i want to swap to a bigger cam in my 93 F150 5.0. is there any tuning involved? what would i have to do after the cam install to get the truck running right and not too lean?

 

The only thing to do to get it to run is set the timing. As far as tuning, that all depends on how big of a cam you put in.

 

If your truck is speed/density control, you need to be careful about what cam you select. Cams with significantly more overlap can give strange readings on the MAP sensor and confuse the processor. Look for a cam that is specifically described as EFI compatible.

 

what would be a good cam for my application? i was looking at a E303 cam with 1.6 roller rockers but the operating range is too high for what i'm looking for. i want something not too aggressive but with a little more punch when i hit the throttle. nothing too crazy. i plan on keeping the stock bottom end and upgrading to a cobra intake, and maybe in the future GT40 heads, depends how much the cam sets me back

 

The E303 is the same as a Crane 2040 and it is not the right cam for a 5000 lb. truck. You need something with way more mid-range.

The head and intake upgrade (or lack thereof) will determine what cam you should use. If you add GT-40 heads and intake plus a bigger cam, your stock 19# injectors may not be big enough.

 

yeah thats out of the question. i was looking on crane cams. they have quite a few hydraulic cams. i already have full exhaust, cold air intake, and a MSD distributor. i am definitely getting the cobra upper and lower intake and throttle body. the GT40 heads are a possibility but not sure how much money i'll have to play with so we'll exclude that for right now. what lift and duration would you recommend?

 

Which firing order does your engine use?
Is your EFI speed/density or mass air?
Is your engine roller ready?

 

i'm not quite sure off the top of my head. it is a stock 5.0L non HO. it is speed density. and no its not ready but i plan on getting new roller rockers, valve springs, push rods, the whole nine yards when i tear apart the top end.

 

"Roller ready" means ready for conversion to a roller cam; it's got nothing to do with roller rockers. AFAIK a '93 should be roller ready just like it should use the 1-3-7-2-6-5-4-8 firing order but the answer to those questions will determine what cam you can use.

 

ok you have me confused. i've only swaped cams in gen 1 chevy small blocks and those you just shove the new cam in and go. i've never heard of being "roller ready". please excuse me but could you please explain

 

Older Ford small-blocks will only accept flat tappet cams; newer ones whether they have roller or flat tappet cams installed are machined for the roller cam follower brackets and will accept either roller or flat tappet cams.