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My 6.5 has a TH700R4 which is a mechanically controlled 4L60E.
Works fine.
So no you don't have to have a 4L80E.
Most turbo 6.5L engines have the TH400 or 4L80E.
My 6.5L has a standard half ton 10 bolt rearend.
Has worked fine for well over 250 thousand miles.
An all cast iron 350 weighs about 600lb.
That 6.5L cant weigh more than 700.
The turbo and turbo manifolds would add at least another 50lb, so is 750lb with or with out the turbo?
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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