 1st - 4th. Only had them because I originally planned s/c instead of turbo. Going to a 3.55 soon
4:10 with all that power! Wow!
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post #24 of 29 Old 09-19-2012, 04:03 PM Thread Starter
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i already have the the str8 cut dog ring w/ g force case. when i bought the tranny i wasn't planning on do this much. but got into hitting the drags and power hngry now for single digits. lol so now im doing a new setup. if i was to do an auto what would be best for street/strip

92 white lx notch, FS dart 408, bw s480 turbo, 1&2 th400, super vic, afr 225,csu750, custom 1 7/8 headers, dual tial 38mm wg
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post #25 of 29 Old 09-19-2012, 10:31 PM
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If you want a manual, MMR900(moded tko600) or a t56.
For auto. If you drive it on the street a lot then go with a TH-400, maybe add a gear vendors overdrive. If you are on the track more then powerglide.
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post #26 of 29 Old 09-19-2012, 10:45 PM Thread Starter
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can u drive on the street with a powerglide. what type of th400. i know nothing about auto's. transbrake or anything else.

92 white lx notch, FS dart 408, bw s480 turbo, 1&2 th400, super vic, afr 225,csu750, custom 1 7/8 headers, dual tial 38mm wg
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post #27 of 29 Old 09-19-2012, 11:02 PM
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can u drive on the street with a powerglide. what type of th400. i know nothing about auto's. transbrake or anything else.
I have a bunch of buddies that run powerglides on the street.
As for a TH400 any reputable builder out there should work. Get a Trans brake and a locking converter and you will have one fun street car.
The trans brake help build boost on the line quickly.

The locking converter will help keep heat down while cruising and transfers more power to the ground when locked. With the power level you will be at once the converter is locked you will prob pick up over 100 RWHP when locked.

With your power level things happen very FAST. It will be a challenge to keep an eye on everything while banging gears. Though fun, it will be a lot slower, on the street and the strip. More consistent too.
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post #28 of 29 Old 09-19-2012, 11:06 PM Thread Starter
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thanks for the info guys. i'll prob do some more research. is the th400 in the drivetrain section any good for sale. maybe i could pick that up

92 white lx notch, FS dart 408, bw s480 turbo, 1&2 th400, super vic, afr 225,csu750, custom 1 7/8 headers, dual tial 38mm wg
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post #29 of 29 Old 09-19-2012, 11:33 PM
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thanks for the info guys. i'll prob do some more research. is the th400 in the drivetrain section any good for sale. maybe i could pick that up
Looks like a good deal. Just make sure you get the paper work and call them to confirm the build. Ask them what it was built to handle.
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