I need help to gain more HP

[Mr.SN95]

I just recently bought a 1998 sn95 it's a cool car but however the HP is a little weak so I was wondering how do I gain at least 100 to 150 HP doing a na build and my second question is is it possible that I can put pi upgrades to a non-pr motor it would be great if you guys can help me out

 

[badass98svt]

Yes you can use PI heads. Adding a vortech would get you to your goals a lot faster and cheaper than going NA.
100-150hp isn't cheap (NA) for a 2V

 

[Mr.SN95]

Yes you can use PI heads. Adding a vortech would get you to your goals a lot faster and cheaper than going NA.
100-150hp isn't cheap (NA) for a 2V

I appreciate you replying back yes I understand adding a supercharger would achieve those numbers faster and cheaper but still I would like to know how to do a proper NA build

 

[07GtS197]

A trick flow top end would do it but as said already it won’t be cheap. These 2v’s don’t respond well to bolt ons.

 

[badass98svt]

A trick flow top end would do it but as said already it won’t be cheap. These 2v’s don’t respond well to bolt ons.

I still dont think heads and cams are going to net him 100-150hp

 

[SnakeBit!]

He's right^^^^
nope. it won't. from my own experience.

 

[Snorky]

I still dont think heads and cams are going to net him 100-150hp

From a stock anemic NPI. It might. Those things made Like 215 crank. Guys with PI short block, TFS heads with the proper grind cams for them can make upwards of 350 whp. The odd area unspoken is tfs heads on An NPI shortblock with its slightly higher compression. How much cam can you safely throw at it? Tfs heads and cams will cost a lot more in the end than a used blower.

I myself am on team blower for the cost to power ratio.

 

[Snorky]

I suppose the question is why are you really pushing for an NA build? Would you be okay with yourself if someone was next to you that was faster with an engine swap or a blower for the same cost or less.

 

[07GtS197]

Yeah even bolt on 2v’s aren’t that impressive. Maybe with thousands of dollars thrown at it in heads, cam and intake but it’s not worth it. At that point, you’d be spinning it too high for a t45 to reliably handle, so that would need to be upgraded as well. In the end, you’d be in more than if you started off with a blower.

 

[Mr.SN95]

I still dont think heads and cams are going to net him 100-150hp

I suppose the question is why are you really pushing for an NA build? Would you be okay with yourself if someone was next to you that was faster with an engine swap or a blower for the same cost or less.

I suppose the question is why are you really pushing for an NA build? Would you be okay with yourself if someone was next to you that was faster with an engine swap or a blower for the same cost or less.

I suppose the question is why are you really pushing for an NA build? Would you be okay with yourself if someone was next to you that was faster with an engine swap or a blower for the same cost or less.

Lol I understand what you are trying to say yes going any kind of force induction route would be a lot cheaper but for me this car means so much more long story short it was in the family since 99 I love the NA sound and don't want to lose it over for some Force induction mods and I'm doing this build overtime

 

[ttocs]

you don't have to have the supercharger whine if you don't want it. I have a vortech V3 and it lopes along nicely with a trickflow stage 1 cam and still has the power of boost.

 

[Snorky]

Lol I understand what you are trying to say yes going any kind of force induction route would be a lot cheaper but for me this car means so much more long story short it was in the family since 99 I love the NA sound and don't want to lose it over for some Force induction mods and I'm doing this build overtime

If you plan to go tfs heads, do the heads and cams at the same time. And specify tfs grinds. I would recommend CMS (cushmanmotorsports) cams or MHS (Modular head shop) cams. Can get tfs heads from either place. I would call/email them and tell them what you are interested in doing. The year of your engine, etc. With an honest goal of what you are looking to do. Write down their recommendations of parts combos and compare them. If MHS recommends souped up PI heads. Tell them you're interested in trick flows. They make great PI heads. But tfs are worth the extra coin over Ported PI heads.

 

[Snorky]

you don't have to have the supercharger whine if you don't want it. I have a vortech V3 and it lopes along nicely with a trickflow stage 1 cam and still has the power of boost.

You should post more pics of your car.

 

[ttocs]

I have been wanting to get back into it the past couple of months but been struggling with some back problems, and where I need to work will be extra unfriendly to my back. I just discovered the other day it is my hip out of the socket that has been bothering me and not my back. I am hoping with a couple of days taking it easy I might finally be able to get some work done on it.

 

[RAU03MACH]

4v heads

 

[96blak54]

If you want to retain all the original engine components such as intake manifold and cams, youll want to run the forced induction scenario. If you dont mind swapping the intake manifold and cams youll pick up some really good power. But I feel if you go through the hassle of swapping cams you may as well swap to a head thatll benefit more power to your original short block.

Your cars original engine is referred to as a Non performance improved(NPI) engine. The 99-up mustangs are referred to as performance improved(PI). Some things to look at with your original engine, start with the intake manifold. The factory npi manifold was all plastic including the water cross over located directly behind the alternator. This plastic crossover will fail by cracking and leaking really bad. Early pi manifolds were all plastic as well. The pi manifold eventually revised with an aluminum crossover that doesnt fail. Aftermarket manifolds also have aluminum crossovers, but the manifold design chokes the engine out terribly. The best design manifold is the stock aluminum crossover plastic PI manifold and it offers the most potential for horsepower while being relatively stock. There exists all aluminum manifolds from the aftermarket world that offer horsepower potential and can be found forsale through marketplaces and swap meets. Ford made a Bullitt version 2valve that came with an all aluminum manifold that can be found forsale and will bolt on. Edelbrock currently makes new manifolds that offer the most hp potential, but this intake is stepping away from factory setup.

PI heads on a NPI shortblock offers a bump in compression. Add the PI cams along with the pi manifold ontop of your npi shortblock is supposedly a 40 hp increase. Not shabby for stock parts. Be advised tho, not all factory parts are as simple as 2 versions, NPI or PI, There are differences with each version and knowing the differences will maximize your efforts. Just be sure to come here with your questions and ideas.

On that last note, your engine can perform well with the correct components. Can 150hp be extracted from what you have?... no. You will need to swap components around.

 

[NicksGTR]

Engine guru: