85 firebird v6 switching to chev 350 with turbo 350 tranny will it fit?

 

as far as i know all gm auto trans will fit, the th350 for sure will fit. you'll need the 9" tail shaft to keep from having to change the drive shaft. by a b&m pn 30299 for about 80 dollars and you won't have any more problems than doing a r&r on the stock trans.

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ICON Motorsports
1st & 3rd
MM Black Diamond 538 F&AM

 

Yes but personally I think you are better with an O/D such as a 700, properly built of course.

 

Depends what you want it for and what your rear end gearing is.

For the street a 700R4 is fine but it's heavy and has poor gear ratios for racing.

If you have non performance gears in the rear end, 3.45, 3.73, 4.10 etc then a TH350 will do just fine on the street. It did for decades in older cars.

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87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block (times are for the current engine)

Best ET on a time slip: 11.447 altitude corrected to 10.99
Best MPH on a time slip: 119.42 altitude corrected to 124.86
Altitude corrected rear wheel HP: 493
Best 60 foot: 1.586

Racing at 3500 feet elevation with a typical race day over 5000 feet density altitude!
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87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley