Longshot LCMS

iTrader: (1)

Just ordered some goodies from TSP, the rest I'll get from my old man (GM parts dealer). Let me know what you guys think.

Car is a full bolt-on 00' Z28 A4 w/ 3400 stall

TSP 233/239, 595"/.603", 112 LSA XE-R Lobes
PAC 1518 beehive springs (rated to .650")
TSP 7.4" Pushrods
GM LS6 oil pump (OEM non ported, non shimmed)
GM LS2 Timing chain
Timing Cover gasket
Timing cover seal
Water pump gasket
Harmonic Balancer bolt

I know something some might note is whether or not the oil pump will be adequate without being shimmed and ported. After reading a lot of threads I'm kinda convinced that the ported version really doesn't do anything. Thoughts?

jason00ss

iTrader: (2)

for some cheap insurance maybe some ls2 lifter trays and ls7 lifters, and not sure of the rest of your setup but maybe some larger injectors

Longshot LCMS

iTrader: (1)

Larger injectors for a cam only setup? I didnt think that was needed until heads...

383transam

iTrader: (1)

Are the ls7 lifters a drop in deal in a ls1 motor, do you have to change anything else and are they a upgrade over stock?

RedRocketZ28

iTrader: (19)

More than likely you will run out of injector with the stockers. I upgraded to the Ford Red Tops when I did my cam swap. How many miles are on the car? Might not be a bad idea to change the lifters. I left mine alone but the car only had 16k on it when the cam went in.

383transam, the LS7 lifters are a direct replacement.

SweetS10V8

iTrader: (4)

If your going to do lifters, might as well have heads ready at the same time. No reason to take off the stockers and replace headgaskets just to put back on the stockers.....

The oil pump should be just fine. A simple datalog while tuning will tell you if you need injectors or not.

1969mach1

a set of "CHEVROLET" valve covers and coil relocation kit

01ssreda4

iTrader: (96)

I would have a way to check installed height on those springs. They need to be installed 100% correctly. Also, SVO30s bc you WILL max your stock injectors out. Dont worry with lifters if you arent pulling your heads at this time.

Longshot LCMS

iTrader: (1)

Ok I'm not doing lifters, motor has 25k on it, really no need to. If I need injectors I'll add them once I've done some data logging.

I was thinking about the installed height, they should be more than enough for the lift. I understand doing it if I was using Crower 918s or something, but would it really be neccasary with this? Also, can someone direct me towards a how-to on how to check this?

SweetS10V8

iTrader: (4)

Quote:

Originally Posted by Longshot LCMS

I was thinking about the installed height, they should be more than enough for the lift. I understand doing it if I was using Crower 918s or something, but would it really be neccasary with this? Also, can someone direct me towards a how-to on how to check this?

Absolutley!!! Seting up springs correctly involves way more than "it wont coilbind" and there isnt one set installed height.

I run 918s, with .621" lift and still had to shim about .030" on each of them to get them right. Meaning my 918s would have taken .650 lift. They are rated to .625" on the new version. The old ones were .600".

Anyways the correct way to setup springs its to find coild bind on each spring, add your chosen "distance from coilbind" which is typically .060". Then add lift....for example....

1.100" individual spring measured coil bind height
0.060" distance from coilbind
0.600" lift
1.760" installed height, for that single spring.

Repeat for every spring. If you have duals, you have to measure the inner and outter spring, so theres twice as many.

It took me 4-5hrs to setup my springs, with my heads off and with all the tools avaliable!!

poltergeist 02

iTrader: (65)

i thought stock injectors are good to about 450hp-500hp

MUSTANGBRKR02

iTrader: (91)

Stock injectors max around 360 rwhp. Buy a set of 42's or 36's so you have some room to grow.

Longshot LCMS

iTrader: (1)

Very informative, thank you a million. You don't always see a ton of responses like this on Tech, mainly you just see jackasses bitching about the search feature, so thank you. I feel like I totally understand.

If my understanding is correct...
PAC says coil bind height is 1.080 so...

coil bind - 1.080
distance - 0.060 (this is self determined, the minimum you need, correct?)
lift - 0.603 (this is on my exhaust side, intake side is .593 or so... )
_______________
1.743 is my total... this means that all my springs should be at this height at the least, correct? Reccomended install height is 1.8" but so long as they measure at this height or taller, I should be in good shape?

Also, where can I purchase shims for this?

SweetS10V8

iTrader: (4)

No problem, I dont always post so much because I think no one really cares and its really just a waist of my time...

Anywho.. Yes that is correct for that single spring! ASSuming it really coilbinds at 1.080" You must measure each one individually. Coil bind is the hardest tolerance for a spring manufacturer to control. It varies from spring to spring more than any other tolerance.

I take each spring, measure its coilbind height with a spring checker. Then write the CB height on a small ziplock bag and bag it individually labeled, so I have all the info I need later.

Then remember available installed height changes on your head from valve to valve, and your shims come in .015" increments. So as you go through your setup you measure your installed height of an individual spring pocket and figure out which spring (CB+.060"+lift) will be exact or closest to a no shim, or .015/.030/.045/.060 shim making it perfect. Remembering that you have to know pay attention to if you on an intake or an exhaust valve all the time(if you have a split cam)

Longshot LCMS

iTrader: (1)

Could you explain exactly how you check a spring for coil bind?

SweetS10V8

iTrader: (4)

I just googled "spring checker" and happened to find more than a pic. This also has the tool needed to measure installed height....

http://www.cpgnation.com/forum/comp-...tech-2047.html

Longshot LCMS

iTrader: (1)

I actually was reading that page 5 minutes ago. Thanks! After a couple youtube vids and some google, and of course some help from yourself I feel pretty confidant.