Converting 03-04 auto to 6-speed - Chevy SSR Forum
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  • 1 Post By Stlhotrod
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post #1 of 9 (permalink) Old 04-15-2019, 05:59 PM Thread Starter
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Converting 03-04 auto to 6-speed

How hard would it be to convert an 03-04 over to a 6-speed? Just thinking out loud if I were to purchase one and wanted to convert it if it was worth the cost.
Has anyone done this before?

Thanks,

Ayesijuan
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post #2 of 9 (permalink) Old 04-15-2019, 06:02 PM
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My SSR:
2004 in Black and now 2005 in Black, what a pair
Not sure it will fit. They changed the floor pan on the 05/06 trucks so the manual trans would fit. Easier to start with an 05/06 than to try to make it fit in the 03/04.
Plus other things to swap are the rear end, clutch and brake pedal, console shifter plate, electronics could be an issue for the traction control from the automatic.
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post #3 of 9 (permalink) Old 04-15-2019, 08:22 PM
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Transmission Conversion

Stlhotrod makes good points about the challenges of such a conversion. A while back Greg Ducato and I corresponded about going the opposite route- converting a six-speed to an automatic. The conclusion was the there were so many changes required that it would be easier to find a truck with the transmission you want rather than attempt a time-consuming and costly conversion. Maybe if only one transmission were available it would make for an interesting challenge project but with both types available we concluded it's better to pick an SSR with the one you want.
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post #4 of 9 (permalink) Old 04-15-2019, 11:40 PM
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Quote:
Originally Posted by Ayesijuan View Post
How hard would it be to convert an 03-04 over to a 6-speed? Just thinking out loud if I were to purchase one and wanted to convert it if it was worth the cost.
Has anyone done this before?

Thanks,

Ayesijuan
If you want to get a taste of what is involved, a starting point would be to look at a conversion of a TBSS to a manual transmission. Here are two LONG documented attempts. The second one was successful. A TBSS is closer to an 05/06 SSR so this doesn't even cover the differences that you would face with an 03/04 SSR.

https://tbssowners.com/forums/member...ns-thread.html

https://tbssowners.com/forums/4l70e-...6-install.html
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post #5 of 9 (permalink) Old 04-16-2019, 03:59 AM
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My SSR:
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Also the '05&'06 I believe the engine was offset, moved sideways.

Often wrong...... but never in doubt.
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post #6 of 9 (permalink) Old 04-16-2019, 07:53 AM
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My SSR:
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Quote:
Originally Posted by ZsSSR View Post
If you want to get a taste of what is involved, a starting point would be to look at a conversion of a TBSS to a manual transmission. Here are two LONG documented attempts. The second one was successful. A TBSS is closer to an 05/06 SSR so this doesn't even cover the differences that you would face with an 03/04 SSR.

https://tbssowners.com/forums/member...ns-thread.html

https://tbssowners.com/forums/4l70e-...6-install.html
I had a few conversations with Brandon during his project and I give him MAJOR props for seeing that project through!!

"Strive for perfection in everything. Take the best that exists and make it better. If it doesn't exist, create it. Accept nothing nearly right or good enough."

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post #7 of 9 (permalink) Old 04-16-2019, 07:56 AM
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My SSR:
05 6 sp. with 4.56 gears, ZR1 clutch, Edelbrock intake, Lunati cam, Crane rockers, C6 modified pan
Quote:
Originally Posted by xoxoxoBruce View Post
Also the '05&'06 I believe the engine was offset, moved sideways.
Bruce, all the model years have the same engine offset - just part of the trailblazer chassis that was made to accommodate AWD.
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"Strive for perfection in everything. Take the best that exists and make it better. If it doesn't exist, create it. Accept nothing nearly right or good enough."

Sir Henry Royce, of Rolls-Royce
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post #8 of 9 (permalink) Old 04-16-2019, 12:08 PM
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My SSR:
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Iíve got all the parts, no bell housing,drive shaft or transmission but the bones, pedals, OEM clutch, actuator, shift plate, chassis, rear endand can cut the floor pan out to accommodate it🤑👀🤭 What an interesting conversion. Why not buy the complete chassis! Even have the new six speed cluster.
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post #9 of 9 (permalink) Old 04-16-2019, 01:32 PM
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My SSR:
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Hey! If ya got a nice shop set up, some automotive experience, a boat load of money and love a HUGE project, go for it! Deep down inside we'd all love to see someone tackle something like this even though it makes no logical sense what so ever.
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