~STOLEN~

I've been doing research for when i tear down this winter to have guides checked again and possibly re done. That said, i currently have lingenfelter heads on the car with apprx 4k miles on them that are running oe rockers with trunion upgrade and large cam 660/660 236/256/----111lsa

I was wondering if this set of rockers from T&D would be a better option than the others that require head milling for installation. I feel if the guides arent worn and heads DONT have to come off, if maybe these are an option to prolong the inevitable guide wear.

If anyone has any feedback from these with real world review please chime in. meaning, you installed them, it helped quiet the valvetrain, and or you have xxxx miles with them and have not shown guide wear since guides were done and rockers installed.
thanks

http://tdmach.com/product/ls7-nhra-legal-direct-bolt/

MTPZ06

I'm all in for people to experiment with these...looks like a great option for us. Haven't seen anyone on here with a set yet. I would just say make sure you've got the right spring for your cam and the added nose weight of the rocker arms.

~STOLEN~

as long as there is not any spring damage the Ferrea springs that are in it currently will stay in. they are good for over 700 lift and im in the 660 range. funny that you mention that because the btr 685 springs couldnt control the valves above 5500rpm thats why i ended up with these 1100 freeking springs LOL

I think by the end of summer i wouldnt be the lab rat for these, but either way i think they are a great option....SALTY but an option

Turbo2L

Make sure you are sitting down when you get a price quote on those.

~STOLEN~

i saw its in the 1300 range right?

in all honesty, i could keep this car forever so this would be an investment.....but salty none the less LOL

MTPZ06

They're only like $80/ea. You might be thinking of the Jesel pedestal mount rockers...those are like $3500 for the set.

Unreal

People need to stop talking about rated lift, as that is just about a useless number. That means just about zero.

~STOLEN~

Why is rated lift a useless number?

Unreal

Calm down, didn't call you stupid.

The point at which a spring binds is typically what the "max lift" means, which can also be all over the place without knowing what the install height is or where they are shimmed too. The numbers that have far more meaning are the open/closed pressure that is needed to control the valve train. You can have a 700 lift spring that can't control anything, but a 600 lift spring that can control a heavy SS valve/etc.

Like saying high lift cam, or low lift cam, without putting anything else around it. Better off to post what springs you actually have, so someone can look up the actual specs and see if they are good or bad for a certain application. Plus without knowing the complete valve train setup, can't even say if they are good or bad.

What is it?
Coil bind happens when the valve spring is fully compressed. The coils of the spring contact each other. This stops the valve from opening any further. Coil bind can result in damage to the cam lobe, lifter, pushrod, rocker arm, valve stem, etc...

How is it measured?
To find the maximum travel of a valve spring, subtract the coil bind height from the Installed Height. Then, subtract 0.050" to find the max valve lift that spring can safely handle.

Copy and pasted from comp tech.
For example, see this Comp Cams Valve Spring:

Installed Height

Coil Bind Height

1.800"

1.100"

1.800" - 1.100" = 0.700"

0.700" - 0.050" = 0.650"

Maximum Valve Lift = 0.650"

So if you shim them up to say 1.7" install height for more spring pressure, you now have .550" lift springs. So basically .700 lift is nothing more than when the springs begins to bind, not its ability to control a valve.

~STOLEN~

Gotcha ill snag the part number of my springs to update the post.

Your .02 on these rockers?

redbird555

Unreal

Lots of money, when plenty of options out there that have shown almost no wear, and work great. Heavier parts of hard to control, and can snow ball into all sorts of other issues. Stock rockers are actually an amazing piece and 7000-7500rpm on any pushrod motor is amazing. Part of the reason they can do that is stuff like the stock rockers.

~STOLEN~

I just think a milled rocker pedistols on used heads may make them harder to unload given someone wouldn't wanna buy the matching rockers to go with them. That said i don't know if I will keep the heads I have if they have to come off again due to guide wear.

A lot of the info I read on here makes me look further into the ls7 valvetrain. The issues, and how they may be prevented/fixed.
Gotta pay to play

And the ls7 proves that from oil pan to intake LOL

jayyyw

I know someone running those rockers and he spins his motor to 8k RPM. He's been running them about a year with no issues.

~STOLEN~

is he a member on here by any chance?

jayyyw

Yes, but rarely posts. You can find him on FB. His name is Kasey A(don't remember how to spell his last name)

~STOLEN~

kasey artmayer?

yellow car?

jayyyw

Yes, him

Sent you a PM as well.

Unreal

I'm sure they are a nice rocker, just make sure your whole setup takes into account them. See too many people saying they are going to throw a set on some AHP heads with a really mild cam and some PSI springs, and that sounds like a recipe for disaster.

I have the crower SS rockers on order for my new heads, but will be running a pretty crazy spring setup to control that up to 7500 and the cam is spec'd specifically for that. Along with lifters, pushrods, etc.

~STOLEN~

https://www.lingenfelter.com/PROD.ht...6#.WuiNFYjwbPo


called and verified with guys at LPE, these are the springs on my heads