I want to run the LE 2 package. I want to start getting the stuff I need to support this upgrade.
I would like to run low 12/High 11's with this do it.

I want to run comp pro mag NSA 1.6 roller
GM guildplates
What length pushrods and does it matter if I decide to go bigger with the cam at the last minute the length?
7/16 rocker studs any brand better/price?I was looking at ARP
Poss TB- Holley, AS & M, BBK?
do I need a LT4 HD timing chain?

Can I run the 1.6 rollers on a stock spring till I get the money to do the swap?
Will the throttle body work on a stock motor?
I have LT4 KM, AS & M mids no cat, borla, 3.73

 

arguably the best combo is pro mag NSA 7/16 stud 1.6 ratio...gm guideplates, hardened or chromoly pushrods. Stock length is usually fine, but it depending the deck height of the heads. if you mill stock heads enough, you might need short pushrods (7.150") and some aftermarket heads my be a little different in height also. best way is to measure to see what size you need.
you can run 1.6 rockers on stock springs.

throttle body will work

It is preferred by many to do an lt4 HD timing chain, or go cloyes double roller and an electric water pump.

7/16 stud in arp is cheap and easy.
all this stuff will be fine and exceed what you are doing

 

Heads have never been off of car. It has 76,000 miles Mobil 1 the whole way. Any options for Throttle body. AS & M looks real nice but very expensive and looks aren't everything.

 

What I designed the LE sytem around is:

1305-16 Comp Pro Mag Rocker Arms
7/16 ARP/ Comp studs (Pro Series or Hi Tech is what I run)
Isky Adjustable Guideplates (GM or Trickflow work well)
Pushrods are 4130 Chromoly 1 piece (Comp Magnum or Hi Tech)
Timing Chain, LT4 Xtreme Duty if you keep the stock WP or Pro Gear if you run a electric WP.

Pushrod Length should be measured but all the LE cams should run the same length pushrod on your motor from the LE2 cam up.

Bret

 

You will want to replace the exhaust valve springs at least.....for a double coil Crane ones 986-16 or LT4 springs....I strongly suggest this....The stock ones will be very near to coil bind!!! at high RPMs
Better replace the intake springs too, since you will modify the valvetrain, the sprins are a main part.

Regards
dochidalgo

 

No the LE2 heads come setup with much better springs than that ready to rock with the LE2 cam.

Bret