Tci street fighter tranny 700r4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skidoo · 10-17-2022, 11:06 PM

I have a 383 in a c10 2wd. Just installed a 700r4 tranny. When driving it when it shifts from 1st to 2nd gear i get wheel chirp. Is this normal with this type of trans?

**Steeveedee** · 10-17-2022, 11:10 PM

Strikes me as a performance trans characteristic...firm. I've seen where the upshift took over a second, which to me meant clutches were getting toasted. Ask TCI what it should shift like. I personally like a chirp (at a minimum) on upshift. When I took the shell of my truck, with the stock 400 trans, it spun the tire going into second. It's a feature, not a bug. YMMV

**Accelo** · 10-18-2022, 12:46 PM

You didn't mention the throttle setting when the tires bark.
At full throttle I would consider this normal for a performance transmission.
Especially, with the light weight on the rears, in a truck application.
At part throttle it is nothing but annoying.
You might consider changing out the servo for a less aggressive one if it's at part throttle.
Be cautious as any changes could void your warranty.
Cheers

ls1nova71 · 10-19-2022, 10:44 AM

I had a TCI street fighter 700r4 in my Nova years ago. It was the same, couldn't keep it from chirping the tires on the 1-2 shift. Even at low speeds. Was fun when there's a cop beside you... I got to where I could just let out of the throttle a bit just before it shifted and it wouldn't do it. It eventually broke it's self, and I had a trans shop fix it but it didn't last, so I had to get another trans to have rebuilt, they said the case was bad. Never had any troubles out of that one.

Bigdav160 · 10-20-2022, 09:05 AM

I bet they blocked the 1-2 accumulator circuit on purpose.

**Steeveedee** · 10-20-2022, 10:38 AM

Taking the spring out of the accumulator is an option in the Trans-Go kit, iirc. It's been 40+ years since I put one of them in a vehicle.

**HO455** · 10-20-2022, 02:31 PM

I'd look at this thread. It seems to be a wealth of knowledge on 700R4s.

http://67-72chevytrucks.com/vboard/s...d.php?t=634121

Good luck and let us know what you find.

10-17-2022, 11:06 PM	#1
skidoo Registered User Join Date: Mar 2015 Location: alberta Posts: 23	Tci street fighter tranny 700r4 I have a 383 in a c10 2wd. Just installed a 700r4 tranny. When driving it when it shifts from 1st to 2nd gear i get wheel chirp. Is this normal with this type of trans?

10-17-2022, 11:10 PM	#2
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,708	Re: Tci street fighter tranny 700r4 Strikes me as a performance trans characteristic...firm. I've seen where the upshift took over a second, which to me meant clutches were getting toasted. Ask TCI what it should shift like. I personally like a chirp (at a minimum) on upshift. When I took the shell of my truck, with the stock 400 trans, it spun the tire going into second. It's a feature, not a bug. YMMV __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

10-18-2022, 12:46 PM	#3
Accelo Senior Member Join Date: Mar 2015 Location: washington Posts: 2,299	Re: Tci street fighter tranny 700r4 You didn't mention the throttle setting when the tires bark. At full throttle I would consider this normal for a performance transmission. Especially, with the light weight on the rears, in a truck application. At part throttle it is nothing but annoying. You might consider changing out the servo for a less aggressive one if it's at part throttle. Be cautious as any changes could void your warranty. Cheers

10-19-2022, 10:44 AM	#4
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,119	Re: Tci street fighter tranny 700r4 I had a TCI street fighter 700r4 in my Nova years ago. It was the same, couldn't keep it from chirping the tires on the 1-2 shift. Even at low speeds. Was fun when there's a cop beside you... I got to where I could just let out of the throttle a bit just before it shifted and it wouldn't do it. It eventually broke it's self, and I had a trans shop fix it but it didn't last, so I had to get another trans to have rebuilt, they said the case was bad. Never had any troubles out of that one. __________________ My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html

10-20-2022, 09:05 AM	#5
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: Tci street fighter tranny 700r4 I bet they blocked the 1-2 accumulator circuit on purpose. __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

10-20-2022, 10:38 AM	#6
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,708	Re: Tci street fighter tranny 700r4 Taking the spring out of the accumulator is an option in the Trans-Go kit, iirc. It's been 40+ years since I put one of them in a vehicle. __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

10-20-2022, 02:31 PM	#7
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,382	Re: Tci street fighter tranny 700r4 I'd look at this thread. It seems to be a wealth of knowledge on 700R4s. http://67-72chevytrucks.com/vboard/s...d.php?t=634121 Good luck and let us know what you find. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377



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