[johnboy9389]

im trying to put a small block chevy 5.3 in my 85 bonnie i would like to know wat size stall and gears should i go with it came out a 2004 tahoe

[DR132]

is this a stock engine or are you planning on building it at all? really depends on what you want to do with it...

[cobalt327]

Originally Posted by johnboy9389

im trying to put a small block chevy 5.3 in my 85 bonnie i would like to know wat size stall and gears should i go with it came out a 2004 tahoe

Also are you planning on using an OD automatic, or not? This will have a huge bearing on the rear gear ratio...

Anyway, assuming the stock 5.3 and using the tranny from the Tahoe, the stock converter will be tight- but that's not necessarily a bad thing for a stock engine, especially when you consider the cost for a good torque converter opposed to using the stock TC.

If max acceleration is your goal, there will be something to be gained by a slightly looser TC and =/>4.11 rear gears. The stock TC will have a lower stall speed in your lighter Bonnie, especially if the gears are lower (higher numerically).