GM Inside News Forum - View Single Post - Upgrading from a turbo 350 to a turbo 700

**nailhead425** · 08-20-2005, 02:00 AM

The 700 is even longer than the TH400. It will also require the drive shaft to be shortened. The good news is that it uses the same yoke as the TH350. You'll need the correct bracket and linkage on the carb for the 700 TV cable. This is critical to proper operation. You can use your existing computer to lock up the 700, by dropping the pan and connecting the o/d lock up wire only. Normally, it will lock in 2nd, 3rd, and o/d. It isn't needed, but unless you cruise at 2000rpm or higher with a stock converter, you'll need the o/d. Also make sure the cooler lines and trans cooler are very clean.

My advise? Sell the 700, rebuild the 350C.

08-20-2005, 02:00 AM	#4 (permalink)
nailhead425 GMI Staff Member Join Date: Jan 2005 Location: 85541 Drives: 6-GM, 1-Dodge, 1-Jeep, 1-Polaris, 1-Yamaha. Posts: 2,784	Re: Upgrading from a turbo 350 to a turbo 700 The 700 is even longer than the TH400. It will also require the drive shaft to be shortened. The good news is that it uses the same yoke as the TH350. You'll need the correct bracket and linkage on the carb for the 700 TV cable. This is critical to proper operation. You can use your existing computer to lock up the 700, by dropping the pan and connecting the o/d lock up wire only. Normally, it will lock in 2nd, 3rd, and o/d. It isn't needed, but unless you cruise at 2000rpm or higher with a stock converter, you'll need the o/d. Also make sure the cooler lines and trans cooler are very clean. My advise? Sell the 700, rebuild the 350C. __________________ Who is John Galt? -