98z28_53

I have a 1998 Z28 that i want to do more mods to but not sure whats the best route to go!! The car already has SLP cold air, Magic Stick 4 Cam, Long tube headers, 3" off road x pipe w/o cats, dual magnaflow race mufflers, 6 Speed trans, 3.73 rear end gears and Dyno Tuned. Im thinking of putting a F.A.S.T. 92mm intake manifold and PTM 92mm throttle body or LS2 Heads!! Whats the better option?

Burken01

iTrader: (88)

fast 102 combo and some good ported heads (ported 243's, 5.3's, or if budget allows some Trickflows 215cc)

Tainted

iTrader: (9)

Definitely get the 102mm fast and some ported 243 heads would be great.

98z28_53

will the 102 effect the drivability of the car as a daily driver? and what will it do for me with having the $ for the heads at the moment?

Tainted

iTrader: (9)

The 102 will undoubtedly perform the best and will not effect your driveability.

2nd your current intake sucks. You would obviously gain power by getting heads now but you wouldnt be able to exploit their potential with your current intake. Get the intake now and when you add heads your gains will be even better.

98z28_53

what kind of power gain would i see without the heads?

Burken01

iTrader: (88)

well nothing incredibly noticeable, thats why when you see people doing H/C builds they need to breath that extra bit so Intake is usually always done with it...

IMO I would do them both at the same time, that way you can tune all at the same time.

98z28_53

would an underdrive pully kit help any?

Mazzenger

iTrader: (5)

If you have an LS1 intake then a Fast intake will definately help.
The 102 will get you a little more power, but cost more than the 92.

The underdrive pulley will free up 5-8 hp generally and allow you to rev up quicker.

You might try an LS6 intake and some better heads.
Whats your budget?

What part of Oklahoma do you live in?

98z28_53

im looking at about $1500 to spend Im in Woodward

Tainted

iTrader: (9)

Youre in luck. Y9u can get a new fast 102 for 850 and a used set of ls6 heads for about 400

98z28_53

where would i look at getting the heads?

98z28_53

for that price?

Burken01

iTrader: (88)

the classifieds

yonerhottlt1

iTrader: (21)

I would get a set of ported heads and just run an LS6 intake for now, and you can always upgrade to a F.A.S.T. later as an intake swap is simple compared to doing a head job. Not only that but if he buys a 102 for $850, he still has to get a TB, fuel rails etc. to run it. Just my 2 pennies...

98z28_53

does anyone have a set of ls2/ls6 heads that theyll sell?

Burken01

iTrader: (88)

they pop up quite a bit here on the classified section at the bottom of the forum page...

Browse around you can get the fast 102 used, and heads... mind you, I would get whatever head you end up getting cleaned up with atleast a small mill job...

If you live in an area where they don't work and do stuff like that, then look into some heads that are done already..

PREDATOR-Z

He has a ms4, no mill allowed without flycutting.

justin hover

Don't neglect your suspension....You have to be able to keep the car planted to the ground and prevent dimples in your rear fenders and typical abuse to the chasies. Tranfer of hp/torque to the ground is acheived with a stout suspension setup.

Burken01

iTrader: (88)

yeah thats a big cam OP, Might want to look into renting the flycutting tool...

I meant a slight clean up mill since you'll want a nice flat surface but you have to check PTV clearance..