Pontiac Grand Prix Forums : Grandprix

im looking at the XP, i have the ZZP M90 kit on my L36, they want you to buy a double roller and 105 springs. any cam guys here can recommend which one rollmaster or jp? any good experiences with this cam on a blown car? thanks guys -Nick

The Xp cam is one of the most common cams to go with, I have also heard that the S1X cam also brings in good results, but I'm a bigger fan of the idle of the XP. Some people just buy a new stock timing chain to put in along with 105# springs to avoid the problems with the double rollers.

A few people have had more problems with the double rollers. A thread on here as well as on clubgp shows some of the problems with these timing chains. The chamfer on the crankshaft sprocket needs to be machined, Farnsworth knows a lot more about it. Some people use 2 cover gaskets on the cover or mill the actual cover so that it doesn't rub. That does not solve the actual problem, the sprocket needs to be measured or machined for proper fitment on our American L67/L36 engines.

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2001 GTP PT61 Turbo, IC, #65 Inj. E85

I just installed the xp cam about two weeks ago and i love it.
The power added is great over the 1.9's i had before.
I bought the xp cam with 105 spring and retainers.
Also bought valve seals and locks and stock timing chain.
And the #4 cam install kit from zz p.
$700 for the cam and goodies and $350 for the install.

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TOGs//Stge III ZZP Blower//LS1 tb// 85 maf//XP cam //105lb spings//3" Dp& high flowcat//3.2",3.0"
Ud plly//Msd wires//Aut 103's//CAI//ZZ PCM//ZZ P shift kit//42.5lb. 13.3@104MPH DEC 08

i was feeling the stock timing set, i too have heard of nightmares from the double rollers, any care to add comments?

jp double booyyyyy. not ever going to crack open my front cover again unless i go with another cam.

if youre staying on stock heads, get an s1x. it has a better powerband than the xp, even though its less popular.

if youre getting ported heads, get something big like an IS3. screw the xpz.

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98 XGT - sold
06 impreza 2.5i 5 speed - stock, slow, and awesome

im keeping the stock heads, so the jp is a good chain then?

Your going to want to go ahead and replace the timing chain anyways, so you might as well get a double roller, and get the Rollmaster brand.

well look slike im buying the XP with the rollmaster and springs, what else do i need? i wanna order this stuff once and drop off the car to get it done, thanks guys!

rollmasters are the only ones ive ever heard of breaking. never heard of a jp breaking. youre gonna need to mill the oil pump cover or double gasket the front cover. either that or you can fix it the correct way and chamfer the crank gear to match the stock one.

you may want to think of changing your cam choice as well. is your car a DD? do you still have your l36 block? are you going to get a higher stall? these may affect how your car runs and the powerband.

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98 XGT - sold
06 impreza 2.5i 5 speed - stock, slow, and awesome

daily driver, l36 block, i would buy the milled cover from zzp. not changing the converter, unless the trans blows and tripleedge builds me a new one. what would you recommend?

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How To: E-Brake Pwn
2001 GTP. D/S Rotors * Custom Intake * DHP PCM *
Looking For - 3" in DP with Cat. PM me if selling

well, if you look at the cam thread for the dyno charts it will help you to decide what would be best for you.

in my opinion, a cam with more midrange like a VS would be much more entertaining on the street. an s1x/xp would be a little faster on the top end, which you dont get to all the time unless you have your gas pedal on a switch.

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98 XGT - sold
06 impreza 2.5i 5 speed - stock, slow, and awesome

I've had the S1X and XP. IMO the S1X is the better of the two on the low end. The VS may be ok, but the VS doesn't appear to be much better and an IC 1.9 rockered car.

With 105# springs you could just put in a new stock chain and tensioner. I've run the JP and Rollmaster single chains without issue. You will see thread where people have had issues with the double set breaking, including a pretty recent JP double. Seems all have their pluses and minuses

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04 Indy SS build #972
GPS Cam 1, TOG's, Tripleedgeperformance.com transmission-ported blower-build and tuning, PRJ wires, PRJ Rails, Stage 2 IC.

my car screams 1-2 shift second gear is nice too soon as she shifts to 3rd she falls on her face, its the stock cam is very not top end friendly. i want more midrange to topend power. im not ordering the stuff till next week so please guys shout out all your advice-Nick

s1x is your cam then. ive heard it runs better than the xp as far as a useable powerband goes.

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98 XGT - sold
06 impreza 2.5i 5 speed - stock, slow, and awesome

ok, any guys with an S1X, care to comment?

what specifically do you want to know?

Yes with the stock cam the top end can use help.
The S1X has a more usable power band.
XP seems to drop some low end in favor of the top end.
XP has a better sound at idle, but who sits around and idles?
IMO the S1X is a better street and daily driver cam, because of the power band.

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04 Indy SS build #972
GPS Cam 1, TOG's, Tripleedgeperformance.com transmission-ported blower-build and tuning, PRJ wires, PRJ Rails, Stage 2 IC.

This is what i bought with the cam!!
Xp cam
105 valve springs
modded retainers
vitton valve seals
(stock) valve locks
(Stock) timing chain – also depends what brand you want and if you want it single or double roller. I bought a stock one.
new reusable rocker bolts
front cover gasket
Valve cover gaskets
lower intake manifold gasket
coolant o rings
coolant elbows
supercharger gasket
cam bolt
timing chain tensioner
crank bolt
red rtv
oil change – you need 2 oil changes.

I bought the cam with springs and retainer as a package.
Then i bought the rest of the stuff as a install kit!

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TOGs//Stge III ZZP Blower//LS1 tb// 85 maf//XP cam //105lb spings//3" Dp& high flowcat//3.2",3.0"
Ud plly//Msd wires//Aut 103's//CAI//ZZ PCM//ZZ P shift kit//42.5lb. 13.3@104MPH DEC 08