so i cammed my 4.3 almost a year ago and have yet to get it tuned. well actually i cammed it, sold it, traded my tahoe for it back, and now tommorrow im goin down to have it tuned. ive never seen any dyno numbers for a cammed 4.3 so i figured id post them up when i get em. im lookin for at least 220 hp to the tires. should be over or almost 300 tq. results tommorrow

 

Curious of the results...

 

me too

 

What cam? My 224/230 with did 205.

 

 

low dime, cam specs are 215 int /220 exh dur @ 050 lift, 270 int /276 exh adv. dur, intake lift .500 exh lift .510, 114 lsa.

 

i got it tuned by doc at efi alchemy. results.... well.... she put down 169 hp and 190 tq. i know right. alittle on the low side i think. so we started lookin around at it and came to the conclusion that one of my spark plug wires has got to be bad. they tuned a stock 4.3 with a cat back and it made 150. we even changed the plugs between pulls and that was 10 hp. lot left on the table. so im changing my wires, and headin back for some street tuning and more dyno tuning. we just ran out of time. they close at 8. i left at 9:45. even still the truck feels a TON better. efi alchemy is a great shop. doc is the man.

 

How much timing are you running now? What is you AFR?

I made 163 with a tune and flowmaster.

 

i dont know what he has the timing set at. i was watching the afr through out the run. it was about 12.

 

wait... the guy before... why on earth would he get a dyno tune for a stock 4.3?