Sorry, it may sound dumb but I dont know this.Im thinking of doing the 3.8 GN swap on my V6 camaro. and I was wondering if the Buick Transmission is going to hook up nicely under our cars or is there need of cutting or spacing? all the info is appreciated

 

I was looking at the Buick and Gm transmissions and was wondering if I could use the 4L60-E transmission in this 86-87 3.8 turbo swap? what transmission did the Turbo T/A have? anyone know this please help guys.

 

4L60e are electronic and have to be run by a computer. The 86-87 Grand nationals didn't have computerized trans so that might be a problem. I have a 91 4L60 for a V6 Camaro if your interested in it. Make a good deal on it. Ran good til car was totaled. I bought the car for the wheels and 3:42 rearend. brian@bharris.org


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91 Camaro RS 5.0L Black Convertible 700R4
** Added so far **
*GM Wonderbar,Alston SFC's,spohn LCA's and Panhard rod
*Turbo City Inj Spacer
*Dual Snorkel Air Filter
*March Performance Pulleys
*GM 3.42 Gears with OEM Zexel POSI
*Edelbrock headers
*3" High Flow Cat
*3" Dynomax Exhaust
*Walbro 255 lph Fuel Pump
***Future 330hp Vortec Crate with LT4 hotcam and 454 TBI

 

I'm pretty sure that the TTA used the 200-4R tranny. I don't know if it was because of size (wouldn't fit the tunnel?) reasons, or if it's because of the smaller difference in ratio between 1st and 2nd gear. The 200-4R might've "outperformed" the 700r4 trans in acceleration tests...??


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-Tom P (Hot rodded 1986 Firebird 2.8l)

 

The 200-4R is better suited to keeping the Turbo spinning once it starts.

 

Is it a bolt-pattern issue too? Does the 700R4 even fit the Buick V6?

 

No it does not fit the BPO block but that is not the issue. The 200-4R has a closer gear ratio pattern than the 700 does and it would likely drop the turbo off after the 1-2 shift if you tried to use it.