pi intake and cam swap

[98bluevert]

ok i'm tired of searching on here. I'm getting ready to do the swap. I know it is suppose to add 30ish rwhp. What about tq numbers.

Do i need a tune or can it wait till after i headers, and a couple other things?

Also what should i run a the track: 98 Vert, 4.10's, MM subframes, Mac off-road prochamber, TF upper intake, ET streets. 750 ft above sea level


Last time i ran at the 1/8th mile i only had gears and street tires. couldn't hook up very well and posted a 9.30 with something like a 2.3 60ft.

Could i see mid to low 8 sec passes with the mods listed above or does anyone know what 1/4 mile passes would be close to.

Also what are the Tq number differences between PI intake, cams, and heads, to just intake and cams

 

[98bluevert]

BUMP.

Anybody have any ideas

 

[DropTopPony]

you should gain 15-25rwtq with the intake and cam swap....you don't need a tune imediately but it will be best to get one as soon as you can.

 

[COramprat]

I gained 10 with the intake and 30 with cams but I have Comp 262's. My guess would be in the 25-30 range. That will get you 4-5 tenths at the track.

 

[d98gt]

I'm curious on the tune question as well. I'll be getting my cams installed this month (PI cams) and then will be doing the PI intake in early December.

I would have liked to do them both at the same time, though the intake install suggests waiting atleast 24 hours for the RTV, so i'll do that on a weekend when I can afford the down time. Plus I have already switched the intake manifold once before so I can do it myself.

so.. tune or no tune for a basically stock car w/ pi cams (then pi intake later)?

 

[LI98GTStang]

I still have my stock tune post PI cams and intake with no problems. Had it dyno'd and the A/F numbers are more than acceptable.

 

[Pennywise2]

People how are doing the PI intake and camshaft swap
should consider a dyno tune to see where your A/F ratio
is at.I bet after the swap you will run rich.

 

[tomustang]

People how are doing the PI intake and camshaft swap
should consider a dyno tune to see where your A/F ratio
is at.I bet after the swap you will run rich.

it's fine, never had a problem

 

[d98gt]

alright thanks for the info LI

 

[Pennywise2]

it's fine, never had a problem

That's great to hear Tom.
Did you ever get a new steering wheel for your Cobra?

 

[Dusstbuster]

People how are doing the PI intake and camshaft swap
should consider a dyno tune to see where your A/F ratio
is at.I bet after the swap you will run rich.

Would it be rich or lean? The PI cam/manifold swap's basic premis is that the stock NPI parts don't flow enough air whereas the upgraded parts flow a bunch more air...wouldn't that have more of a tendancy to run lean or would the ECU overcompensate and run it rich?

 

[98bluevert]

Thanks for the all the info. does anybody have any links to dyno charts with the swap done.

Also anyone got any heads up pointers for installing the cams, i have done the npi intake with new crossover so I don't need pointers on it.

 

[NPIGT]

I did the swap around April this year and I felt a considerable difference. I used a cam chain retention tool to swap the cams out. It worked good, and dont over torque the cam cap bolts because they are $5 a piece and you have to buy them in sets of 4 . I laugh now, but I wasnt happy then. You will feel results. Good luck.

 

[LI98GTStang]

Thanks for the all the info. does anybody have any links to dyno charts with the swap done.

Also anyone got any heads up pointers for installing the cams, i have done the npi intake with new crossover so I don't need pointers on it.

Here is my dyno charts post PI intake and cams. Charts are labeled STD, but were marked wrong when they printed the sheets - they are SAE.

best pull - engine hot

A/F

As for the install, I had pulled the front cover, but if I had to do it again, I would have gone the route of using the cam removal tool from Ford to save time/labor. If you use the tool, just follow the directions that come with the tool. It's really a bolt-in affair. You can leave the intake on the engine which also saves time and energy.

 

[d98gt]

That's the route that my installer is going to go. I'll do the intake at a later time since I can for sure do it on my own

 

[H What 4.6]

LI98GT what other mods was that with??

 

[LI98GTStang]

LI98GT what other mods was that with??

Just what's in my sig. basically a catted x, pulleys and FRPP catback with stock tune.

 

[Dusstbuster]

Wow! Isn't 17.5 EXTREMELY lean even at that low of RPMs?

 

[LI98GTStang]

Wow! Isn't 17.5 EXTREMELY lean even at that low of RPMs?

I was told by the shop that type of a curve is perfectly normal.