[Beto]

I have some nice supporting mods and I wanna hear some opinions on cam, springs, retainers, valve seals, push rods etc.
Whats need it and whats not?
Thanks.

 

[spd98]

Well you kind of limited to a few with stock heads. I would go with the xp or the s1x depending on how severe you wanna go. You'll still need springs OR or lightweight rods are fine. I would say go with 105 springs.

 

[mike3800gtp]

cams

is there anything bigger than the S1X or XP for stock heads? how about 1.7:1 rockers? will they make a difference thats worth the cost? will the stage 2 cam work with stock heads?

 

[spd98]

I think theoretically you can run an s2 with the viton seals and the modified retainers. I would think it would be shooting yourself in the foot though becuase your cam would be suffocated by heads that can't flow as much as needed. I think if go s1x you can use 1.7 rockers not sure on that one. I would think you could even run the s3 with the retainers and the seals but reliability would suck and again you wouldn't see many gains just becuase factory heads suck.

 

[parttimer]

Do the heads suck that bad for the S2? I was thinking about opening the ports a little to allow more flow without doing a major head job.

 

[spd98]

considering they have an almost 90 degree bend in them I would say yes. It isn't worth going with a large cam if you don't use better heads. You will get ALOT of power from an xp with stock heads. A local guy here put down close to 310FWHP.

 

[Beto]

I think either the intense blower cam or the XP could fit the bill. Then, later on trow some 1.7 rockers for a bit more lift. How this sound?

 

[DavesGTP]

XP, modded retainers, viton seals, 105 # springs =

 

[dougsgtp]

the 1.7's were with the vs cam. Ive never heard of anyone running 1.7's on a xp or s1x, im almost positive you would hit the valve covers if you put 1.7's on a xp or s1x

 

[dezldave961]

XP, modded retainers, viton seals, 105 # springs =

This is about the exact setup I've been told about, and am trying to make sure it's the best route I could go with stock heads for this season. I know a 1x/VS would be a safe bet, but are there gains to be made by going with the XP over a Vs/1x on stock heads?

Along with soon to be ported manifolds, I've replaced the d/p for some slight exhaust flow gain. I'm trying to get a decnt improvement this year, after being stuck at Level 1 modding (3.4, intake, exhaust, dhp) for 2 years. I won't be able to afford tranny (other than shift kit), or heads until next winter, but I'm hoping to do the best possible with cam, valvetrain, etc.

- Dave

 

[tan]

You might want to listen to the advice 'dougsgtp' is giving you on this one. I also beleive you will have problems with the cam /1.7 combo. 1.6:1 ratio is what is recommended. Just how much do you really think your going to gain using 1.7 over 1.6's.

 

[Merc]

I run the S1x and 1.6 rockers