[The Novice]

Hey guys im looking to add alittle more HP to my Mustang Gt. I bought the car and it has some after market parts on it but i was woundering how much more HP i would get with Trickflow heads over the Roush heads it has on it now, if it would be worth it and what ones would actually fit.
So far the engine mods are as so....
190 LPH Fuel pump
Adjustable fuel regulators
Roush heads
Trickflow upper and lower intake ( but i dunno what on exactly, is there a way to find out? )
MSD 6AL and blaster 2 coil.

So with those mods ( that i can think of ) I was woundering what Trickflow mods would fit but give me more HP, and how much more ( b/c i dont think 10- 15 more HP would be worth $1,800 )
Let me know what you guys think, and if its worth it or not. I figred i should get good numbers with the TFS Intake on there already right?
Thanks for any and all help! - The Novice.

[1slo5.0]

Which Roush heads?

[The Novice]

To be honest i cant even be sure. Since i bought it like that, which is kinda a real bummer when it comes to it. I hate not knowing everything that is in my car ;( I Plan to break it all down, the entire engine that is and find out, and prob but a NOS kit on it, but that will be a little while, i want to be able to drive it this summer so that will be a winter project.
Is there an easy way to find out, or will it mean replacing the any of the seals or anything like that?

[**Chris**]

I don't think that you have Roush heads on your car. Whoever told you that was just probably trying to sell the car. I wasn't even aware that Roush makes heads for 5.0's in the aftermarket. Most of the stuff they do for Mustangs is tune the existing motor and at most add their Roushcharger... the new P-51 Mustang has Roush specific parts in the motor as upgrades...but not before that.


If you don't know what you have or even how to identify what you have, take very detailed pics in good light...of the heads, the intakes (upper and lower)..and post them.

Maybe we can help you.

[The Novice]

Ok thanks, is it ok to take of the head covers or would it mean replacing anything? B/c arnt they supposed to be air tight?

[1slo5.0]

Originally Posted by **Chris** I don't think that you have Roush heads on your car. Whoever told you that was just probably trying to sell the car. I wasn't even aware that Roush makes heads for 5.0's in the aftermarket. Most of the stuff they do for Mustangs is tune the existing motor and at most add their Roushcharger... the new P-51 Mustang has Roush specific parts in the motor as upgrades...but not before that. If you don't know what you have or even how to identify what you have, take very detailed pics in good light...of the heads, the intakes (upper and lower)..and post them. Maybe we can help you.

Roush does make 5 liter heads.......or did anyway.

[STREET6]

I believe "Rousch" heads are made by World Products. I believe they are simular to their windsor or windsor jr. heads. Should be made of iron. If you can manage some pictures, or get one of the valve covers off and take pictures we should be able to see some markings. I would say that if they are Rousch heads it would not be worth switching them out now. They are supposed to be pretty decent. Save you a lot of work and money.