Thread: XPZ/Intense Stage 4 Heads

Wanted to get opinions if the Intense Stage 4 heads are too much to be ran with a XPZ cam or just fine for it and if i can run those heads without a problem with the XPZ cam. Most likely i will be going with a L36 block and a pretty decent build aiming for close to 400 if possible with the build. But before i spend the money i wanted to get opinions on them since i have been holding off the heads for a pretty long time now and i want to get the build started. so feel free to inform me

I'd opt for ZZP heads over intense based on exhaust valve size.

Regardless, 150# springs on intake and 130 on exhaust would be nice if you planned on spinning to 7000 and running 13-16 PSI.

However do you really?

If not, 130 intake and 105 exhaust is fine.

Honestly making more than 350 WHP is really "super secret" as far as GPF knows. We don't make power over here, we just solve common issues and suggest 3.4 setups haha.

Originally Posted by matt5112

I'd opt for ZZP heads over intense based on exhaust valve size.

Regardless, 150# springs on intake and 130 on exhaust would be nice if you planned on spinning to 7000 and running 13-16 PSI.

However do you really?

If not, 130 intake and 105 exhaust is fine.

Honestly making more than 350 WHP is really "super secret" as far as GPF knows. We don't make power over here, we just solve common issues and suggest 3.4 setups haha.

Haha well mainly going with these because of price a used set with less then 3k on them for almost half the cost. and i figure might as well be a bit more ported then not enough.
Well anything really above 350 ill be happy i know it isnt easy and i dont want to set my expectations to high but around that 350 ill be happy that way if its anything above that ill be surprised lol

Originally Posted by 99pgpgt

or if you dont wanna dump more money than needed and be limited too 400 wheel...go turbo for less and make way more power

Turbo at the moment isnt in my thought never messed with a turbo before and dont know **** about them..

350 hp and 350whp are very different and as others have said 350 whp on a SC setup is kind of like finding a unicorn or something. IS4 heads and XPZ cam sound like a solid start to me esp if you can get the heads for a good price.

Originally Posted by 98GrandPrixIraqVet

350 hp and 350whp are very different and as others have said 350 whp on a SC setup is kind of like finding a unicorn or something. IS4 heads and XPZ cam sound like a solid start to me esp if you can get the heads for a good price.

Well all I really need left is heads and Trans an of course tune but I have a list of parts that I have already.
So stage 4 heads from intense should be good enough?

I might concider it at one point but due to the fact of living in Cali it's hard to get away with a turbo. If I didn't have to worry about it here I would of gone straight turbo and done my research on it by now.

Between the xpz and intense stage 4 cam what gives more power?

Stage four is for larger power adders.

Stage three and xpz are comparable with more top end with the s3 and more midrange with the xpz.

Originally Posted by gtpeddie

not too sure but this car has a stage 4 intense cam and it sounds nice, and a stage 4 cam is cheaper then an xpz

Damn thats nice right there

Originally Posted by matt5112

Stage four is for larger power adders.

Stage three and xpz are comparable with more top end with the s3 and more midrange with the xpz.

Well I think for now I will keep the xpz since I have it already :/
wish I would of known the intense stage 4 would be better. But hopefully I'll be happy with the xpz I mean it isn't a weak cam either.

You have a larger power adder than the m90?

xpz has been used in all of the record setting 3800 cars just about.

Originally Posted by matt5112

You have a larger power adder than the m90?

Nope but I'm sure maxing out a gen v is good enough for a stage 4 can don't you think?