Hello, new here and read already a lot and final y decided a performance upgrade for my van.
i converted it into a Motor Home and added quite a bit of weight. Therefore i am lookIng to get out a Little more torque of the Engine.
upfront i have to say, i will stay with stock inyection, and Budget is tight.

plan:

Comp camshaft 35-255-5
long Tube headers
high Flow air Filter, maybe intake if i can find something that fits

questions:

i considered already lifters for the cam. Do i really Need Rocker Arms, Springs, etc for this cam?
what is the minimum needed ( no Overkill )

where do i place the oxígen sensor?

does anybody have a recomendation for a budget intakte that fits?

what can i expect out of this mod in terms of performace?

thanks a lot in advance for any answer!!!!

@ engine has only 60k miles on it

 

I don't see where you stated what year van you have? What wheel base and how much weight do you think you have added? What transmission and what is the rear axle ratio? I have a 88 E150 138 wheel base conversion van with a 5.0 and a AOD transmission. I am in the process of converting it to a camper but i am keeping it simple so don't plan to add a huge amount of weight. I would love to have a 5.8 instead of the 5.0.. Instead of modding the engine I decided change the gear ratio from the stock 3.55 to 3.73 and while it will never spin the tires, it did make a noticeable difference and seems to be a good match for my van and driving style.

Depending on how much weight you have added, you might want to check your max axle weight along with thinking about changing the gear ratio. That might do more for you then just modding the engine and be cheaper also. Tire size is another thing to check. If you use over sized tires then you also reduce your power.
I
If modding the engine is what you want to do then there are plenty of guys here that hopefully will chime in and give you advice and answer your questions.

I glanced at your profile and it says you have a 1989. how long have you owned it and how do you know then engine only has 60k on it? When i bought my 88, the guy tried to tell me that it only had 5 k on it since the odometer only goes to 99,999.9 and rolls over. Just asking because if it truly only has 60k on the engine then IMHO spending money on engine mods would be fine but if it is 160k then you might want to wait till you refresh the entire engine. You know your van better then i do though!

 

What year is the van and motor?

 

Thanks for your thoughts. I’ve already been there. My weight is all finished passengers counting, just 400pounds under gvwr.
tranny is c6. So with no overdrive I think its not a Good idea to travel in high revs all the time
at relative los Speed. Changing tranny would also not an Option without More engine Power because i would Never get into Overdrive. Only downhill.
Therefore desicion is More Power.

 

Thanks for your answer.
Van is 89 so is engine. All Original. And
i forgot to answer, i belive the 60k miles because of all Original and and in very Good shape. Especially engine. Had compression tested, all Cylinders the same. Although you could realize long standing periods from tires and other hints

 

So 8000lbs give or take? That is pretty heavy.
It's all relative, a boat engine may run at 4500rpm for hours at a time without issue, these engines are more than capable of doing that but of course the fuel milage is not pretty.
You would be surprised how much OD would be used, but the only suitable OD auto that is a bolt in(E4OD) requires computer control so it's not a simple swap.
There are numerous cams that could be used here and all will proved a nice power boost, the Crane 444232 or that Comp 35-255-5 are good options, there are similar roller cams too, those will cost more to use but they eliminate the possibility of a wiped cam lobe which seems to be more common these days. I'd suggest you not worry too much about the intake side of the motor but do replace the whole exhaust system. I like longtubes but for ease of install shorties would be a good option here and those actually outperform longtubes at midrange RPMs which just happens to be right where your motor will spend a fair bit of time.

 

Thanks again for tour reply. Do you have any idea which roller cam would be a fit for stock
efi?

 

The comp cams 35-512-8 COMP Cams 35-512-8 COMP Cams Xtreme Energy Camshafts | Summit Racing

 

thanks!!
any other Things to be considered with this cam? (Rods, Springs….) or could this be a straight bolt on

 

It requires roller lifters, shorter pushrods, and a steel distributor drive gear, that is what makes switching to a roller cam so expensive.

 

Just looked at the cam. Says its for 5.0 engine. Mine is 5.8w. Dies ir fit anyway?

 

Is ist really such a big deal difference, or a really long Term issue to put in a tappered cam?
otherwise i would stay with the 352555

 

Yes those two motors use the same cams.

 

Flat tappet cam failure usually happens very soon after install, so no it's not a long term thing.

 

Could you please helps me with the Rest of the Need es parts? (Before ordering any wrong)thanks!!!