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Old 03-10-2013, 01:32 PM
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best transmission for street car

I am getting info on a building a good hot street car and I was wanting to know what transmission would be best for a 400 sbc with around 450 hp I was thinking abt a 350 or a 400 or maybe a 700r4 or a manual it would be in a late 80s early 90s Camaro or firebird thanks
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Old 03-10-2013, 04:32 PM
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what do you realy want, auto or stick? Money still will limit what quality of tranny. But if your going for that amount of ponies, money shouldn't matter, because you've got alot invested in motor and everything else, so don't try to save that extra dime. When i was younger, i always went for cheap, because i didn't mind tearing things up and rebuilding things. Now that i don't have that much energy, i want things to last. Loved 4-speeds, now i love automatics.
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Old 03-10-2013, 09:32 PM
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200 4R best choice for racing automatic

Many of my friends and I are using a beefed-up 200 4R in our Buick Grand Nationals and Buick Regal T's.

Trans is physically the same size as a turbo 350, has a 2.74 to 1.00 1st gear ratio rather than the 3 point something the 700R4 uses. Overdrive in 4th gear is .68:1.00 (32% rpm reduction) and only needs a TV cable and no computer.

Trans can be modified in stages to handle upwards of 1,000 HP.

A bunch of us are putting way over 600 hp to the rear wheels and one of our cars ran 10.07 secs @ 138 MPH.

Do your homework on this. Google the internet for 200 4R for racing.
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Old 03-12-2013, 05:36 AM
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Turbo 400 with a 2.75 first gear set and a 2 series rear end ratio....

I have this set up with a 2.56 rear end gear and it is much better then an OD transmission in my opinion.... Good luck....
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Old 03-12-2013, 06:15 AM
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Do you want overdrive, or just a bar hopper?? I use a T350 with low ratio low gear set, and beefed up bushings/sprags, and have used this trans behind several hot small blocks (around 500 hp) without issues. Right now it has a manual valve body and 3500 converter. They are light, parts plentiful, but you need a deep pan, brass filter screen ( high flow), good cooler.....and i dont hesitate to wind the motor up and hit it hard.....
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Old 03-12-2013, 08:04 AM
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I have a 81 Pontiac firebird with a 350 transmission with a 3500 stall and a shift kit it's a great transmission but I like od transmission because I want to drive it on longer trips I don't know much about the 200r4. what would be a good manual transmission I never been able to find any manual transmission around without them being sky high thank
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Old 03-12-2013, 12:16 PM
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Trans for '81 Pontiac

What does you budget allow and what price do you consider to be sky-high?
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Old 03-12-2013, 12:19 PM
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Quote:
Originally Posted by BigMo View Post
Do you want overdrive, or just a bar hopper?? I use a T350 with low ratio low gear set, and beefed up bushings/sprags, and have used this trans behind several hot small blocks (around 500 hp) without issues. Right now it has a manual valve body and 3500 converter. They are light, parts plentiful, but you need a deep pan, brass filter screen ( high flow), good cooler.....and i dont hesitate to wind the motor up and hit it hard.....
I have 704 HP at the crankshaft. How long do you think a TH350 will live behind it? That is why I am using a beefed up and hardened 2004R.
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Old 03-12-2013, 09:24 PM
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Beefed-up 200 4R for high performance

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Originally Posted by jrbaker View Post
I am getting info on a building a good hot street car and I was wanting to know what transmission would be best for a 400 sbc with around 450 hp I was thinking abt a 350 or a 400 or maybe a 700r4 or a manual it would be in a late 80s early 90s Camaro or firebird thanks
Log onto turbobuick.com and observe many V-6 Buick Grand Nationals running in the high nine second range with a 200 4R automatic.

Check out Extreme Automatics Where winning is easy for several stages of 200 4R trans starting out at rating of 500 HP for $1,495 up to 1,000 HP at cost of $2,995.

Being a 4-speed overdrive automatic it will result in a 30% to 40% increase in gas mileage.

I run my turbo Buick into the low tens with this transmission, and I drive it to the drag strip and back home. Track is 112 miles from home and it costs me a quarter of a tank of fuel each way. Car also has cold air conditioning.
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Old 03-12-2013, 09:27 PM
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Bonneville on the drag strip

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Originally Posted by Bonneville462 View Post
Turbo 400 with a 2.75 first gear set and a 2 series rear end ratio....

I have this set up with a 2.56 rear end gear and it is much better then an OD transmission in my opinion.... Good luck....
Do you race at Maple Grove? It looks like you have had it to the track from the photo. What is your 60-ft time, 1/8 mile and 1/4 mile ET and MPH?
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Old 03-12-2013, 09:57 PM
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I wish I could get my hand on a Buick grand national. I found a 200 4r for 150 I would rebuild any I got. I have a 350 turbo in a motorhome same one s the motor and I am wanting to know if it would work or would it have to low of gears?
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Old 03-13-2013, 05:59 AM
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Do you race at Maple Grove? It looks like you have had it to the track from the photo. What is your 60-ft time, 1/8 mile and 1/4 mile ET and MPH?
Dave, the car in my aviator was from the 60s , it was called the Alaskan and is long gone.. It did race all over the country back then...

I haven't had my car to the track yet, this summer will be the first time.. It has a 462, ported 6x8 heads, RA4 cam. Both the motor and trans was built by Cliff Ruggles from the Quadrajet fame..
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Old 03-13-2013, 11:02 AM
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If you want overdrive, then go with the 200R or the 700R series. Or add the computer for the L460/480E types. Prepped T350 will go 600hp, T400 will go much higher, with right output shaft into 900+
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