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Oct 27, 2008 | 05:02 PM

Cents

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From: OK

Best Trans

Will a 700r4 trans bolt to an ls3?...is that the best trans to hold 500 hp?

Oct 27, 2008 | 05:52 PM

Bo185

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Quote:

Originally Posted by Cents

Will a 700r4 trans bolt to an ls3?...is that the best trans to hold 500 hp?

Yes and a 6l90!

Oct 27, 2008 | 11:11 PM

Rodder

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700R4 is crap. 4L80E if you have room for it...

Oct 27, 2008 | 11:17 PM

Crowder

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th400, what more can you ask for?

Oct 27, 2008 | 11:58 PM

cherryelky305

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Quote:

Originally Posted by Crowder

th400, what more can you ask for?

overdrive? a built 4l60e or a 4l80e would work great. whats your application?

Oct 28, 2008 | 08:13 AM

Stu Cool

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Quote:

Originally Posted by cherryelky305

overdrive? a built 4l60e or a 4l80e would work great. whats your application?

Good question, how do you plan to use the car?

Pat

Oct 29, 2008 | 06:42 AM

Cents

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From: OK

Its going in a 2000 pontiac firebird...Its going to be my everyday driver that i take to the drags on some weekends...so overdrive is a must.

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Oct 29, 2008 | 01:00 PM

Bo185

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From: Beebe, Arkansas

Quote:

Originally Posted by Cents

Its going in a 2000 pontiac firebird...Its going to be my everyday driver that i take to the drags on some weekends...so overdrive is a must.

The 6l90 has a nice first gear and double over drive. And will work with the later Gen IV LS3. So you could have a conservative rear end ratio of 3.55 and still have a good launch as well as good fuel mileage.

First 4.03
Second 2.36
Third 1.53
Fourth 1.15
Fifth 0.85
Sixth 0.67
Reverse 3.06

Oct 30, 2008 | 03:29 AM

#10

89LS1RS

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with a 4.03 first gear, you could run a 2.73 gear and still get a good launch. 4l60es and t56 are around 3

Oct 30, 2008 | 03:59 AM

#11

saad94

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I like 700r4 no elect.

Oct 30, 2008 | 09:53 AM

#12

Rodder

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Quote:

Originally Posted by saad94

I like 700r4 no elect.

I've toasted the 3rd gear clutches in 700R4's too many times, and the gear spacing between 1st and 2nd SUCKS. 4L80E, TH400, or TH350.

Since it's going in a 4th gen daily driver, I think 4L60E would be the first choice since it's a bolt-in. I think the 'E solves the 700R4's 2->3 valvebody problems--does anyone know for sure? On the other hand the gear spacing still sucks compared to a 4L80E or TH400.

Oct 30, 2008 | 05:26 PM

#13

Cents

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I also want it to be an automatic transmission so would i have to build the 4l60e or 700r4 to hold 500hp???

Oct 30, 2008 | 06:02 PM

#14

b005td

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it totally depends on ur budget

Oct 31, 2008 | 12:33 PM

#15

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Quote:

Originally Posted by Rodder

4L60E is the same internals as the 700 just has the electronic valve body, so it still has the weak 3rd gear drum and the big 1st to 2nd drop. The 4L65E has the sun gear that has 5 internal gears making it slightly stronger, but the 65E still has the bad 1st to 2nd drop. The 4L65E is still not made to handle any real torque, abuse, Nitrous, or a heavy car. Go 4L80E for strenght or hang an OD on a TH400.