I have a 98 cobra. Eventually I want to turbo it. Even with all the head talk around i find myself a bit confused still. Which are better for boost? Id like c heads because theyre better for NA for before I go FI but if my b heads would be better once I turbo then I dont want to do the swap. Think Id be happy with around 600 whp...for a while at least haha
B heads or C heads?
- Thread starter CobraKid98
- Start date
C heads are always better. Fi or not.
Ive heard some bad things about certain c heads but dont really know what to look for. Suggestions?
But whats this about a cooling mod and spark plug threads or whatever?
I've done a lot of reading lately of this issue. A lot of b head guys agree that the b shine with fi and pull great in higher rpm range.
How high do you intend to spin the motor?
B heads make less power both off and on boost and at any RPM. Where Cs shine is off boost, midrange and also in spooling turbos quicker.
Once again, Bs do not make more power at higher RPMs.
Turbocharged B head guy here and my biggest regret is that I ever spent any money on the B heads. I wish I would have just picked up a set of C heads and intake.
I'm going to get burned for this but here goes.
If your going Turbo just save the money on heads and spend it elsewhere.
The C heads are better overall but I'm sure you can get close ( to using C heads ) performance by using what you already have.
From the numbers I have seen on the forums 96-2004 cobra heads all have great response to boost.
If your going Turbo just save the money on heads and spend it elsewhere.
The C heads are better overall but I'm sure you can get close ( to using C heads ) performance by using what you already have.
From the numbers I have seen on the forums 96-2004 cobra heads all have great response to boost.
Last edited:
Im not planning on going past 7000. Also besides just better peak power I think Im more concerned with the overall power and torque. I know I could get 600 with b heads but Id like to have the motor be more "efficient" if you will throughout the powerband. Also IDK when Ill be turboing it, so if I could get a decent amount of performance from the swap while NA also then that is a big deal.
Stock 99 Cobra C heads here with 95lb springs. Love them. Power is smooth on and off boost. If you do plan on going turbo later, 95lb springs are a must.
Did you have them on before you went turbo? if so what was the drivability and power difference?
Nope. Bought the car blown up turboed already. Hence why I say 95lb springs are a must. He floated and bent 2 valves.
one of the brightest individuals on this topic has already posted about what you're asking about
scroll up :thumbsup:
haha of course. I meant more like the feeling or experience. Just a curious guy wondering how it might be. Just would kinda suck if you did the swap and didnt really notice a difference. But im sure u will a bit.
i certainly wasnt talking about myself if you thought thats what i was implying lol
doing a c head swap and psri will give you 20-30hp
i cant be of more help with hp numbers as i have not be in the NA game for awhile
you'll notice it! and by keeping your cams you will be even better off then the mach 1 guys
but again, if you are just doing a built bottom end and turbo kit to hit 600 and dont care about anything else stock B heads are fine. if the power adder will support it, so will the heads
the worlds quickest mod motor has B heads and ran a 6.0x @ 23x
the worlds quickest mod motor has B heads and ran a 6.0x @ 23x
Users who are viewing this thread
