i've been wondering about my 8.1 big block in my 03 chevy silverado for one just how powerful is it compared to fords and dodges gas engines and 2 how much power does the allison trans add to it if any and what are the best parts to start getting if i wanted to add more horse and toque making my truck one of the baddest around here well were i live atleast?

 

Exactly how does a transmission ad power to an engine ?

 

i heard the transmission can add more torque thats why i was asking </P>


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There are many factors to the torque you can expect to see at the wheels but none of which would have an effect on the "power" produced by the engine. The thing to remember is that if you change any of the gearing to get more torque upon take off then you would be giving up the higher speeds and gas milage that your vehicle would currently offer for something that could be a lot less. However the transmission does play a large part in the torque if that is your main question as does the torque converter and rear end. Is your truck a 4x4? If so I would be very careful in messing with gear ratios because it is very important that the front and rear axles rotate at the same ratios.

 

The only reason to change over to the Allison trans would be if you towed or hauled a LOT of weight on a regular basis. Very stout, rugged, torquey (is that a word) trans, but as the man said, geared lower, hence lower top speed. Want more speed?
Headers, exhaust pipes, MSD ignition box, plugs & wires, cold air intake
Do that and we'll start on the expensive stuff.