Just finished the install of the 350 Chevy HO crate engine in my 1988 Silverado. Wow! What a difference! Still need to tweek the carburetor, but otherwise I'm impressed. I am using the original TH 350 with this engine and kind of interested in how long it will last. I'm told the TH 350 is the toughest of the usual transmissions. Time will tell. Converted the throttle body fuel injection system to carburetor...wasn't bad at all. Need to work some on tuning the Holley carb though.