Does anyone know the stock horsepower/torque for an 84 300ci flat-six?

 

If you mean '84 300 Inline 6
Net Horsepower: 115 @ 3000rpm
Net Torque: 223 lbs.-ft. @ 1600rpm

 

is it the torque that makes them pull so good
mine will throw you in your seat
it has 3.55's and a 4sd w/granny

 

That and where the power is at, not all but most V-8's especially small blocks peak at 4,000-6,000 rpm.

 

oh
wow much would betting rid of the cat add? in hp

 

Not much, probably around a 3hp gain.

 

However, adding headers, removing cat and a good muffler around 8-10hp.

 

what about headers cam intake and 4bbl?

 

Depending on how aggressive of a cam 40hp+

 

My Chilton manual specs 120 SAE net HP @ 3200 rpm, 245 ftlb @ 1600 rpm, 8.4:1 compression ratio.

FYI: The 1973-74 300's are rated at 168hp @ 3800 rpm/ 150 ftlb for the same compression ratio. Unless the cams were very different on the 73-74 models, that 48Hp loss is due mainly the the smog gear. The cam specs I've found are the same for all '73-'88 300's, so it shouldn't be a factor.

First thing I did to my 300 was give it a free exhaust and ditch the air pump. Didn't seem that alone gave 40+ horses, but there was noticable inprovement. Next was a 4bbl and EFI factory headers, and that provided a substantial boost.

 

That 168hp is gross horsepower in the mid '70's they switched to net horsepower. There were slightly different net hp ratings for the '73 to '85 300s 101, 115, 117, 120. Torque remained 223 lbs.ft. This is from the Standard Catalog of American Light-Duty Trucks. Not at all saying anything you posted is wrong just stating what the book says.