|
|
11-23-2010
I'm about ready to begin the next mod. Should I do 1.9 rockers or headers next? My top priority is to reduce KR.
What are your thoughts? This car is my DD so keep that in mind too if it makes any difference.
Thanks!
(P.S. Current mods are in sig)
And yes, once these 605's are used up, I'm going for 104's.
Last edited by SliceTheRice; 11-23-2010 at 04:22 PM.
11-23-2010
how mechanically inclined are you?
11-23-2010
5 Things...
1) Get a glasspack or some form of resonator
2) Get headers...and stay catless
3) Sell your DP/PLOG after you buy the headers
4) Buy used rockers with the money you got from the DP/PLOG
5) Get a custom tune and turn that thing into a low 13's car if you can drive it.
11-23-2010
I'm fairly mechanically inclined, but I have some local GTP buddies who make up for whatever I lack.Originally Posted by saleenprix
What would you all consider to be a good deal on used rockers?
11-23-2010
250 shipped or less.
Preferably around 200.
And rollers.. forget modded rockers.
11-23-2010
u said lower KR that says headers more than rockers, so i agree on headers frist and rockers after
11-23-2010
I'm selling roller rockers for $250 shipped. They have literally 50 miles on them.
11-23-2010
I see. So if I'm offered rockers and pedestals for $100, that's a screaming deal? lol
11-23-2010
I would say yes...but condition of them? Mileage? Brand?
11-23-2010
Hold please....
11-23-2010
They're ZZP 1.9 modified with pedestals and about 10K miles on them. I'm told they're in perfect condition.
11-23-2010
skipped modded rockers... get rollers.
11-23-2010
why?
11-23-2010
Read bluegtp91's "Safely Modding Your 3800 Powered Car" thread.
2) - High Ratio Rockers – Thankfully GM made one thing simple…pushrod motors!! Stock GT/GTP cars came with 1.60:1 or 1.66:1 Ratio Rockers from the factory. There are a few choices that you have here to make some more power by letting those valves open more...
a) Modded Stock Rockers – ZZPerformance decided to elaborate on the efficient stock design for those wanting more performance on a budget. ZZP introduced the 1.90:1 Modded Stock Rockers. Basically, these rockers start out as stockers. The seats are welded in and ZZP re-machined them to achieve a ratio of 1.90:1. Great and easy way to add about 20 horsepower without having to change valve springs. As long as you keep your shift points at or below 6,000 RPM you will be fine. Anymore and the stock valve springs tend to float. Cost: $275+
b) Roller Rockers – If you want to upgrade your valve train and have the money to do so and are going the rocker route then Roller’s are right for you. Roller Rockers are a lot lighter and are much easier on the valves than the stock or Modded Rockers, but come at a price. Much more expensive than the Modded Stock Rockers for about the same performance gain. Roller’s come in the ratio of 1.60:1, 1.70:1, 1.80:1, 1.84:1, 1.90:1, and 1.95:1. Anything higher than 1.84:1 ratio is going to be needing valve springs to compensate for valve float as long as you are going to be shifting higher than 6,000 RPM’s. LS6(#90) or L76 Springs are great and cheap for this upgrade, but you will need retainers too. These are a great alternative to a cam budget wise and you still retain very stock drivability and some have even reported better gas mileage. Keep in mind you will benefit even more from a custom tune afterwards. Also remember that if you ever go with the cam route, you will have to sell the rockers as you can only run stock 1.6 ratio with a cam for the most part...unless you want to combine a higher ratio rocker with the cam you just installed for a crazy amount of lift. Cost: $399+
11-23-2010
ANDDDD they fail... and make noise...
Fact...
Just a little while ago we had a member get a set, install them, and had to send some back because of excessive side to side play when torqued properly.
11-23-2010
oooooooh All this time I read some where that aftermarket roller rockers wear and fail since they were made of a softer metal?
11-23-2010
where?
there was an issue with harland sharp aka intense rollers side loading and wearing.... but they are "corrected" pedestals to prevent that.
11-23-2010
ok thats what I read
11-24-2010
1.95 Roller Rockers and Crow Cams 105 Valve Springs/Retainers with Speed Daddy Catless Headers and a Custom tune...say hello more timing and mid to low 13's.
I would also suggest a Shift Kit of some kind at this point to help the clutches and bands with all the extra added power...brand...TransGo from Triple Edge Performance.
| « Previous Thread | Next Thread » |
| Tags for this Thread |
| Bookmarks |
Bookmarks |
