cam help

mtang98 gt · Apr 4, 2011

Im looking for a good setup on cams for my 1998 gt with PI intake and NPI heads. I would like to not have to change the valve springs springs but still get a nice loping cam if thats possible.

jfor441 · Apr 4, 2011

Any aftermarket cam you will want new valvesprings.

mtang98 gt · Apr 4, 2011

Well what affordable cams and valve springs are out there.. i want a fair gain in horse power but don't wanna have to worry about piston to valve clearance.

vermilion · Apr 4, 2011

almost any cam worth its weight in gold youll have to notch the pistons.

mtang98 gt · Apr 4, 2011

what the hell does it mean to notch the pistons? Is there a cam i can get to get around that?

MadStang · Apr 4, 2011

mtang98 gt said:
what the hell does it mean to notch the pistons? Is there a cam i can get to get around that?

It means to create a groove for the valve so there isn't piston to valve contact...

There are, I posted in another thread that I'm running Houston Performance 292 cams. They don't require notching or any valvetrain upgrades. I picked up 40whp and a broader torque curve on an otherwise bonestock pi motor. And they have a very nice lope at idle....

mtang98 gt · Apr 4, 2011

Ive tried looking online for those cams and cant find anything how much did they cost you?

MadStang · Apr 4, 2011

mtang98 gt said:
Ive tried looking online for those cams and cant find anything how much did they cost you?

http://www.houstonperformance.com/

look up the cams & valvetrain section. You'd need to give them a call to actually purchase them. I paid $400 for them, I think they are requesting cores now so they increased the price to $450.

Wish I had a good vid of my car but it's back apart right now so I don't have any video

Regardless, this is my friends car, he goes by UnixHH on forums, he helped install my cams and he has a couple of vids on youtube...

N/A: http://www.youtube.com/user/sparatic03#p/u/34/c4O5cRimmR0
This is with blower: http://www.youtube.com/user/sparatic03#p/u/25/rfZj_W2sVt8

duff daddy · Apr 4, 2011

mtang98 gt said:
what the hell does it mean to notch the pistons? Is there a cam i can get to get around that?

Look @ #1 cylinder you will see the notches..

c_me_pass_u · Apr 4, 2011

I'm running comp cams 268 with beehive springs they are for npi but the car isn't out yet people told me it should have a good lope sound to it

duff daddy · Apr 4, 2011

alot of the sound people want is where the idle is left.

MadStang · Apr 4, 2011

Duff Daddy said:
alot of the sound people want is where the idle is left.

very true. the vid I posted of my friends car is idling at 900. mine idles at 750 lol. Lot's 'o lope.

duff daddy · Apr 4, 2011

and mines at 1100 and it has a good amount of smack

mtang98 gt · Apr 4, 2011

Duff Daddy said:
mtang98 gt said:

what the hell does it mean to notch the pistons? Is there a cam i can get to get around that?

Click to expand...

Look @ #1 cylinder you will see the notches..

So thats what those are for ive seen that before but didnt know thats what that was for.
400 dollars if resonable cause ive seen cams goo for 800 dollars and not looking to spend that much

duff daddy · Apr 4, 2011

I sold my comp 270's for 500 shipped with massive valve springs.

mtang98 gt · Apr 5, 2011

well who ever got them was lucky as hell lol you wanna give me some for free?? haha

duff daddy · Apr 5, 2011

Look on CL and local forums, you can get them all the time.

mtang98 gt · Jun 23, 2011

im sorry for draging up an old thread but im still looking for the right cam.. what is the largest cam i can run without having to worry about piston to valve clearance? I plan on using the new set of cams in a freshened up set of pi heads that are ported

MadStang · Jun 23, 2011

mtang98 gt said:
im sorry for draging up an old thread but im still looking for the right cam.. what is the largest cam i can run without having to worry about piston to valve clearance? I plan on using the new set of cams in a freshened up set of pi heads that are ported

It's not about running the largest cam you can throw at a motor. Run the one that's best for your setup.

I love my hp292's as mentioned earlier in the thread. For a bonestock motor with no valve notched you can't go wrong with a 40whp gain.

mtang98 gt · Jun 23, 2011

well heres what i got if it helps.. ive got 75mm throtte body stack racing intake plenum, CAI, pi intake, going to get ported pi heads, BBK shorty ceramic coated headers, full exhaust, 2800 stall, 4.10 gears, and atuner