• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Anyone recommend ZZP 1.9 modded rocker arms?

97AutoXVette

97AutoXVette

New member
Wondering if this is a good mod to consider next (while I work on eliminating knock). I am guessing you'd recommend changing the springs as well if I go forward with it?

If you have done this mod, how well did the car respond with it?


Thanks in advance
 




Cam install isn't too bad once you figure out how to get the harmonic balancer off. That's my least favorite part of anything I've ever done on a GP.
 
97AutoXVette said:
Wondering if this is a good mod to consider next (while I work on eliminating knock). I am guessing you'd recommend changing the springs as well if I go forward with it?

If you have done this mod, how well did the car respond with it?


Thanks in advance
Click to expand...
also If you need help swapping springs I have the tools to do it
 


dsmuts said:
also If you need help swapping springs I have the tools to do it
Click to expand...

Nice! When I pick up a pair, I may contact you about that. What RPM did you set your shifts at with rockers and the stock springs by chance?


Thanks for all of the responses. I am not planning on tearing into the block for a cam swap anytime soon, so will likely go the rockers route for now.

Any recommendations on what I may need to change in the tune when I put these in? Recommended safe shift RPM?
 
dsmuts said:
6k rpm
Click to expand...

I've seen the magic number 6 before. Stock is set right at 5,350 at least in my 1999 GTP. Have you guys seen some good/safe gains by bumping the shift points up by that much? by gains, I mostly mean acceleration/track times by being WOT in more "area under the curve" locations in the power band.
 


I ran zzp 1.9 rockers with stock springs shifting at 6k no issues easy to install helped with a few degrees of kr and seemed to have better power up top...currently in the middle of a xp can install...rockers deff easy install for a beginner


Sent from my iPhone using Tapatalk
 
wa04compg said:
I ran zzp 1.9 rockers with stock springs shifting at 6k no issues easy to install helped with a few degrees of kr and seemed to have better power up top...currently in the middle of a xp can install...rockers deff easy install for a beginner


Sent from my iPhone using Tapatalk
Click to expand...

Good to hear.. want to sell those ZZP rockers to me by chance?!?!
 
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