[bahrstool]

I've stumbled on a set of RF-2L1E-6090-C20B PI heads. Are these decent for a swap? From what I have found is they came on 02-04 f-150 supercrews. Does them being truck heads make them less desireable then a set off another mustang or crown vic?

[p4ndiamond]

they are all the same.

[bahrstool]

will it be a better swap if i do the heads or just the cams?

[p4ndiamond]

Umm honestly the heads dont net much gain and increase your compression. If you plan on going boosted the heads are a bad idea. I have the cams and intake which is nice. Heads i hear add around 10hp or so. NPI heads flow great for 2v heads already. if you are going to do springs and valves then the heads may be fine to get you can do all that with it out the car.

[FLEX4.6]

If you dont plan on going boosted, the headswap is great. The headswap will get you around 260 horses with all stock parts, whereas the cams and intake will only put you around 215. Comes down to- do you want to spend the money just to run high 14s or spend a little bit more to drop to low 14s to high or mid 13s depending on what else you do. If you dont have any major crazy plans for it, go with heads. If you do, then do intake and cams and shoot some nitrous through it.

[p4ndiamond]

^ Lol wtf. All those numbers are incorrect -.-

At the crank FULL PI swap will net at most 265 or so hp due to the bump in compression which with a good tune will net around 230-240 rwhp . Other bolts ons such as long tubes can net even more to the wheels.

Intake and cams will be around 250-255 at the crank and put down on average about 220 rwhp without other bolt ons.

Been there done that.
The difference in the PI heads and NPI heads don't make a big change in 1/4 times at all.
ported NPI heads are far better than PI heads.The cost to put cash into the PI are honestly not worth the gain. Its money used better somewhere else to gain time while keeping options open to boost are not. Idk where you got these random 1/4 times but thats laughable .

As far as touching modular heads. They should only be done by someone who really knows what they are doing. Most shops end up making them worse >_< .

before a tune most full PI swap see around 230 hp . I dont feel that they are worth it too much because the money you spend to tune and the money spent on the heads comes up to the cost of a good NPI cam that will put down 265-290 rwhp.

Think smart not rush. Trust me.

[bahrstool]

So the cam swap is the best bang for the wallet? I'm not looking to have a racecar, been there done that. I just want to give the car some pep and keep it fun to drive. The heads are only gonna run me $150 so I'll probably just pick them up and swap the cams.

[delgadog]

well bahrstool, if ur not going to use the pi heads, u can sell the to me for 100 when I get my taxes

[FLEX4.6]

So you are trying to say that your car has 250 crank hp? But the best you could pull was a 14.9 just squeaking the tires a little? Lmao. I have a buddy who did full swap and ran 13.84 with a mild tune... So showboating, no. Going from actual numbers and experience, yes. So try better bruh... Maby try getting some better numbers before you try to talk trash.

[FLEX4.6]

First run with PI swap - YouTube

First run with PI swap - YouTube

[FLEX4.6]

1998 Ford Mustang 1/4 mile 13.57 @ 103mph - YouTube

1998 Ford Mustang 1/4 mile 13.57 @ 103mph - YouTube

WOW! That sure is alot of 10hp. All the way from a 14.9 that these run stock to 13s.

[bahrstool]

So that means the full swap is more beneficial then? Im not trying to play stupid or anything. I know chevy small blocks not ford modulars. So if the full PI swap will gain a full second it sounds very worth it to me

[FLEX4.6]

If you just want a fun daily driver, yes. If you want alot of boost, no. I will be done with my swap next month hopefully and I will give you a time.

[bahrstool]

sounds good. I just want something that will get up and go when i want it to.

[p4ndiamond]

PI heads on a mod motor dont take a second off your time -.-

[bahrstool]

I know you can gain a second from heads, ive done it but not on these motors. I'm just going to buy them and keep reading on what people have to say and do some research. Any constructive advice will always be appreciated. If you are going to rip on eachother please take it to another thread. People playing I have a bigger d*** doesn't help with tech questions.

[p4ndiamond]

Yeah im not up for all that nonsense either. There are kiddy forums for that. Go and do research on how the heads are made and why they do what they do. Thats the best way to learn about it bro. i have a few links that will assist you on everything you need to know about those heads. and the guys at MHS are also very helpful.

[p4ndiamond]

Originally Posted by bahrstool So the cam swap is the best bang for the wallet? I'm not looking to have a racecar, been there done that. I just want to give the car some pep and keep it fun to drive. The heads are only gonna run me $150 so I'll probably just pick them up and swap the cams.

Yeah it really is. you can and will make it into 13's with cam and intake swap if you can drive good.

[bahrstool]

if it gets me into the 13's ill be happy and use the rest of the bolt-ons i picked up to get low 13's hi 12's. I'll be content with that. I ran 11.70's with my last car so it would be nice to get back to that but i think anything that can run 12's that shouldn't is respectable.

[Jhoward93]

Im doing my pi headswap as we speak.